diff --git a/CONTRIBUTING.mkdn b/CONTRIBUTING.mkdn
new file mode 100644
index 0000000..761c9db
--- /dev/null
+++ b/CONTRIBUTING.mkdn
@@ -0,0 +1,87 @@
+## HOW TO CONTRIBUTE
+
+Thank you for considering contributing to this distribution.  This file
+contains instructions that will help you work with the source code.
+
+The distribution is managed with Dist::Zilla.  This means than many of the
+usual files you might expect are not in the repository, but are generated at
+release time, as is much of the documentation.  Some generated files are
+kept in the repository as a convenience (e.g. Makefile.PL or cpanfile).
+
+Generally, **you do not need Dist::Zilla to contribute patches**.  You do need
+Dist::Zilla to create a tarball.  See below for guidance.
+
+### Getting dependencies
+
+If you have App::cpanminus 1.6 or later installed, you can use `cpanm` to
+satisfy dependencies like this:
+
+    $ cpanm --installdeps .
+
+Otherwise, look for either a `Makefile.PL` or `cpanfile` file for
+a list of dependencies to satisfy.
+
+### Running tests
+
+You can run tests directly using the `prove` tool:
+
+    $ prove -l
+    $ prove -lv t/some_test_file.t
+
+For most of my distributions, `prove` is entirely sufficient for you to test any
+patches you have. I use `prove` for 99% of my testing during development.
+
+### Code style and tidying
+
+Please try to match any existing coding style.  If there is a `.perltidyrc`
+file, please install Perl::Tidy and use perltidy before submitting patches.
+
+If there is a `tidyall.ini` file, you can also install Code::TidyAll and run
+`tidyall` on a file or `tidyall -a` to tidy all files.
+
+### Patching documentation
+
+Much of the documentation Pod is generated at release time.  Some is
+generated boilerplate; other documentation is built from pseudo-POD
+directives in the source like C<=method> or C<=func>.
+
+If you would like to submit a documentation edit, please limit yourself to
+the documentation you see.
+
+If you see typos or documentation issues in the generated docs, please
+email or open a bug ticket instead of patching.
+
+### Installing and using Dist::Zilla
+
+Dist::Zilla is a very powerful authoring tool, optimized for maintaining a
+large number of distributions with a high degree of automation, but it has a
+large dependency chain, a bit of a learning curve and requires a number of
+author-specific plugins.
+
+To install it from CPAN, I recommend one of the following approaches for
+the quickest installation:
+
+    # using CPAN.pm, but bypassing non-functional pod tests
+    $ cpan TAP::Harness::Restricted
+    $ PERL_MM_USE_DEFAULT=1 HARNESS_CLASS=TAP::Harness::Restricted cpan Dist::Zilla
+
+    # using cpanm, bypassing *all* tests
+    $ cpanm -n Dist::Zilla
+
+In either case, it's probably going to take about 10 minutes.  Go for a walk,
+go get a cup of your favorite beverage, take a bathroom break, or whatever.
+When you get back, Dist::Zilla should be ready for you.
+
+Then you need to install any plugins specific to this distribution:
+
+    $ cpan `dzil authordeps`
+    $ dzil authordeps | cpanm
+
+Once installed, here are some dzil commands you might try:
+
+    $ dzil build
+    $ dzil test
+    $ dzil xtest
+
+You can learn more about Dist::Zilla at http://dzil.org/
+
diff --git a/Changes b/Changes
new file mode 100644
index 0000000..75154d6
--- /dev/null
+++ b/Changes
@@ -0,0 +1,156 @@
+Revision history for CPAN-Meta-Requirements
+
+2.140     2015-12-12 16:17:15-05:00 America/New_York
+
+    - no changes from 2.139
+
+2.139     2015-12-11 12:42:44-05:00 America/New_York (TRIAL RELEASE)
+
+    - expanded dist.ini from author bundle to individual plugins
+
+2.138     2015-07-13 22:32:37-04:00 America/New_York (TRIAL RELEASE)
+
+    - repackage with fixed tests
+
+2.137     2015-07-09 09:53:32-04:00 America/New_York (TRIAL RELEASE)
+
+    - much better error messages, explaining what conflicted and how
+
+2.136     2015-06-08 21:35:27-06:00 America/Denver (TRIAL RELEASE)
+
+    [FIXED]
+
+    - On Perls before 5.8.1, pad 1-part and 2-part literal v-strings
+      to avoid old version.pm bugs with v-strings less than 3 characters
+
+    - Protect internal _isa_version from non-refs that pass
+      ->isa('version')
+
+2.135     2015-05-19 13:15:35-04:00 America/New_York (TRIAL RELEASE)
+
+    [TESTING]
+
+    - Skips impossible tests on Perls earlier than 5.8.0 (before
+      v-string magic).
+
+2.134     2015-04-18 13:20:56+02:00 Europe/Berlin (TRIAL RELEASE)
+
+    [ADDED]
+
+    - Added method for getting structured requirements
+
+2.133     2015-02-22 06:35:34-05:00 America/New_York
+
+    [FIXED]
+
+    - In fixing preservation of "0.00", some Module => 0 optimizations were
+      lost; this restores those optimizations
+
+2.132     2015-01-22 17:09:19-05:00 America/New_York
+
+    [FIXED]
+
+    - Precision of version requirement "0.00" is preserved when merging
+      requirements.
+
+2.131     2014-12-23 15:04:19-05:00 America/New_York
+
+    [ENHANCEMENTS]
+
+    - Merging Module => 0 into requirements is now optimized
+
+    [PREREQS]
+
+    - Scalar::Utils removed as a prerequisite
+
+2.130     2014-11-19 23:25:46-05:00 America/New_York
+
+    [ADDED]
+
+    - from_string_hash can take optional constructor arguments
+
+    [CHANGED]
+
+    - bad_version_hook callback gets module name as well as version string
+
+    - undefined/empty versions given to from_string_hash or
+      add_string_requirement now carp and are coerced to "0" instead of
+      being fatal.  This is more consistent with how the other requirement
+      functions work.
+
+2.129     2014-11-13 16:28:45-05:00 America/New_York
+
+    [FIXED]
+
+    - from_string_hash can now accept v-strings as hash values
+
+2.128     2014-09-06 00:04:22-04:00 America/New_York
+
+    [FIXED]
+
+    - Throws an error at compile time if neither version nor
+      the ExtUtils::MakeMaker bootstrap are available
+
+2.127     2014-09-04 22:17:44-04:00 America/New_York
+
+    [FIXED]
+
+    - Works around limitations in version::vpp detecting v-string magic
+
+    [PREREQS]
+
+    - Requires version.pm 0.88 in metadata, but code should work with any
+      version of version.pm
+
+    - Adds support for forthcoming ExtUtils::MakeMaker bootstrap version.pm
+      for Perls older than 5.10.0
+
+2.126     2014-07-30 16:26:29-04:00 America/New_York
+
+    [FIXED]
+
+    - Fixed compatibility with version.pm 0.77
+
+    [DOCUMENTED]
+
+    - Minor documentation fixes
+
+    [CHANGED]
+
+    - Modernized distribution meta files
+
+2.125     2013-09-23 14:51:14 America/New_York
+
+    [FIXED]
+
+    - updated Makefile.PL logic to support PERL_NO_HIGHLANDER
+
+2.124     2013-09-23 06:40:07 America/New_York
+
+    [FIXED]
+
+    - Better fix than 2.123.  On old perls, rather than install into
+      'core', we continue to install into the proper 'site' library,
+      but force UNINST=1 when necessary to remove stale copies
+      from ExtUtils::MakeMaker
+
+2.123     2013-08-30 12:17:14 America/New_York
+
+    [FIXED]
+
+    - On Perls prior to v5.12, CPAN::Meta::Requirements will be installed
+      into the 'core' library path to avoid an older version bundled with
+      ExtUtils::MakeMaker and installed there taking precedence.
+
+2.122     2012-05-02 17:29:17 America/New_York
+
+    [FIXED]
+
+    - Fix typo in documentation: the exclusion symbol is "!=" rather than
+      just "!". The implemenation was correct, just the docs were wrong.
+      [rt.cpan.org #76948; ticket and patch from hasch-cpan@cozap.com]
+
+2.121     2012-04-01 15:05:15 Europe/Paris
+
+    - Split out from CPAN::Meta into own distribution
+
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..2e750f8
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,379 @@
+This software is copyright (c) 2010 by David Golden and Ricardo Signes.
+
+This is free software; you can redistribute it and/or modify it under
+the same terms as the Perl 5 programming language system itself.
+
+Terms of the Perl programming language system itself
+
+a) the GNU General Public License as published by the Free
+   Software Foundation; either version 1, or (at your option) any
+   later version, or
+b) the "Artistic License"
+
+--- The GNU General Public License, Version 1, February 1989 ---
+
+This software is Copyright (c) 2010 by David Golden and Ricardo Signes.
+
+This is free software, licensed under:
+
+  The GNU General Public License, Version 1, February 1989
+
+                    GNU GENERAL PUBLIC LICENSE
+                     Version 1, February 1989
+
+ Copyright (C) 1989 Free Software Foundation, Inc.
+ 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The license agreements of most software companies try to keep users
+at the mercy of those companies.  By contrast, our General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  The
+General Public License applies to the Free Software Foundation's
+software and to any other program whose authors commit to using it.
+You can use it for your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Specifically, the General Public License is designed to make
+sure that you have the freedom to give away or sell copies of free
+software, that you receive source code or can get it if you want it,
+that you can change the software or use pieces of it in new free
+programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of a such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must tell them their rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any program or other work which
+contains a notice placed by the copyright holder saying it may be
+distributed under the terms of this General Public License.  The
+"Program", below, refers to any such program or work, and a "work based
+on the Program" means either the Program or any work containing the
+Program or a portion of it, either verbatim or with modifications.  Each
+licensee is addressed as "you".
+
+  1. You may copy and distribute verbatim copies of the Program's source
+code as you receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice and
+disclaimer of warranty; keep intact all the notices that refer to this
+General Public License and to the absence of any warranty; and give any
+other recipients of the Program a copy of this General Public License
+along with the Program.  You may charge a fee for the physical act of
+transferring a copy.
+
+  2. You may modify your copy or copies of the Program or any portion of
+it, and copy and distribute such modifications under the terms of Paragraph
+1 above, provided that you also do the following:
+
+    a) cause the modified files to carry prominent notices stating that
+    you changed the files and the date of any change; and
+
+    b) cause the whole of any work that you distribute or publish, that
+    in whole or in part contains the Program or any part thereof, either
+    with or without modifications, to be licensed at no charge to all
+    third parties under the terms of this General Public License (except
+    that you may choose to grant warranty protection to some or all
+    third parties, at your option).
+
+    c) If the modified program normally reads commands interactively when
+    run, you must cause it, when started running for such interactive use
+    in the simplest and most usual way, to print or display an
+    announcement including an appropriate copyright notice and a notice
+    that there is no warranty (or else, saying that you provide a
+    warranty) and that users may redistribute the program under these
+    conditions, and telling the user how to view a copy of this General
+    Public License.
+
+    d) You may charge a fee for the physical act of transferring a
+    copy, and you may at your option offer warranty protection in
+    exchange for a fee.
+
+Mere aggregation of another independent work with the Program (or its
+derivative) on a volume of a storage or distribution medium does not bring
+the other work under the scope of these terms.
+
+  3. You may copy and distribute the Program (or a portion or derivative of
+it, under Paragraph 2) in object code or executable form under the terms of
+Paragraphs 1 and 2 above provided that you also do one of the following:
+
+    a) accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of
+    Paragraphs 1 and 2 above; or,
+
+    b) accompany it with a written offer, valid for at least three
+    years, to give any third party free (except for a nominal charge
+    for the cost of distribution) a complete machine-readable copy of the
+    corresponding source code, to be distributed under the terms of
+    Paragraphs 1 and 2 above; or,
+
+    c) accompany it with the information you received as to where the
+    corresponding source code may be obtained.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form alone.)
+
+Source code for a work means the preferred form of the work for making
+modifications to it.  For an executable file, complete source code means
+all the source code for all modules it contains; but, as a special
+exception, it need not include source code for modules which are standard
+libraries that accompany the operating system on which the executable
+file runs, or for standard header files or definitions files that
+accompany that operating system.
+
+  4. You may not copy, modify, sublicense, distribute or transfer the
+Program except as expressly provided under this General Public License.
+Any attempt otherwise to copy, modify, sublicense, distribute or transfer
+the Program is void, and will automatically terminate your rights to use
+the Program under this License.  However, parties who have received
+copies, or rights to use copies, from you under this General Public
+License will not have their licenses terminated so long as such parties
+remain in full compliance.
+
+  5. By copying, distributing or modifying the Program (or any work based
+on the Program) you indicate your acceptance of this license to do so,
+and all its terms and conditions.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the original
+licensor to copy, distribute or modify the Program subject to these
+terms and conditions.  You may not impose any further restrictions on the
+recipients' exercise of the rights granted herein.
+
+  7. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of the license which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+the license, you may choose any version ever published by the Free Software
+Foundation.
+
+  8. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  9. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  10. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+        Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to humanity, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+  To do so, attach the following notices to the program.  It is safest to
+attach them to the start of each source file to most effectively convey
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 1, or (at your option)
+    any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19xx name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the
+appropriate parts of the General Public License.  Of course, the
+commands you use may be called something other than `show w' and `show
+c'; they could even be mouse-clicks or menu items--whatever suits your
+program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  program `Gnomovision' (a program to direct compilers to make passes
+  at assemblers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+That's all there is to it!
+
+
+--- The Artistic License 1.0 ---
+
+This software is Copyright (c) 2010 by David Golden and Ricardo Signes.
+
+This is free software, licensed under:
+
+  The Artistic License 1.0
+
+The Artistic License
+
+Preamble
+
+The intent of this document is to state the conditions under which a Package
+may be copied, such that the Copyright Holder maintains some semblance of
+artistic control over the development of the package, while giving the users of
+the package the right to use and distribute the Package in a more-or-less
+customary fashion, plus the right to make reasonable modifications.
+
+Definitions:
+
+  - "Package" refers to the collection of files distributed by the Copyright
+    Holder, and derivatives of that collection of files created through
+    textual modification. 
+  - "Standard Version" refers to such a Package if it has not been modified,
+    or has been modified in accordance with the wishes of the Copyright
+    Holder. 
+  - "Copyright Holder" is whoever is named in the copyright or copyrights for
+    the package. 
+  - "You" is you, if you're thinking about copying or distributing this Package.
+  - "Reasonable copying fee" is whatever you can justify on the basis of media
+    cost, duplication charges, time of people involved, and so on. (You will
+    not be required to justify it to the Copyright Holder, but only to the
+    computing community at large as a market that must bear the fee.) 
+  - "Freely Available" means that no fee is charged for the item itself, though
+    there may be fees involved in handling the item. It also means that
+    recipients of the item may redistribute it under the same conditions they
+    received it. 
+
+1. You may make and give away verbatim copies of the source form of the
+Standard Version of this Package without restriction, provided that you
+duplicate all of the original copyright notices and associated disclaimers.
+
+2. You may apply bug fixes, portability fixes and other modifications derived
+from the Public Domain or from the Copyright Holder. A Package modified in such
+a way shall still be considered the Standard Version.
+
+3. You may otherwise modify your copy of this Package in any way, provided that
+you insert a prominent notice in each changed file stating how and when you
+changed that file, and provided that you do at least ONE of the following:
+
+  a) place your modifications in the Public Domain or otherwise make them
+     Freely Available, such as by posting said modifications to Usenet or an
+     equivalent medium, or placing the modifications on a major archive site
+     such as ftp.uu.net, or by allowing the Copyright Holder to include your
+     modifications in the Standard Version of the Package.
+
+  b) use the modified Package only within your corporation or organization.
+
+  c) rename any non-standard executables so the names do not conflict with
+     standard executables, which must also be provided, and provide a separate
+     manual page for each non-standard executable that clearly documents how it
+     differs from the Standard Version.
+
+  d) make other distribution arrangements with the Copyright Holder.
+
+4. You may distribute the programs of this Package in object code or executable
+form, provided that you do at least ONE of the following:
+
+  a) distribute a Standard Version of the executables and library files,
+     together with instructions (in the manual page or equivalent) on where to
+     get the Standard Version.
+
+  b) accompany the distribution with the machine-readable source of the Package
+     with your modifications.
+
+  c) accompany any non-standard executables with their corresponding Standard
+     Version executables, giving the non-standard executables non-standard
+     names, and clearly documenting the differences in manual pages (or
+     equivalent), together with instructions on where to get the Standard
+     Version.
+
+  d) make other distribution arrangements with the Copyright Holder.
+
+5. You may charge a reasonable copying fee for any distribution of this
+Package.  You may charge any fee you choose for support of this Package. You
+may not charge a fee for this Package itself. However, you may distribute this
+Package in aggregate with other (possibly commercial) programs as part of a
+larger (possibly commercial) software distribution provided that you do not
+advertise this Package as a product of your own.
+
+6. The scripts and library files supplied as input to or produced as output
+from the programs of this Package do not automatically fall under the copyright
+of this Package, but belong to whomever generated them, and may be sold
+commercially, and may be aggregated with this Package.
+
+7. C or perl subroutines supplied by you and linked into this Package shall not
+be considered part of this Package.
+
+8. The name of the Copyright Holder may not be used to endorse or promote
+products derived from this software without specific prior written permission.
+
+9. THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
+WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+The End
+
diff --git a/MANIFEST b/MANIFEST
new file mode 100644
index 0000000..f93d434
--- /dev/null
+++ b/MANIFEST
@@ -0,0 +1,32 @@
+# This file was automatically generated by Dist::Zilla::Plugin::Manifest v5.042.
+CONTRIBUTING.mkdn
+Changes
+LICENSE
+MANIFEST
+META.json
+META.yml
+Makefile.PL
+README
+cpanfile
+dist.ini
+lib/CPAN/Meta/Requirements.pm
+perlcritic.rc
+t/00-report-prereqs.dd
+t/00-report-prereqs.t
+t/accepts.t
+t/bad_version_hook.t
+t/basic.t
+t/finalize.t
+t/from-hash.t
+t/merge.t
+t/strings.t
+t/version-cleanup.t
+xt/author/00-compile.t
+xt/author/critic.t
+xt/author/pod-coverage.t
+xt/author/pod-spell.t
+xt/author/pod-syntax.t
+xt/author/test-version.t
+xt/release/distmeta.t
+xt/release/minimum-version.t
+xt/release/portability.t
diff --git a/META.json b/META.json
new file mode 100644
index 0000000..3f73609
--- /dev/null
+++ b/META.json
@@ -0,0 +1,157 @@
+{
+   "abstract" : "a set of version requirements for a CPAN dist",
+   "author" : [
+      "David Golden <dagolden@cpan.org>",
+      "Ricardo Signes <rjbs@cpan.org>"
+   ],
+   "dynamic_config" : 0,
+   "generated_by" : "Dist::Zilla version 5.042, CPAN::Meta::Converter version 2.150001",
+   "license" : [
+      "perl_5"
+   ],
+   "meta-spec" : {
+      "url" : "http://search.cpan.org/perldoc?CPAN::Meta::Spec",
+      "version" : 2
+   },
+   "name" : "CPAN-Meta-Requirements",
+   "no_index" : {
+      "directory" : [
+         "corpus",
+         "examples",
+         "t",
+         "xt"
+      ],
+      "package" : [
+         "DB"
+      ]
+   },
+   "prereqs" : {
+      "configure" : {
+         "requires" : {
+            "ExtUtils::MakeMaker" : "6.17",
+            "perl" : "5.006"
+         }
+      },
+      "develop" : {
+         "requires" : {
+            "Dist::Zilla" : "5",
+            "Dist::Zilla::Plugin::Authority" : "0",
+            "Dist::Zilla::Plugin::AutoPrereqs" : "0",
+            "Dist::Zilla::Plugin::BumpVersionAfterRelease" : "0",
+            "Dist::Zilla::Plugin::CPANFile" : "0",
+            "Dist::Zilla::Plugin::CheckChangesHasContent" : "0",
+            "Dist::Zilla::Plugin::CheckMetaResources" : "0",
+            "Dist::Zilla::Plugin::CheckPrereqsIndexed" : "0",
+            "Dist::Zilla::Plugin::ConfirmRelease" : "0",
+            "Dist::Zilla::Plugin::CopyFilesFromBuild::Filtered" : "0",
+            "Dist::Zilla::Plugin::ExecDir" : "0",
+            "Dist::Zilla::Plugin::Git::Check" : "0",
+            "Dist::Zilla::Plugin::Git::CheckFor::CorrectBranch" : "0",
+            "Dist::Zilla::Plugin::Git::Commit" : "0",
+            "Dist::Zilla::Plugin::Git::Contributors" : "0",
+            "Dist::Zilla::Plugin::Git::GatherDir" : "0",
+            "Dist::Zilla::Plugin::Git::Push" : "0",
+            "Dist::Zilla::Plugin::Git::Tag" : "0",
+            "Dist::Zilla::Plugin::GithubMeta" : "0",
+            "Dist::Zilla::Plugin::InsertCopyright" : "0",
+            "Dist::Zilla::Plugin::License" : "0",
+            "Dist::Zilla::Plugin::MakeMaker" : "0",
+            "Dist::Zilla::Plugin::MakeMaker::Highlander" : "0.003",
+            "Dist::Zilla::Plugin::Manifest" : "0",
+            "Dist::Zilla::Plugin::ManifestSkip" : "0",
+            "Dist::Zilla::Plugin::MetaJSON" : "0",
+            "Dist::Zilla::Plugin::MetaNoIndex" : "0",
+            "Dist::Zilla::Plugin::MetaProvides::Package" : "0",
+            "Dist::Zilla::Plugin::MetaTests" : "0",
+            "Dist::Zilla::Plugin::MetaYAML" : "0",
+            "Dist::Zilla::Plugin::MinimumPerl" : "0",
+            "Dist::Zilla::Plugin::NextRelease" : "0",
+            "Dist::Zilla::Plugin::OnlyCorePrereqs" : "0.014",
+            "Dist::Zilla::Plugin::Pod2Readme" : "0",
+            "Dist::Zilla::Plugin::PodCoverageTests" : "0",
+            "Dist::Zilla::Plugin::PodSyntaxTests" : "0",
+            "Dist::Zilla::Plugin::Prereqs" : "0",
+            "Dist::Zilla::Plugin::Prereqs::AuthorDeps" : "0",
+            "Dist::Zilla::Plugin::PromptIfStale" : "0",
+            "Dist::Zilla::Plugin::PruneCruft" : "0",
+            "Dist::Zilla::Plugin::RewriteVersion" : "0",
+            "Dist::Zilla::Plugin::RunExtraTests" : "0",
+            "Dist::Zilla::Plugin::ShareDir" : "0",
+            "Dist::Zilla::Plugin::SurgicalPodWeaver" : "0",
+            "Dist::Zilla::Plugin::Test::Compile" : "0",
+            "Dist::Zilla::Plugin::Test::MinimumVersion" : "0",
+            "Dist::Zilla::Plugin::Test::Perl::Critic" : "0",
+            "Dist::Zilla::Plugin::Test::PodSpelling" : "0",
+            "Dist::Zilla::Plugin::Test::Portability" : "0",
+            "Dist::Zilla::Plugin::Test::ReportPrereqs" : "0",
+            "Dist::Zilla::Plugin::Test::Version" : "0",
+            "Dist::Zilla::Plugin::TestRelease" : "0",
+            "Dist::Zilla::Plugin::UploadToCPAN" : "0",
+            "English" : "0",
+            "File::Spec" : "0",
+            "File::Temp" : "0",
+            "IO::Handle" : "0",
+            "IPC::Open3" : "0",
+            "Pod::Coverage::TrustPod" : "0",
+            "Pod::Wordlist" : "0",
+            "Software::License::Perl_5" : "0",
+            "Test::CPAN::Meta" : "0",
+            "Test::More" : "0",
+            "Test::Pod" : "1.41",
+            "Test::Pod::Coverage" : "1.08",
+            "Test::Spelling" : "0.12",
+            "Test::Version" : "1",
+            "blib" : "1.01"
+         }
+      },
+      "runtime" : {
+         "requires" : {
+            "B" : "0",
+            "Carp" : "0",
+            "perl" : "5.006",
+            "strict" : "0",
+            "version" : "0.88",
+            "warnings" : "0"
+         }
+      },
+      "test" : {
+         "recommends" : {
+            "CPAN::Meta" : "2.120900"
+         },
+         "requires" : {
+            "ExtUtils::MakeMaker" : "0",
+            "File::Spec" : "0",
+            "Test::More" : "0.88",
+            "perl" : "5.006",
+            "version" : "0.88"
+         }
+      }
+   },
+   "provides" : {
+      "CPAN::Meta::Requirements" : {
+         "file" : "lib/CPAN/Meta/Requirements.pm",
+         "version" : "2.140"
+      }
+   },
+   "release_status" : "stable",
+   "resources" : {
+      "bugtracker" : {
+         "web" : "https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements/issues"
+      },
+      "homepage" : "https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements",
+      "repository" : {
+         "type" : "git",
+         "url" : "https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements.git",
+         "web" : "https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements"
+      }
+   },
+   "version" : "2.140",
+   "x_authority" : "cpan:DAGOLDEN",
+   "x_contributors" : [
+      "Ed J <mohawk2@users.noreply.github.com>",
+      "Karen Etheridge <ether@cpan.org>",
+      "Leon Timmermans <fawaka@gmail.com>",
+      "robario <webmaster@robario.com>"
+   ]
+}
+
diff --git a/META.yml b/META.yml
new file mode 100644
index 0000000..1844883
--- /dev/null
+++ b/META.yml
@@ -0,0 +1,51 @@
+---
+abstract: 'a set of version requirements for a CPAN dist'
+author:
+  - 'David Golden <dagolden@cpan.org>'
+  - 'Ricardo Signes <rjbs@cpan.org>'
+build_requires:
+  ExtUtils::MakeMaker: '0'
+  File::Spec: '0'
+  Test::More: '0.88'
+  perl: '5.006'
+  version: '0.88'
+configure_requires:
+  ExtUtils::MakeMaker: '6.17'
+  perl: '5.006'
+dynamic_config: 0
+generated_by: 'Dist::Zilla version 5.042, CPAN::Meta::Converter version 2.150001'
+license: perl
+meta-spec:
+  url: http://module-build.sourceforge.net/META-spec-v1.4.html
+  version: '1.4'
+name: CPAN-Meta-Requirements
+no_index:
+  directory:
+    - corpus
+    - examples
+    - t
+    - xt
+  package:
+    - DB
+provides:
+  CPAN::Meta::Requirements:
+    file: lib/CPAN/Meta/Requirements.pm
+    version: '2.140'
+requires:
+  B: '0'
+  Carp: '0'
+  perl: '5.006'
+  strict: '0'
+  version: '0.88'
+  warnings: '0'
+resources:
+  bugtracker: https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements/issues
+  homepage: https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements
+  repository: https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements.git
+version: '2.140'
+x_authority: cpan:DAGOLDEN
+x_contributors:
+  - 'Ed J <mohawk2@users.noreply.github.com>'
+  - 'Karen Etheridge <ether@cpan.org>'
+  - 'Leon Timmermans <fawaka@gmail.com>'
+  - 'robario <webmaster@robario.com>'
diff --git a/Makefile.PL b/Makefile.PL
new file mode 100644
index 0000000..56503f4
--- /dev/null
+++ b/Makefile.PL
@@ -0,0 +1,69 @@
+# This file was automatically generated by Dist::Zilla::Plugin::MakeMaker v5.042.
+use strict;
+use warnings;
+
+use 5.006;
+
+use ExtUtils::MakeMaker 6.17;
+
+my %WriteMakefileArgs = (
+  "ABSTRACT" => "a set of version requirements for a CPAN dist",
+  "AUTHOR" => "David Golden <dagolden\@cpan.org>, Ricardo Signes <rjbs\@cpan.org>",
+  "CONFIGURE_REQUIRES" => {
+    "ExtUtils::MakeMaker" => "6.17"
+  },
+  "DISTNAME" => "CPAN-Meta-Requirements",
+  "LICENSE" => "perl",
+  "MIN_PERL_VERSION" => "5.006",
+  "NAME" => "CPAN::Meta::Requirements",
+  "PREREQ_PM" => {
+    "B" => 0,
+    "Carp" => 0,
+    "strict" => 0,
+    "version" => "0.88",
+    "warnings" => 0
+  },
+  "TEST_REQUIRES" => {
+    "ExtUtils::MakeMaker" => 0,
+    "File::Spec" => 0,
+    "Test::More" => "0.88",
+    "version" => "0.88"
+  },
+  "VERSION" => "2.140",
+  "test" => {
+    "TESTS" => "t/*.t"
+  }
+);
+
+
+my %FallbackPrereqs = (
+  "B" => 0,
+  "Carp" => 0,
+  "ExtUtils::MakeMaker" => 0,
+  "File::Spec" => 0,
+  "Test::More" => "0.88",
+  "strict" => 0,
+  "version" => "0.88",
+  "warnings" => 0
+);
+
+
+unless ( eval { ExtUtils::MakeMaker->VERSION(6.63_03) } ) {
+  delete $WriteMakefileArgs{TEST_REQUIRES};
+  delete $WriteMakefileArgs{BUILD_REQUIRES};
+  $WriteMakefileArgs{PREREQ_PM} = \%FallbackPrereqs;
+}
+
+delete $WriteMakefileArgs{CONFIGURE_REQUIRES}
+  unless eval { ExtUtils::MakeMaker->VERSION(6.52) };
+
+# Added by Dist::Zilla::Plugin::MakeMaker::Highlander
+if ( $] < 5.012
+  && ! $ENV{PERL_NO_HIGHLANDER}
+  && ! ( $ENV{PERL_MM_OPT} && $ENV{PERL_MM_OPT} =~ /(?:INSTALL_BASE|PREFIX)/ )
+  && ! grep { /INSTALL_BASE/ || /PREFIX/ } @ARGV
+) {
+    $WriteMakefileArgs{UNINST} = 1;
+}
+
+WriteMakefile(%WriteMakefileArgs);
diff --git a/README b/README
new file mode 100644
index 0000000..06dc5d4
--- /dev/null
+++ b/README
@@ -0,0 +1,260 @@
+NAME
+    CPAN::Meta::Requirements - a set of version requirements for a CPAN dist
+
+VERSION
+    version 2.140
+
+SYNOPSIS
+      use CPAN::Meta::Requirements;
+
+      my $build_requires = CPAN::Meta::Requirements->new;
+
+      $build_requires->add_minimum('Library::Foo' => 1.208);
+
+      $build_requires->add_minimum('Library::Foo' => 2.602);
+
+      $build_requires->add_minimum('Module::Bar'  => 'v1.2.3');
+
+      $METAyml->{build_requires} = $build_requires->as_string_hash;
+
+DESCRIPTION
+    A CPAN::Meta::Requirements object models a set of version constraints
+    like those specified in the META.yml or META.json files in CPAN
+    distributions, and as defined by CPAN::Meta::Spec; It can be built up by
+    adding more and more constraints, and it will reduce them to the
+    simplest representation.
+
+    Logically impossible constraints will be identified immediately by
+    thrown exceptions.
+
+METHODS
+  new
+      my $req = CPAN::Meta::Requirements->new;
+
+    This returns a new CPAN::Meta::Requirements object. It takes an optional
+    hash reference argument. Currently, only one key is supported:
+
+    *   "bad_version_hook" -- if provided, when a version cannot be parsed
+        into a version object, this code reference will be called with the
+        invalid version string as first argument, and the module name as
+        second argument. It must return a valid version object.
+
+    All other keys are ignored.
+
+  add_minimum
+      $req->add_minimum( $module => $version );
+
+    This adds a new minimum version requirement. If the new requirement is
+    redundant to the existing specification, this has no effect.
+
+    Minimum requirements are inclusive. $version is required, along with any
+    greater version number.
+
+    This method returns the requirements object.
+
+  add_maximum
+      $req->add_maximum( $module => $version );
+
+    This adds a new maximum version requirement. If the new requirement is
+    redundant to the existing specification, this has no effect.
+
+    Maximum requirements are inclusive. No version strictly greater than the
+    given version is allowed.
+
+    This method returns the requirements object.
+
+  add_exclusion
+      $req->add_exclusion( $module => $version );
+
+    This adds a new excluded version. For example, you might use these three
+    method calls:
+
+      $req->add_minimum( $module => '1.00' );
+      $req->add_maximum( $module => '1.82' );
+
+      $req->add_exclusion( $module => '1.75' );
+
+    Any version between 1.00 and 1.82 inclusive would be acceptable, except
+    for 1.75.
+
+    This method returns the requirements object.
+
+  exact_version
+      $req->exact_version( $module => $version );
+
+    This sets the version required for the given module to *exactly* the
+    given version. No other version would be considered acceptable.
+
+    This method returns the requirements object.
+
+  add_requirements
+      $req->add_requirements( $another_req_object );
+
+    This method adds all the requirements in the given
+    CPAN::Meta::Requirements object to the requirements object on which it
+    was called. If there are any conflicts, an exception is thrown.
+
+    This method returns the requirements object.
+
+  accepts_module
+      my $bool = $req->accepts_module($module => $version);
+
+    Given an module and version, this method returns true if the version
+    specification for the module accepts the provided version. In other
+    words, given:
+
+      Module => '>= 1.00, < 2.00'
+
+    We will accept 1.00 and 1.75 but not 0.50 or 2.00.
+
+    For modules that do not appear in the requirements, this method will
+    return true.
+
+  clear_requirement
+      $req->clear_requirement( $module );
+
+    This removes the requirement for a given module from the object.
+
+    This method returns the requirements object.
+
+  requirements_for_module
+      $req->requirements_for_module( $module );
+
+    This returns a string containing the version requirements for a given
+    module in the format described in CPAN::Meta::Spec or undef if the given
+    module has no requirements. This should only be used for informational
+    purposes such as error messages and should not be interpreted or used
+    for comparison (see "accepts_module" instead).
+
+  structured_requirements_for_module
+      $req->structured_requirements_for_module( $module );
+
+    This returns a data structure containing the version requirements for a
+    given module or undef if the given module has no requirements. This
+    should not be used for version checks (see "accepts_module" instead).
+
+    Added in version 2.134.
+
+  required_modules
+    This method returns a list of all the modules for which requirements
+    have been specified.
+
+  clone
+      $req->clone;
+
+    This method returns a clone of the invocant. The clone and the original
+    object can then be changed independent of one another.
+
+  is_simple
+    This method returns true if and only if all requirements are inclusive
+    minimums -- that is, if their string expression is just the version
+    number.
+
+  is_finalized
+    This method returns true if the requirements have been finalized by
+    having the "finalize" method called on them.
+
+  finalize
+    This method marks the requirements finalized. Subsequent attempts to
+    change the requirements will be fatal, *if* they would result in a
+    change. If they would not alter the requirements, they have no effect.
+
+    If a finalized set of requirements is cloned, the cloned requirements
+    are not also finalized.
+
+  as_string_hash
+    This returns a reference to a hash describing the requirements using the
+    strings in the CPAN::Meta::Spec specification.
+
+    For example after the following program:
+
+      my $req = CPAN::Meta::Requirements->new;
+
+      $req->add_minimum('CPAN::Meta::Requirements' => 0.102);
+
+      $req->add_minimum('Library::Foo' => 1.208);
+
+      $req->add_maximum('Library::Foo' => 2.602);
+
+      $req->add_minimum('Module::Bar'  => 'v1.2.3');
+
+      $req->add_exclusion('Module::Bar'  => 'v1.2.8');
+
+      $req->exact_version('Xyzzy'  => '6.01');
+
+      my $hashref = $req->as_string_hash;
+
+    $hashref would contain:
+
+      {
+        'CPAN::Meta::Requirements' => '0.102',
+        'Library::Foo' => '>= 1.208, <= 2.206',
+        'Module::Bar'  => '>= v1.2.3, != v1.2.8',
+        'Xyzzy'        => '== 6.01',
+      }
+
+  add_string_requirement
+      $req->add_string_requirement('Library::Foo' => '>= 1.208, <= 2.206');
+      $req->add_string_requirement('Library::Foo' => v1.208);
+
+    This method parses the passed in string and adds the appropriate
+    requirement for the given module. A version can be a Perl "v-string". It
+    understands version ranges as described in the "Version Ranges" in
+    CPAN::Meta::Spec. For example:
+
+    1.3
+    >= 1.3
+    <= 1.3
+    == 1.3
+    != 1.3
+    > 1.3
+    < 1.3
+    >= 1.3, != 1.5, <= 2.0
+        A version number without an operator is equivalent to specifying a
+        minimum (">="). Extra whitespace is allowed.
+
+  from_string_hash
+      my $req = CPAN::Meta::Requirements->from_string_hash( \%hash );
+      my $req = CPAN::Meta::Requirements->from_string_hash( \%hash, \%opts );
+
+    This is an alternate constructor for a CPAN::Meta::Requirements object.
+    It takes a hash of module names and version requirement strings and
+    returns a new CPAN::Meta::Requirements object. As with
+    add_string_requirement, a version can be a Perl "v-string". Optionally,
+    you can supply a hash-reference of options, exactly as with the "new"
+    method.
+
+SUPPORT
+  Bugs / Feature Requests
+    Please report any bugs or feature requests through the issue tracker at
+    <https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements/issues>.
+    You will be notified automatically of any progress on your issue.
+
+  Source Code
+    This is open source software. The code repository is available for
+    public review and contribution under the terms of the license.
+
+    <https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements>
+
+      git clone https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements.git
+
+AUTHORS
+    *   David Golden <dagolden@cpan.org>
+
+    *   Ricardo Signes <rjbs@cpan.org>
+
+CONTRIBUTORS
+    *   Ed J <mohawk2@users.noreply.github.com>
+
+    *   Karen Etheridge <ether@cpan.org>
+
+    *   Leon Timmermans <fawaka@gmail.com>
+
+    *   robario <webmaster@robario.com>
+
+COPYRIGHT AND LICENSE
+    This software is copyright (c) 2010 by David Golden and Ricardo Signes.
+
+    This is free software; you can redistribute it and/or modify it under
+    the same terms as the Perl 5 programming language system itself.
+
diff --git a/cpanfile b/cpanfile
new file mode 100644
index 0000000..7382453
--- /dev/null
+++ b/cpanfile
@@ -0,0 +1,94 @@
+requires "B" => "0";
+requires "Carp" => "0";
+requires "perl" => "5.006";
+requires "strict" => "0";
+requires "version" => "0.88";
+requires "warnings" => "0";
+
+on 'test' => sub {
+  requires "ExtUtils::MakeMaker" => "0";
+  requires "File::Spec" => "0";
+  requires "Test::More" => "0.88";
+  requires "perl" => "5.006";
+  requires "version" => "0.88";
+};
+
+on 'test' => sub {
+  recommends "CPAN::Meta" => "2.120900";
+};
+
+on 'configure' => sub {
+  requires "ExtUtils::MakeMaker" => "6.17";
+  requires "perl" => "5.006";
+};
+
+on 'develop' => sub {
+  requires "Dist::Zilla" => "5";
+  requires "Dist::Zilla::Plugin::Authority" => "0";
+  requires "Dist::Zilla::Plugin::AutoPrereqs" => "0";
+  requires "Dist::Zilla::Plugin::BumpVersionAfterRelease" => "0";
+  requires "Dist::Zilla::Plugin::CPANFile" => "0";
+  requires "Dist::Zilla::Plugin::CheckChangesHasContent" => "0";
+  requires "Dist::Zilla::Plugin::CheckMetaResources" => "0";
+  requires "Dist::Zilla::Plugin::CheckPrereqsIndexed" => "0";
+  requires "Dist::Zilla::Plugin::ConfirmRelease" => "0";
+  requires "Dist::Zilla::Plugin::CopyFilesFromBuild::Filtered" => "0";
+  requires "Dist::Zilla::Plugin::ExecDir" => "0";
+  requires "Dist::Zilla::Plugin::Git::Check" => "0";
+  requires "Dist::Zilla::Plugin::Git::CheckFor::CorrectBranch" => "0";
+  requires "Dist::Zilla::Plugin::Git::Commit" => "0";
+  requires "Dist::Zilla::Plugin::Git::Contributors" => "0";
+  requires "Dist::Zilla::Plugin::Git::GatherDir" => "0";
+  requires "Dist::Zilla::Plugin::Git::Push" => "0";
+  requires "Dist::Zilla::Plugin::Git::Tag" => "0";
+  requires "Dist::Zilla::Plugin::GithubMeta" => "0";
+  requires "Dist::Zilla::Plugin::InsertCopyright" => "0";
+  requires "Dist::Zilla::Plugin::License" => "0";
+  requires "Dist::Zilla::Plugin::MakeMaker" => "0";
+  requires "Dist::Zilla::Plugin::MakeMaker::Highlander" => "0.003";
+  requires "Dist::Zilla::Plugin::Manifest" => "0";
+  requires "Dist::Zilla::Plugin::ManifestSkip" => "0";
+  requires "Dist::Zilla::Plugin::MetaJSON" => "0";
+  requires "Dist::Zilla::Plugin::MetaNoIndex" => "0";
+  requires "Dist::Zilla::Plugin::MetaProvides::Package" => "0";
+  requires "Dist::Zilla::Plugin::MetaTests" => "0";
+  requires "Dist::Zilla::Plugin::MetaYAML" => "0";
+  requires "Dist::Zilla::Plugin::MinimumPerl" => "0";
+  requires "Dist::Zilla::Plugin::NextRelease" => "0";
+  requires "Dist::Zilla::Plugin::OnlyCorePrereqs" => "0.014";
+  requires "Dist::Zilla::Plugin::Pod2Readme" => "0";
+  requires "Dist::Zilla::Plugin::PodCoverageTests" => "0";
+  requires "Dist::Zilla::Plugin::PodSyntaxTests" => "0";
+  requires "Dist::Zilla::Plugin::Prereqs" => "0";
+  requires "Dist::Zilla::Plugin::Prereqs::AuthorDeps" => "0";
+  requires "Dist::Zilla::Plugin::PromptIfStale" => "0";
+  requires "Dist::Zilla::Plugin::PruneCruft" => "0";
+  requires "Dist::Zilla::Plugin::RewriteVersion" => "0";
+  requires "Dist::Zilla::Plugin::RunExtraTests" => "0";
+  requires "Dist::Zilla::Plugin::ShareDir" => "0";
+  requires "Dist::Zilla::Plugin::SurgicalPodWeaver" => "0";
+  requires "Dist::Zilla::Plugin::Test::Compile" => "0";
+  requires "Dist::Zilla::Plugin::Test::MinimumVersion" => "0";
+  requires "Dist::Zilla::Plugin::Test::Perl::Critic" => "0";
+  requires "Dist::Zilla::Plugin::Test::PodSpelling" => "0";
+  requires "Dist::Zilla::Plugin::Test::Portability" => "0";
+  requires "Dist::Zilla::Plugin::Test::ReportPrereqs" => "0";
+  requires "Dist::Zilla::Plugin::Test::Version" => "0";
+  requires "Dist::Zilla::Plugin::TestRelease" => "0";
+  requires "Dist::Zilla::Plugin::UploadToCPAN" => "0";
+  requires "English" => "0";
+  requires "File::Spec" => "0";
+  requires "File::Temp" => "0";
+  requires "IO::Handle" => "0";
+  requires "IPC::Open3" => "0";
+  requires "Pod::Coverage::TrustPod" => "0";
+  requires "Pod::Wordlist" => "0";
+  requires "Software::License::Perl_5" => "0";
+  requires "Test::CPAN::Meta" => "0";
+  requires "Test::More" => "0";
+  requires "Test::Pod" => "1.41";
+  requires "Test::Pod::Coverage" => "1.08";
+  requires "Test::Spelling" => "0.12";
+  requires "Test::Version" => "1";
+  requires "blib" => "1.01";
+};
diff --git a/dist.ini b/dist.ini
new file mode 100644
index 0000000..e23550c
--- /dev/null
+++ b/dist.ini
@@ -0,0 +1,158 @@
+; This file is generated from dist.ini.meta by dzil bakeini.
+; Edit that file or the bundles contained within for long-term changes.
+name = CPAN-Meta-Requirements
+author = David Golden <dagolden@cpan.org>
+author = Ricardo Signes <rjbs@cpan.org>
+license = Perl_5
+copyright_holder = David Golden and Ricardo Signes
+copyright_year = 2010
+
+[RewriteVersion / Dist::Zilla::PluginBundle::DAGOLDEN/RewriteVersion]
+
+[Git::Contributors / Dist::Zilla::PluginBundle::DAGOLDEN/Git::Contributors]
+
+[Git::GatherDir / Dist::Zilla::PluginBundle::DAGOLDEN/Git::GatherDir]
+exclude_filename = README.mkdn
+exclude_filename = cpanfile
+exclude_filename = Makefile.PL
+
+[PruneCruft / Dist::Zilla::PluginBundle::DAGOLDEN/PruneCruft]
+
+[ManifestSkip / Dist::Zilla::PluginBundle::DAGOLDEN/ManifestSkip]
+
+[InsertCopyright / Dist::Zilla::PluginBundle::DAGOLDEN/InsertCopyright]
+
+[SurgicalPodWeaver / Dist::Zilla::PluginBundle::DAGOLDEN/SurgicalPodWeaver]
+config_plugin = @DAGOLDEN
+post_code_replacer = replace_with_nothing
+replacer = replace_with_comment
+
+[Pod2Readme / Dist::Zilla::PluginBundle::DAGOLDEN/Pod2Readme]
+
+[License / Dist::Zilla::PluginBundle::DAGOLDEN/License]
+
+[Test::Compile / Dist::Zilla::PluginBundle::DAGOLDEN/Test::Compile]
+fake_home = 1
+xt_mode = 1
+
+[Test::MinimumVersion / Dist::Zilla::PluginBundle::DAGOLDEN/Test::MinimumVersion]
+max_target_perl = 5.006
+
+[Test::ReportPrereqs / Dist::Zilla::PluginBundle::DAGOLDEN/Test::ReportPrereqs]
+
+[Test::PodSpelling / Dist::Zilla::PluginBundle::DAGOLDEN/Test::PodSpelling]
+stopwords = invocant
+stopwords = dist
+
+[Test::Perl::Critic / Dist::Zilla::PluginBundle::DAGOLDEN/Test::Perl::Critic]
+
+[MetaTests / Dist::Zilla::PluginBundle::DAGOLDEN/MetaTests]
+
+[PodSyntaxTests / Dist::Zilla::PluginBundle::DAGOLDEN/PodSyntaxTests]
+
+[PodCoverageTests / Dist::Zilla::PluginBundle::DAGOLDEN/PodCoverageTests]
+
+[Test::Portability / Dist::Zilla::PluginBundle::DAGOLDEN/Test::Portability]
+options = test_one_dot = 0
+
+[Test::Version / Dist::Zilla::PluginBundle::DAGOLDEN/Test::Version]
+
+[Authority / Dist::Zilla::PluginBundle::DAGOLDEN/Authority]
+authority = cpan:DAGOLDEN
+do_munging = 0
+
+[MinimumPerl / Dist::Zilla::PluginBundle::DAGOLDEN/MinimumPerl]
+
+[AutoPrereqs / Dist::Zilla::PluginBundle::DAGOLDEN/AutoPrereqs]
+skip = ^t::lib
+
+[MetaNoIndex / Dist::Zilla::PluginBundle::DAGOLDEN/MetaNoIndex]
+directory = t
+directory = xt
+directory = examples
+directory = corpus
+package = DB
+
+[MetaProvides::Package / Dist::Zilla::PluginBundle::DAGOLDEN/MetaProvides::Package]
+meta_noindex = 1
+
+[GithubMeta / Dist::Zilla::PluginBundle::DAGOLDEN/GithubMeta]
+issues = 1
+remote = origin
+remote = github
+
+[Prereqs::AuthorDeps / Dist::Zilla::PluginBundle::DAGOLDEN/Prereqs::AuthorDeps]
+
+[MetaYAML / Dist::Zilla::PluginBundle::DAGOLDEN/MetaYAML]
+
+[MetaJSON / Dist::Zilla::PluginBundle::DAGOLDEN/MetaJSON]
+
+[CPANFile / Dist::Zilla::PluginBundle::DAGOLDEN/CPANFile]
+
+[ExecDir / Dist::Zilla::PluginBundle::DAGOLDEN/ExecDir]
+
+[ShareDir / Dist::Zilla::PluginBundle::DAGOLDEN/ShareDir]
+
+[MakeMaker / Dist::Zilla::PluginBundle::DAGOLDEN/MakeMaker]
+default_jobs = 9
+eumm_version = 6.17
+
+[PromptIfStale / Dist::Zilla::PluginBundle::DAGOLDEN/PromptIfStale]
+check_all_plugins = 1
+modules = Dist::Zilla
+modules = Dist::Zilla::PluginBundle::DAGOLDEN
+
+[CopyFilesFromBuild::Filtered / Dist::Zilla::PluginBundle::DAGOLDEN/CopyFilesFromBuild::Filtered]
+copy = Makefile.PL
+
+[Manifest / Dist::Zilla::PluginBundle::DAGOLDEN/Manifest]
+
+[Git::CheckFor::CorrectBranch / Dist::Zilla::PluginBundle::DAGOLDEN/Git::CheckFor::CorrectBranch]
+
+[Git::Check / Dist::Zilla::PluginBundle::DAGOLDEN/Git::Check]
+allow_dirty = Makefile.PL
+
+[CheckMetaResources / Dist::Zilla::PluginBundle::DAGOLDEN/CheckMetaResources]
+
+[CheckPrereqsIndexed / Dist::Zilla::PluginBundle::DAGOLDEN/CheckPrereqsIndexed]
+
+[CheckChangesHasContent / Dist::Zilla::PluginBundle::DAGOLDEN/CheckChangesHasContent]
+
+[RunExtraTests / Dist::Zilla::PluginBundle::DAGOLDEN/RunExtraTests]
+default_jobs = 9
+
+[TestRelease / Dist::Zilla::PluginBundle::DAGOLDEN/TestRelease]
+
+[ConfirmRelease / Dist::Zilla::PluginBundle::DAGOLDEN/ConfirmRelease]
+
+[UploadToCPAN / Dist::Zilla::PluginBundle::DAGOLDEN/UploadToCPAN]
+
+[Git::Commit / Dist::Zilla::PluginBundle::DAGOLDEN/Commit_Dirty_Files]
+allow_dirty = Makefile.PL
+commit_msg = Update Makefile.PL
+
+[Git::Tag / Dist::Zilla::PluginBundle::DAGOLDEN/Git::Tag]
+tag_format = release-%v
+
+[NextRelease / Dist::Zilla::PluginBundle::DAGOLDEN/NextRelease]
+
+[BumpVersionAfterRelease / Dist::Zilla::PluginBundle::DAGOLDEN/BumpVersionAfterRelease]
+
+[Git::Commit / Dist::Zilla::PluginBundle::DAGOLDEN/Commit_Changes]
+allow_dirty = Changes
+allow_dirty = Makefile.PL
+allow_dirty_match = ^lib
+commit_msg = After release: bump $VERSION and timestamp Changes
+
+[Git::Push / Dist::Zilla::PluginBundle::DAGOLDEN/Git::Push]
+push_to = origin
+
+[MakeMaker::Highlander]
+:version = 0.003
+
+[Prereqs]
+version = 0.88
+
+[OnlyCorePrereqs]
+:version = 0.014
+check_dual_life_versions = 0
diff --git a/lib/CPAN/Meta/Requirements.pm b/lib/CPAN/Meta/Requirements.pm
new file mode 100644
index 0000000..b0e83b0
--- /dev/null
+++ b/lib/CPAN/Meta/Requirements.pm
@@ -0,0 +1,1194 @@
+use 5.006; # keep at v5.6 for CPAN.pm
+use strict;
+use warnings;
+package CPAN::Meta::Requirements;
+# ABSTRACT: a set of version requirements for a CPAN dist
+
+our $VERSION = '2.140';
+
+#pod =head1 SYNOPSIS
+#pod
+#pod   use CPAN::Meta::Requirements;
+#pod
+#pod   my $build_requires = CPAN::Meta::Requirements->new;
+#pod
+#pod   $build_requires->add_minimum('Library::Foo' => 1.208);
+#pod
+#pod   $build_requires->add_minimum('Library::Foo' => 2.602);
+#pod
+#pod   $build_requires->add_minimum('Module::Bar'  => 'v1.2.3');
+#pod
+#pod   $METAyml->{build_requires} = $build_requires->as_string_hash;
+#pod
+#pod =head1 DESCRIPTION
+#pod
+#pod A CPAN::Meta::Requirements object models a set of version constraints like
+#pod those specified in the F<META.yml> or F<META.json> files in CPAN distributions,
+#pod and as defined by L<CPAN::Meta::Spec>;
+#pod It can be built up by adding more and more constraints, and it will reduce them
+#pod to the simplest representation.
+#pod
+#pod Logically impossible constraints will be identified immediately by thrown
+#pod exceptions.
+#pod
+#pod =cut
+
+use Carp ();
+
+# To help ExtUtils::MakeMaker bootstrap CPAN::Meta::Requirements on perls
+# before 5.10, we fall back to the EUMM bundled compatibility version module if
+# that's the only thing available.  This shouldn't ever happen in a normal CPAN
+# install of CPAN::Meta::Requirements, as version.pm will be picked up from
+# prereqs and be available at runtime.
+
+BEGIN {
+  eval "use version ()"; ## no critic
+  if ( my $err = $@ ) {
+    eval "use ExtUtils::MakeMaker::version" or die $err; ## no critic
+  }
+}
+
+# Perl 5.10.0 didn't have "is_qv" in version.pm
+*_is_qv = version->can('is_qv') ? sub { $_[0]->is_qv } : sub { exists $_[0]->{qv} };
+
+# construct once, reuse many times
+my $V0 = version->new(0);
+
+#pod =method new
+#pod
+#pod   my $req = CPAN::Meta::Requirements->new;
+#pod
+#pod This returns a new CPAN::Meta::Requirements object.  It takes an optional
+#pod hash reference argument.  Currently, only one key is supported:
+#pod
+#pod =for :list
+#pod * C<bad_version_hook> -- if provided, when a version cannot be parsed into
+#pod   a version object, this code reference will be called with the invalid
+#pod   version string as first argument, and the module name as second
+#pod   argument.  It must return a valid version object.
+#pod
+#pod All other keys are ignored.
+#pod
+#pod =cut
+
+my @valid_options = qw( bad_version_hook );
+
+sub new {
+  my ($class, $options) = @_;
+  $options ||= {};
+  Carp::croak "Argument to $class\->new() must be a hash reference"
+    unless ref $options eq 'HASH';
+  my %self = map {; $_ => $options->{$_}} @valid_options;
+
+  return bless \%self => $class;
+}
+
+# from version::vpp
+sub _find_magic_vstring {
+  my $value = shift;
+  my $tvalue = '';
+  require B;
+  my $sv = B::svref_2object(\$value);
+  my $magic = ref($sv) eq 'B::PVMG' ? $sv->MAGIC : undef;
+  while ( $magic ) {
+    if ( $magic->TYPE eq 'V' ) {
+      $tvalue = $magic->PTR;
+      $tvalue =~ s/^v?(.+)$/v$1/;
+      last;
+    }
+    else {
+      $magic = $magic->MOREMAGIC;
+    }
+  }
+  return $tvalue;
+}
+
+# safe if given an unblessed reference
+sub _isa_version {
+  UNIVERSAL::isa( $_[0], 'UNIVERSAL' ) && $_[0]->isa('version')
+}
+
+sub _version_object {
+  my ($self, $module, $version) = @_;
+
+  my ($vobj, $err);
+
+  if (not defined $version or (!ref($version) && $version eq '0')) {
+    return $V0;
+  }
+  elsif ( ref($version) eq 'version' || ( ref($version) && _isa_version($version) ) ) {
+    $vobj = $version;
+  }
+  else {
+    # hack around version::vpp not handling <3 character vstring literals
+    if ( $INC{'version/vpp.pm'} || $INC{'ExtUtils/MakeMaker/version/vpp.pm'} ) {
+      my $magic = _find_magic_vstring( $version );
+      $version = $magic if length $magic;
+    }
+    # pad to 3 characters if before 5.8.1 and appears to be a v-string
+    if ( $] < 5.008001 && $version !~ /\A[0-9]/ && substr($version,0,1) ne 'v' && length($version) < 3 ) {
+      $version .= "\0" x (3 - length($version));
+    }
+    eval {
+      local $SIG{__WARN__} = sub { die "Invalid version: $_[0]" };
+      # avoid specific segfault on some older version.pm versions
+      die "Invalid version: $version" if $version eq 'version';
+      $vobj = version->new($version);
+    };
+    if ( my $err = $@ ) {
+      my $hook = $self->{bad_version_hook};
+      $vobj = eval { $hook->($version, $module) }
+        if ref $hook eq 'CODE';
+      unless (eval { $vobj->isa("version") }) {
+        $err =~ s{ at .* line \d+.*$}{};
+        die "Can't convert '$version': $err";
+      }
+    }
+  }
+
+  # ensure no leading '.'
+  if ( $vobj =~ m{\A\.} ) {
+    $vobj = version->new("0$vobj");
+  }
+
+  # ensure normal v-string form
+  if ( _is_qv($vobj) ) {
+    $vobj = version->new($vobj->normal);
+  }
+
+  return $vobj;
+}
+
+#pod =method add_minimum
+#pod
+#pod   $req->add_minimum( $module => $version );
+#pod
+#pod This adds a new minimum version requirement.  If the new requirement is
+#pod redundant to the existing specification, this has no effect.
+#pod
+#pod Minimum requirements are inclusive.  C<$version> is required, along with any
+#pod greater version number.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =method add_maximum
+#pod
+#pod   $req->add_maximum( $module => $version );
+#pod
+#pod This adds a new maximum version requirement.  If the new requirement is
+#pod redundant to the existing specification, this has no effect.
+#pod
+#pod Maximum requirements are inclusive.  No version strictly greater than the given
+#pod version is allowed.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =method add_exclusion
+#pod
+#pod   $req->add_exclusion( $module => $version );
+#pod
+#pod This adds a new excluded version.  For example, you might use these three
+#pod method calls:
+#pod
+#pod   $req->add_minimum( $module => '1.00' );
+#pod   $req->add_maximum( $module => '1.82' );
+#pod
+#pod   $req->add_exclusion( $module => '1.75' );
+#pod
+#pod Any version between 1.00 and 1.82 inclusive would be acceptable, except for
+#pod 1.75.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =method exact_version
+#pod
+#pod   $req->exact_version( $module => $version );
+#pod
+#pod This sets the version required for the given module to I<exactly> the given
+#pod version.  No other version would be considered acceptable.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =cut
+
+BEGIN {
+  for my $type (qw(maximum exclusion exact_version)) {
+    my $method = "with_$type";
+    my $to_add = $type eq 'exact_version' ? $type : "add_$type";
+
+    my $code = sub {
+      my ($self, $name, $version) = @_;
+
+      $version = $self->_version_object( $name, $version );
+
+      $self->__modify_entry_for($name, $method, $version);
+
+      return $self;
+    };
+
+    no strict 'refs';
+    *$to_add = $code;
+  }
+}
+
+# add_minimum is optimized compared to generated subs above because
+# it is called frequently and with "0" or equivalent input
+sub add_minimum {
+  my ($self, $name, $version) = @_;
+
+  # stringify $version so that version->new("0.00")->stringify ne "0"
+  # which preserves the user's choice of "0.00" as the requirement
+  if (not defined $version or "$version" eq '0') {
+    return $self if $self->__entry_for($name);
+    Carp::confess("can't add new requirements to finalized requirements")
+      if $self->is_finalized;
+
+    $self->{requirements}{ $name } =
+      CPAN::Meta::Requirements::_Range::Range->with_minimum($V0, $name);
+  }
+  else {
+    $version = $self->_version_object( $name, $version );
+
+    $self->__modify_entry_for($name, 'with_minimum', $version);
+  }
+  return $self;
+}
+
+#pod =method add_requirements
+#pod
+#pod   $req->add_requirements( $another_req_object );
+#pod
+#pod This method adds all the requirements in the given CPAN::Meta::Requirements
+#pod object to the requirements object on which it was called.  If there are any
+#pod conflicts, an exception is thrown.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =cut
+
+sub add_requirements {
+  my ($self, $req) = @_;
+
+  for my $module ($req->required_modules) {
+    my $modifiers = $req->__entry_for($module)->as_modifiers;
+    for my $modifier (@$modifiers) {
+      my ($method, @args) = @$modifier;
+      $self->$method($module => @args);
+    };
+  }
+
+  return $self;
+}
+
+#pod =method accepts_module
+#pod
+#pod   my $bool = $req->accepts_module($module => $version);
+#pod
+#pod Given an module and version, this method returns true if the version
+#pod specification for the module accepts the provided version.  In other words,
+#pod given:
+#pod
+#pod   Module => '>= 1.00, < 2.00'
+#pod
+#pod We will accept 1.00 and 1.75 but not 0.50 or 2.00.
+#pod
+#pod For modules that do not appear in the requirements, this method will return
+#pod true.
+#pod
+#pod =cut
+
+sub accepts_module {
+  my ($self, $module, $version) = @_;
+
+  $version = $self->_version_object( $module, $version );
+
+  return 1 unless my $range = $self->__entry_for($module);
+  return $range->_accepts($version);
+}
+
+#pod =method clear_requirement
+#pod
+#pod   $req->clear_requirement( $module );
+#pod
+#pod This removes the requirement for a given module from the object.
+#pod
+#pod This method returns the requirements object.
+#pod
+#pod =cut
+
+sub clear_requirement {
+  my ($self, $module) = @_;
+
+  return $self unless $self->__entry_for($module);
+
+  Carp::confess("can't clear requirements on finalized requirements")
+    if $self->is_finalized;
+
+  delete $self->{requirements}{ $module };
+
+  return $self;
+}
+
+#pod =method requirements_for_module
+#pod
+#pod   $req->requirements_for_module( $module );
+#pod
+#pod This returns a string containing the version requirements for a given module in
+#pod the format described in L<CPAN::Meta::Spec> or undef if the given module has no
+#pod requirements. This should only be used for informational purposes such as error
+#pod messages and should not be interpreted or used for comparison (see
+#pod L</accepts_module> instead).
+#pod
+#pod =cut
+
+sub requirements_for_module {
+  my ($self, $module) = @_;
+  my $entry = $self->__entry_for($module);
+  return unless $entry;
+  return $entry->as_string;
+}
+
+#pod =method structured_requirements_for_module
+#pod
+#pod   $req->structured_requirements_for_module( $module );
+#pod
+#pod This returns a data structure containing the version requirements for a given
+#pod module or undef if the given module has no requirements.  This should
+#pod not be used for version checks (see L</accepts_module> instead).
+#pod
+#pod Added in version 2.134.
+#pod
+#pod =cut
+
+sub structured_requirements_for_module {
+  my ($self, $module) = @_;
+  my $entry = $self->__entry_for($module);
+  return unless $entry;
+  return $entry->as_struct;
+}
+
+#pod =method required_modules
+#pod
+#pod This method returns a list of all the modules for which requirements have been
+#pod specified.
+#pod
+#pod =cut
+
+sub required_modules { keys %{ $_[0]{requirements} } }
+
+#pod =method clone
+#pod
+#pod   $req->clone;
+#pod
+#pod This method returns a clone of the invocant.  The clone and the original object
+#pod can then be changed independent of one another.
+#pod
+#pod =cut
+
+sub clone {
+  my ($self) = @_;
+  my $new = (ref $self)->new;
+
+  return $new->add_requirements($self);
+}
+
+sub __entry_for     { $_[0]{requirements}{ $_[1] } }
+
+sub __modify_entry_for {
+  my ($self, $name, $method, $version) = @_;
+
+  my $fin = $self->is_finalized;
+  my $old = $self->__entry_for($name);
+
+  Carp::confess("can't add new requirements to finalized requirements")
+    if $fin and not $old;
+
+  my $new = ($old || 'CPAN::Meta::Requirements::_Range::Range')
+          ->$method($version, $name);
+
+  Carp::confess("can't modify finalized requirements")
+    if $fin and $old->as_string ne $new->as_string;
+
+  $self->{requirements}{ $name } = $new;
+}
+
+#pod =method is_simple
+#pod
+#pod This method returns true if and only if all requirements are inclusive minimums
+#pod -- that is, if their string expression is just the version number.
+#pod
+#pod =cut
+
+sub is_simple {
+  my ($self) = @_;
+  for my $module ($self->required_modules) {
+    # XXX: This is a complete hack, but also entirely correct.
+    return if $self->__entry_for($module)->as_string =~ /\s/;
+  }
+
+  return 1;
+}
+
+#pod =method is_finalized
+#pod
+#pod This method returns true if the requirements have been finalized by having the
+#pod C<finalize> method called on them.
+#pod
+#pod =cut
+
+sub is_finalized { $_[0]{finalized} }
+
+#pod =method finalize
+#pod
+#pod This method marks the requirements finalized.  Subsequent attempts to change
+#pod the requirements will be fatal, I<if> they would result in a change.  If they
+#pod would not alter the requirements, they have no effect.
+#pod
+#pod If a finalized set of requirements is cloned, the cloned requirements are not
+#pod also finalized.
+#pod
+#pod =cut
+
+sub finalize { $_[0]{finalized} = 1 }
+
+#pod =method as_string_hash
+#pod
+#pod This returns a reference to a hash describing the requirements using the
+#pod strings in the L<CPAN::Meta::Spec> specification.
+#pod
+#pod For example after the following program:
+#pod
+#pod   my $req = CPAN::Meta::Requirements->new;
+#pod
+#pod   $req->add_minimum('CPAN::Meta::Requirements' => 0.102);
+#pod
+#pod   $req->add_minimum('Library::Foo' => 1.208);
+#pod
+#pod   $req->add_maximum('Library::Foo' => 2.602);
+#pod
+#pod   $req->add_minimum('Module::Bar'  => 'v1.2.3');
+#pod
+#pod   $req->add_exclusion('Module::Bar'  => 'v1.2.8');
+#pod
+#pod   $req->exact_version('Xyzzy'  => '6.01');
+#pod
+#pod   my $hashref = $req->as_string_hash;
+#pod
+#pod C<$hashref> would contain:
+#pod
+#pod   {
+#pod     'CPAN::Meta::Requirements' => '0.102',
+#pod     'Library::Foo' => '>= 1.208, <= 2.206',
+#pod     'Module::Bar'  => '>= v1.2.3, != v1.2.8',
+#pod     'Xyzzy'        => '== 6.01',
+#pod   }
+#pod
+#pod =cut
+
+sub as_string_hash {
+  my ($self) = @_;
+
+  my %hash = map {; $_ => $self->{requirements}{$_}->as_string }
+             $self->required_modules;
+
+  return \%hash;
+}
+
+#pod =method add_string_requirement
+#pod
+#pod   $req->add_string_requirement('Library::Foo' => '>= 1.208, <= 2.206');
+#pod   $req->add_string_requirement('Library::Foo' => v1.208);
+#pod
+#pod This method parses the passed in string and adds the appropriate requirement
+#pod for the given module.  A version can be a Perl "v-string".  It understands
+#pod version ranges as described in the L<CPAN::Meta::Spec/Version Ranges>. For
+#pod example:
+#pod
+#pod =over 4
+#pod
+#pod =item 1.3
+#pod
+#pod =item >= 1.3
+#pod
+#pod =item <= 1.3
+#pod
+#pod =item == 1.3
+#pod
+#pod =item != 1.3
+#pod
+#pod =item > 1.3
+#pod
+#pod =item < 1.3
+#pod
+#pod =item >= 1.3, != 1.5, <= 2.0
+#pod
+#pod A version number without an operator is equivalent to specifying a minimum
+#pod (C<E<gt>=>).  Extra whitespace is allowed.
+#pod
+#pod =back
+#pod
+#pod =cut
+
+my %methods_for_op = (
+  '==' => [ qw(exact_version) ],
+  '!=' => [ qw(add_exclusion) ],
+  '>=' => [ qw(add_minimum)   ],
+  '<=' => [ qw(add_maximum)   ],
+  '>'  => [ qw(add_minimum add_exclusion) ],
+  '<'  => [ qw(add_maximum add_exclusion) ],
+);
+
+sub add_string_requirement {
+  my ($self, $module, $req) = @_;
+
+  unless ( defined $req && length $req ) {
+    $req = 0;
+    $self->_blank_carp($module);
+  }
+
+  my $magic = _find_magic_vstring( $req );
+  if (length $magic) {
+    $self->add_minimum($module => $magic);
+    return;
+  }
+
+  my @parts = split qr{\s*,\s*}, $req;
+
+  for my $part (@parts) {
+    my ($op, $ver) = $part =~ m{\A\s*(==|>=|>|<=|<|!=)\s*(.*)\z};
+
+    if (! defined $op) {
+      $self->add_minimum($module => $part);
+    } else {
+      Carp::confess("illegal requirement string: $req")
+        unless my $methods = $methods_for_op{ $op };
+
+      $self->$_($module => $ver) for @$methods;
+    }
+  }
+}
+
+#pod =method from_string_hash
+#pod
+#pod   my $req = CPAN::Meta::Requirements->from_string_hash( \%hash );
+#pod   my $req = CPAN::Meta::Requirements->from_string_hash( \%hash, \%opts );
+#pod
+#pod This is an alternate constructor for a CPAN::Meta::Requirements
+#pod object. It takes a hash of module names and version requirement
+#pod strings and returns a new CPAN::Meta::Requirements object. As with
+#pod add_string_requirement, a version can be a Perl "v-string". Optionally,
+#pod you can supply a hash-reference of options, exactly as with the L</new>
+#pod method.
+#pod
+#pod =cut
+
+sub _blank_carp {
+  my ($self, $module) = @_;
+  Carp::carp("Undefined requirement for $module treated as '0'");
+}
+
+sub from_string_hash {
+  my ($class, $hash, $options) = @_;
+
+  my $self = $class->new($options);
+
+  for my $module (keys %$hash) {
+    my $req = $hash->{$module};
+    unless ( defined $req && length $req ) {
+      $req = 0;
+      $class->_blank_carp($module);
+    }
+    $self->add_string_requirement($module, $req);
+  }
+
+  return $self;
+}
+
+##############################################################
+
+{
+  package
+    CPAN::Meta::Requirements::_Range::Exact;
+  sub _new     { bless { version => $_[1] } => $_[0] }
+
+  sub _accepts { return $_[0]{version} == $_[1] }
+
+  sub as_string { return "== $_[0]{version}" }
+
+  sub as_struct { return [ [ '==', "$_[0]{version}" ] ] }
+
+  sub as_modifiers { return [ [ exact_version => $_[0]{version} ] ] }
+
+  sub _reject_requirements {
+    my ($self, $module, $error) = @_;
+    Carp::confess("illegal requirements for $module: $error")
+  }
+
+  sub _clone {
+    (ref $_[0])->_new( version->new( $_[0]{version} ) )
+  }
+
+  sub with_exact_version {
+    my ($self, $version, $module) = @_;
+    $module = 'module' unless defined $module;
+
+    return $self->_clone if $self->_accepts($version);
+
+    $self->_reject_requirements(
+      $module,
+      "can't be exactly $version when exact requirement is already $self->{version}",
+    );
+  }
+
+  sub with_minimum {
+    my ($self, $minimum, $module) = @_;
+    $module = 'module' unless defined $module;
+
+    return $self->_clone if $self->{version} >= $minimum;
+    $self->_reject_requirements(
+      $module,
+      "minimum $minimum exceeds exact specification $self->{version}",
+    );
+  }
+
+  sub with_maximum {
+    my ($self, $maximum, $module) = @_;
+    $module = 'module' unless defined $module;
+
+    return $self->_clone if $self->{version} <= $maximum;
+    $self->_reject_requirements(
+      $module,
+      "maximum $maximum below exact specification $self->{version}",
+    );
+  }
+
+  sub with_exclusion {
+    my ($self, $exclusion, $module) = @_;
+    $module = 'module' unless defined $module;
+
+    return $self->_clone unless $exclusion == $self->{version};
+    $self->_reject_requirements(
+      $module,
+      "tried to exclude $exclusion, which is already exactly specified",
+    );
+  }
+}
+
+##############################################################
+
+{
+  package
+    CPAN::Meta::Requirements::_Range::Range;
+
+  sub _self { ref($_[0]) ? $_[0] : (bless { } => $_[0]) }
+
+  sub _clone {
+    return (bless { } => $_[0]) unless ref $_[0];
+
+    my ($s) = @_;
+    my %guts = (
+      (exists $s->{minimum} ? (minimum => version->new($s->{minimum})) : ()),
+      (exists $s->{maximum} ? (maximum => version->new($s->{maximum})) : ()),
+
+      (exists $s->{exclusions}
+        ? (exclusions => [ map { version->new($_) } @{ $s->{exclusions} } ])
+        : ()),
+    );
+
+    bless \%guts => ref($s);
+  }
+
+  sub as_modifiers {
+    my ($self) = @_;
+    my @mods;
+    push @mods, [ add_minimum => $self->{minimum} ] if exists $self->{minimum};
+    push @mods, [ add_maximum => $self->{maximum} ] if exists $self->{maximum};
+    push @mods, map {; [ add_exclusion => $_ ] } @{$self->{exclusions} || []};
+    return \@mods;
+  }
+
+  sub as_struct {
+    my ($self) = @_;
+
+    return 0 if ! keys %$self;
+
+    my @exclusions = @{ $self->{exclusions} || [] };
+
+    my @parts;
+
+    for my $tuple (
+      [ qw( >= > minimum ) ],
+      [ qw( <= < maximum ) ],
+    ) {
+      my ($op, $e_op, $k) = @$tuple;
+      if (exists $self->{$k}) {
+        my @new_exclusions = grep { $_ != $self->{ $k } } @exclusions;
+        if (@new_exclusions == @exclusions) {
+          push @parts, [ $op, "$self->{ $k }" ];
+        } else {
+          push @parts, [ $e_op, "$self->{ $k }" ];
+          @exclusions = @new_exclusions;
+        }
+      }
+    }
+
+    push @parts, map {; [ "!=", "$_" ] } @exclusions;
+
+    return \@parts;
+  }
+
+  sub as_string {
+    my ($self) = @_;
+
+    my @parts = @{ $self->as_struct };
+
+    return $parts[0][1] if @parts == 1 and $parts[0][0] eq '>=';
+
+    return join q{, }, map {; join q{ }, @$_ } @parts;
+  }
+
+  sub _reject_requirements {
+    my ($self, $module, $error) = @_;
+    Carp::confess("illegal requirements for $module: $error")
+  }
+
+  sub with_exact_version {
+    my ($self, $version, $module) = @_;
+    $module = 'module' unless defined $module;
+    $self = $self->_clone;
+
+    unless ($self->_accepts($version)) {
+      $self->_reject_requirements(
+        $module,
+        "exact specification $version outside of range " . $self->as_string
+      );
+    }
+
+    return CPAN::Meta::Requirements::_Range::Exact->_new($version);
+  }
+
+  sub _simplify {
+    my ($self, $module) = @_;
+
+    if (defined $self->{minimum} and defined $self->{maximum}) {
+      if ($self->{minimum} == $self->{maximum}) {
+        if (grep { $_ == $self->{minimum} } @{ $self->{exclusions} || [] }) {
+          $self->_reject_requirements(
+            $module,
+            "minimum and maximum are both $self->{minimum}, which is excluded",
+          );
+        }
+
+        return CPAN::Meta::Requirements::_Range::Exact->_new($self->{minimum})
+      }
+
+      if ($self->{minimum} > $self->{maximum}) {
+        $self->_reject_requirements(
+          $module,
+          "minimum $self->{minimum} exceeds maximum $self->{maximum}",
+        );
+      }
+    }
+
+    # eliminate irrelevant exclusions
+    if ($self->{exclusions}) {
+      my %seen;
+      @{ $self->{exclusions} } = grep {
+        (! defined $self->{minimum} or $_ >= $self->{minimum})
+        and
+        (! defined $self->{maximum} or $_ <= $self->{maximum})
+        and
+        ! $seen{$_}++
+      } @{ $self->{exclusions} };
+    }
+
+    return $self;
+  }
+
+  sub with_minimum {
+    my ($self, $minimum, $module) = @_;
+    $module = 'module' unless defined $module;
+    $self = $self->_clone;
+
+    if (defined (my $old_min = $self->{minimum})) {
+      $self->{minimum} = (sort { $b cmp $a } ($minimum, $old_min))[0];
+    } else {
+      $self->{minimum} = $minimum;
+    }
+
+    return $self->_simplify($module);
+  }
+
+  sub with_maximum {
+    my ($self, $maximum, $module) = @_;
+    $module = 'module' unless defined $module;
+    $self = $self->_clone;
+
+    if (defined (my $old_max = $self->{maximum})) {
+      $self->{maximum} = (sort { $a cmp $b } ($maximum, $old_max))[0];
+    } else {
+      $self->{maximum} = $maximum;
+    }
+
+    return $self->_simplify($module);
+  }
+
+  sub with_exclusion {
+    my ($self, $exclusion, $module) = @_;
+    $module = 'module' unless defined $module;
+    $self = $self->_clone;
+
+    push @{ $self->{exclusions} ||= [] }, $exclusion;
+
+    return $self->_simplify($module);
+  }
+
+  sub _accepts {
+    my ($self, $version) = @_;
+
+    return if defined $self->{minimum} and $version < $self->{minimum};
+    return if defined $self->{maximum} and $version > $self->{maximum};
+    return if defined $self->{exclusions}
+          and grep { $version == $_ } @{ $self->{exclusions} };
+
+    return 1;
+  }
+}
+
+1;
+# vim: ts=2 sts=2 sw=2 et:
+
+__END__
+
+=pod
+
+=encoding UTF-8
+
+=head1 NAME
+
+CPAN::Meta::Requirements - a set of version requirements for a CPAN dist
+
+=head1 VERSION
+
+version 2.140
+
+=head1 SYNOPSIS
+
+  use CPAN::Meta::Requirements;
+
+  my $build_requires = CPAN::Meta::Requirements->new;
+
+  $build_requires->add_minimum('Library::Foo' => 1.208);
+
+  $build_requires->add_minimum('Library::Foo' => 2.602);
+
+  $build_requires->add_minimum('Module::Bar'  => 'v1.2.3');
+
+  $METAyml->{build_requires} = $build_requires->as_string_hash;
+
+=head1 DESCRIPTION
+
+A CPAN::Meta::Requirements object models a set of version constraints like
+those specified in the F<META.yml> or F<META.json> files in CPAN distributions,
+and as defined by L<CPAN::Meta::Spec>;
+It can be built up by adding more and more constraints, and it will reduce them
+to the simplest representation.
+
+Logically impossible constraints will be identified immediately by thrown
+exceptions.
+
+=head1 METHODS
+
+=head2 new
+
+  my $req = CPAN::Meta::Requirements->new;
+
+This returns a new CPAN::Meta::Requirements object.  It takes an optional
+hash reference argument.  Currently, only one key is supported:
+
+=over 4
+
+=item *
+
+C<bad_version_hook> -- if provided, when a version cannot be parsed into a version object, this code reference will be called with the invalid version string as first argument, and the module name as second argument.  It must return a valid version object.
+
+=back
+
+All other keys are ignored.
+
+=head2 add_minimum
+
+  $req->add_minimum( $module => $version );
+
+This adds a new minimum version requirement.  If the new requirement is
+redundant to the existing specification, this has no effect.
+
+Minimum requirements are inclusive.  C<$version> is required, along with any
+greater version number.
+
+This method returns the requirements object.
+
+=head2 add_maximum
+
+  $req->add_maximum( $module => $version );
+
+This adds a new maximum version requirement.  If the new requirement is
+redundant to the existing specification, this has no effect.
+
+Maximum requirements are inclusive.  No version strictly greater than the given
+version is allowed.
+
+This method returns the requirements object.
+
+=head2 add_exclusion
+
+  $req->add_exclusion( $module => $version );
+
+This adds a new excluded version.  For example, you might use these three
+method calls:
+
+  $req->add_minimum( $module => '1.00' );
+  $req->add_maximum( $module => '1.82' );
+
+  $req->add_exclusion( $module => '1.75' );
+
+Any version between 1.00 and 1.82 inclusive would be acceptable, except for
+1.75.
+
+This method returns the requirements object.
+
+=head2 exact_version
+
+  $req->exact_version( $module => $version );
+
+This sets the version required for the given module to I<exactly> the given
+version.  No other version would be considered acceptable.
+
+This method returns the requirements object.
+
+=head2 add_requirements
+
+  $req->add_requirements( $another_req_object );
+
+This method adds all the requirements in the given CPAN::Meta::Requirements
+object to the requirements object on which it was called.  If there are any
+conflicts, an exception is thrown.
+
+This method returns the requirements object.
+
+=head2 accepts_module
+
+  my $bool = $req->accepts_module($module => $version);
+
+Given an module and version, this method returns true if the version
+specification for the module accepts the provided version.  In other words,
+given:
+
+  Module => '>= 1.00, < 2.00'
+
+We will accept 1.00 and 1.75 but not 0.50 or 2.00.
+
+For modules that do not appear in the requirements, this method will return
+true.
+
+=head2 clear_requirement
+
+  $req->clear_requirement( $module );
+
+This removes the requirement for a given module from the object.
+
+This method returns the requirements object.
+
+=head2 requirements_for_module
+
+  $req->requirements_for_module( $module );
+
+This returns a string containing the version requirements for a given module in
+the format described in L<CPAN::Meta::Spec> or undef if the given module has no
+requirements. This should only be used for informational purposes such as error
+messages and should not be interpreted or used for comparison (see
+L</accepts_module> instead).
+
+=head2 structured_requirements_for_module
+
+  $req->structured_requirements_for_module( $module );
+
+This returns a data structure containing the version requirements for a given
+module or undef if the given module has no requirements.  This should
+not be used for version checks (see L</accepts_module> instead).
+
+Added in version 2.134.
+
+=head2 required_modules
+
+This method returns a list of all the modules for which requirements have been
+specified.
+
+=head2 clone
+
+  $req->clone;
+
+This method returns a clone of the invocant.  The clone and the original object
+can then be changed independent of one another.
+
+=head2 is_simple
+
+This method returns true if and only if all requirements are inclusive minimums
+-- that is, if their string expression is just the version number.
+
+=head2 is_finalized
+
+This method returns true if the requirements have been finalized by having the
+C<finalize> method called on them.
+
+=head2 finalize
+
+This method marks the requirements finalized.  Subsequent attempts to change
+the requirements will be fatal, I<if> they would result in a change.  If they
+would not alter the requirements, they have no effect.
+
+If a finalized set of requirements is cloned, the cloned requirements are not
+also finalized.
+
+=head2 as_string_hash
+
+This returns a reference to a hash describing the requirements using the
+strings in the L<CPAN::Meta::Spec> specification.
+
+For example after the following program:
+
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum('CPAN::Meta::Requirements' => 0.102);
+
+  $req->add_minimum('Library::Foo' => 1.208);
+
+  $req->add_maximum('Library::Foo' => 2.602);
+
+  $req->add_minimum('Module::Bar'  => 'v1.2.3');
+
+  $req->add_exclusion('Module::Bar'  => 'v1.2.8');
+
+  $req->exact_version('Xyzzy'  => '6.01');
+
+  my $hashref = $req->as_string_hash;
+
+C<$hashref> would contain:
+
+  {
+    'CPAN::Meta::Requirements' => '0.102',
+    'Library::Foo' => '>= 1.208, <= 2.206',
+    'Module::Bar'  => '>= v1.2.3, != v1.2.8',
+    'Xyzzy'        => '== 6.01',
+  }
+
+=head2 add_string_requirement
+
+  $req->add_string_requirement('Library::Foo' => '>= 1.208, <= 2.206');
+  $req->add_string_requirement('Library::Foo' => v1.208);
+
+This method parses the passed in string and adds the appropriate requirement
+for the given module.  A version can be a Perl "v-string".  It understands
+version ranges as described in the L<CPAN::Meta::Spec/Version Ranges>. For
+example:
+
+=over 4
+
+=item 1.3
+
+=item >= 1.3
+
+=item <= 1.3
+
+=item == 1.3
+
+=item != 1.3
+
+=item > 1.3
+
+=item < 1.3
+
+=item >= 1.3, != 1.5, <= 2.0
+
+A version number without an operator is equivalent to specifying a minimum
+(C<E<gt>=>).  Extra whitespace is allowed.
+
+=back
+
+=head2 from_string_hash
+
+  my $req = CPAN::Meta::Requirements->from_string_hash( \%hash );
+  my $req = CPAN::Meta::Requirements->from_string_hash( \%hash, \%opts );
+
+This is an alternate constructor for a CPAN::Meta::Requirements
+object. It takes a hash of module names and version requirement
+strings and returns a new CPAN::Meta::Requirements object. As with
+add_string_requirement, a version can be a Perl "v-string". Optionally,
+you can supply a hash-reference of options, exactly as with the L</new>
+method.
+
+=for :stopwords cpan testmatrix url annocpan anno bugtracker rt cpants kwalitee diff irc mailto metadata placeholders metacpan
+
+=head1 SUPPORT
+
+=head2 Bugs / Feature Requests
+
+Please report any bugs or feature requests through the issue tracker
+at L<https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements/issues>.
+You will be notified automatically of any progress on your issue.
+
+=head2 Source Code
+
+This is open source software.  The code repository is available for
+public review and contribution under the terms of the license.
+
+L<https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements>
+
+  git clone https://github.com/Perl-Toolchain-Gang/CPAN-Meta-Requirements.git
+
+=head1 AUTHORS
+
+=over 4
+
+=item *
+
+David Golden <dagolden@cpan.org>
+
+=item *
+
+Ricardo Signes <rjbs@cpan.org>
+
+=back
+
+=head1 CONTRIBUTORS
+
+=for stopwords Ed J Karen Etheridge Leon Timmermans robario
+
+=over 4
+
+=item *
+
+Ed J <mohawk2@users.noreply.github.com>
+
+=item *
+
+Karen Etheridge <ether@cpan.org>
+
+=item *
+
+Leon Timmermans <fawaka@gmail.com>
+
+=item *
+
+robario <webmaster@robario.com>
+
+=back
+
+=head1 COPYRIGHT AND LICENSE
+
+This software is copyright (c) 2010 by David Golden and Ricardo Signes.
+
+This is free software; you can redistribute it and/or modify it under
+the same terms as the Perl 5 programming language system itself.
+
+=cut
diff --git a/perlcritic.rc b/perlcritic.rc
new file mode 100644
index 0000000..bcbbb45
--- /dev/null
+++ b/perlcritic.rc
@@ -0,0 +1,26 @@
+severity = 5
+verbose = 8
+
+[Variables::ProhibitPunctuationVars]
+allow = $@ $!
+
+[TestingAndDebugging::ProhibitNoStrict]
+allow = refs
+
+[Variables::ProhibitEvilVariables]
+variables = $DB::single
+
+# Turn these off
+[-BuiltinFunctions::ProhibitStringyEval]
+[-ControlStructures::ProhibitPostfixControls]
+[-ControlStructures::ProhibitUnlessBlocks]
+[-Documentation::RequirePodSections]
+[-InputOutput::ProhibitInteractiveTest]
+[-References::ProhibitDoubleSigils]
+[-RegularExpressions::RequireExtendedFormatting]
+[-InputOutput::ProhibitTwoArgOpen]
+[-Modules::ProhibitEvilModules]
+
+# Turn this on
+[Lax::ProhibitStringyEval::ExceptForRequire]
+
diff --git a/t/00-report-prereqs.dd b/t/00-report-prereqs.dd
new file mode 100644
index 0000000..4dbd399
--- /dev/null
+++ b/t/00-report-prereqs.dd
@@ -0,0 +1,104 @@
+do { my $x = {
+       'configure' => {
+                        'requires' => {
+                                        'ExtUtils::MakeMaker' => '6.17',
+                                        'perl' => '5.006'
+                                      }
+                      },
+       'develop' => {
+                      'requires' => {
+                                      'Dist::Zilla' => '5',
+                                      'Dist::Zilla::Plugin::Authority' => '0',
+                                      'Dist::Zilla::Plugin::AutoPrereqs' => '0',
+                                      'Dist::Zilla::Plugin::BumpVersionAfterRelease' => '0',
+                                      'Dist::Zilla::Plugin::CPANFile' => '0',
+                                      'Dist::Zilla::Plugin::CheckChangesHasContent' => '0',
+                                      'Dist::Zilla::Plugin::CheckMetaResources' => '0',
+                                      'Dist::Zilla::Plugin::CheckPrereqsIndexed' => '0',
+                                      'Dist::Zilla::Plugin::ConfirmRelease' => '0',
+                                      'Dist::Zilla::Plugin::CopyFilesFromBuild::Filtered' => '0',
+                                      'Dist::Zilla::Plugin::ExecDir' => '0',
+                                      'Dist::Zilla::Plugin::Git::Check' => '0',
+                                      'Dist::Zilla::Plugin::Git::CheckFor::CorrectBranch' => '0',
+                                      'Dist::Zilla::Plugin::Git::Commit' => '0',
+                                      'Dist::Zilla::Plugin::Git::Contributors' => '0',
+                                      'Dist::Zilla::Plugin::Git::GatherDir' => '0',
+                                      'Dist::Zilla::Plugin::Git::Push' => '0',
+                                      'Dist::Zilla::Plugin::Git::Tag' => '0',
+                                      'Dist::Zilla::Plugin::GithubMeta' => '0',
+                                      'Dist::Zilla::Plugin::InsertCopyright' => '0',
+                                      'Dist::Zilla::Plugin::License' => '0',
+                                      'Dist::Zilla::Plugin::MakeMaker' => '0',
+                                      'Dist::Zilla::Plugin::MakeMaker::Highlander' => '0.003',
+                                      'Dist::Zilla::Plugin::Manifest' => '0',
+                                      'Dist::Zilla::Plugin::ManifestSkip' => '0',
+                                      'Dist::Zilla::Plugin::MetaJSON' => '0',
+                                      'Dist::Zilla::Plugin::MetaNoIndex' => '0',
+                                      'Dist::Zilla::Plugin::MetaProvides::Package' => '0',
+                                      'Dist::Zilla::Plugin::MetaTests' => '0',
+                                      'Dist::Zilla::Plugin::MetaYAML' => '0',
+                                      'Dist::Zilla::Plugin::MinimumPerl' => '0',
+                                      'Dist::Zilla::Plugin::NextRelease' => '0',
+                                      'Dist::Zilla::Plugin::OnlyCorePrereqs' => '0.014',
+                                      'Dist::Zilla::Plugin::Pod2Readme' => '0',
+                                      'Dist::Zilla::Plugin::PodCoverageTests' => '0',
+                                      'Dist::Zilla::Plugin::PodSyntaxTests' => '0',
+                                      'Dist::Zilla::Plugin::Prereqs' => '0',
+                                      'Dist::Zilla::Plugin::Prereqs::AuthorDeps' => '0',
+                                      'Dist::Zilla::Plugin::PromptIfStale' => '0',
+                                      'Dist::Zilla::Plugin::PruneCruft' => '0',
+                                      'Dist::Zilla::Plugin::RewriteVersion' => '0',
+                                      'Dist::Zilla::Plugin::RunExtraTests' => '0',
+                                      'Dist::Zilla::Plugin::ShareDir' => '0',
+                                      'Dist::Zilla::Plugin::SurgicalPodWeaver' => '0',
+                                      'Dist::Zilla::Plugin::Test::Compile' => '0',
+                                      'Dist::Zilla::Plugin::Test::MinimumVersion' => '0',
+                                      'Dist::Zilla::Plugin::Test::Perl::Critic' => '0',
+                                      'Dist::Zilla::Plugin::Test::PodSpelling' => '0',
+                                      'Dist::Zilla::Plugin::Test::Portability' => '0',
+                                      'Dist::Zilla::Plugin::Test::ReportPrereqs' => '0',
+                                      'Dist::Zilla::Plugin::Test::Version' => '0',
+                                      'Dist::Zilla::Plugin::TestRelease' => '0',
+                                      'Dist::Zilla::Plugin::UploadToCPAN' => '0',
+                                      'English' => '0',
+                                      'File::Spec' => '0',
+                                      'File::Temp' => '0',
+                                      'IO::Handle' => '0',
+                                      'IPC::Open3' => '0',
+                                      'Pod::Coverage::TrustPod' => '0',
+                                      'Pod::Wordlist' => '0',
+                                      'Software::License::Perl_5' => '0',
+                                      'Test::CPAN::Meta' => '0',
+                                      'Test::More' => '0',
+                                      'Test::Pod' => '1.41',
+                                      'Test::Pod::Coverage' => '1.08',
+                                      'Test::Spelling' => '0.12',
+                                      'Test::Version' => '1',
+                                      'blib' => '1.01'
+                                    }
+                    },
+       'runtime' => {
+                      'requires' => {
+                                      'B' => '0',
+                                      'Carp' => '0',
+                                      'perl' => '5.006',
+                                      'strict' => '0',
+                                      'version' => '0.88',
+                                      'warnings' => '0'
+                                    }
+                    },
+       'test' => {
+                   'recommends' => {
+                                     'CPAN::Meta' => '2.120900'
+                                   },
+                   'requires' => {
+                                   'ExtUtils::MakeMaker' => '0',
+                                   'File::Spec' => '0',
+                                   'Test::More' => '0.88',
+                                   'perl' => '5.006',
+                                   'version' => '0.88'
+                                 }
+                 }
+     };
+  $x;
+ }
\ No newline at end of file
diff --git a/t/00-report-prereqs.t b/t/00-report-prereqs.t
new file mode 100644
index 0000000..d8d15ba
--- /dev/null
+++ b/t/00-report-prereqs.t
@@ -0,0 +1,183 @@
+#!perl
+
+use strict;
+use warnings;
+
+# This test was generated by Dist::Zilla::Plugin::Test::ReportPrereqs 0.021
+
+use Test::More tests => 1;
+
+use ExtUtils::MakeMaker;
+use File::Spec;
+
+# from $version::LAX
+my $lax_version_re =
+    qr/(?: undef | (?: (?:[0-9]+) (?: \. | (?:\.[0-9]+) (?:_[0-9]+)? )?
+            |
+            (?:\.[0-9]+) (?:_[0-9]+)?
+        ) | (?:
+            v (?:[0-9]+) (?: (?:\.[0-9]+)+ (?:_[0-9]+)? )?
+            |
+            (?:[0-9]+)? (?:\.[0-9]+){2,} (?:_[0-9]+)?
+        )
+    )/x;
+
+# hide optional CPAN::Meta modules from prereq scanner
+# and check if they are available
+my $cpan_meta = "CPAN::Meta";
+my $cpan_meta_pre = "CPAN::Meta::Prereqs";
+my $HAS_CPAN_META = eval "require $cpan_meta; $cpan_meta->VERSION('2.120900')" && eval "require $cpan_meta_pre"; ## no critic
+
+# Verify requirements?
+my $DO_VERIFY_PREREQS = 1;
+
+sub _max {
+    my $max = shift;
+    $max = ( $_ > $max ) ? $_ : $max for @_;
+    return $max;
+}
+
+sub _merge_prereqs {
+    my ($collector, $prereqs) = @_;
+
+    # CPAN::Meta::Prereqs object
+    if (ref $collector eq $cpan_meta_pre) {
+        return $collector->with_merged_prereqs(
+            CPAN::Meta::Prereqs->new( $prereqs )
+        );
+    }
+
+    # Raw hashrefs
+    for my $phase ( keys %$prereqs ) {
+        for my $type ( keys %{ $prereqs->{$phase} } ) {
+            for my $module ( keys %{ $prereqs->{$phase}{$type} } ) {
+                $collector->{$phase}{$type}{$module} = $prereqs->{$phase}{$type}{$module};
+            }
+        }
+    }
+
+    return $collector;
+}
+
+my @include = qw(
+
+);
+
+my @exclude = qw(
+
+);
+
+# Add static prereqs to the included modules list
+my $static_prereqs = do 't/00-report-prereqs.dd';
+
+# Merge all prereqs (either with ::Prereqs or a hashref)
+my $full_prereqs = _merge_prereqs(
+    ( $HAS_CPAN_META ? $cpan_meta_pre->new : {} ),
+    $static_prereqs
+);
+
+# Add dynamic prereqs to the included modules list (if we can)
+my ($source) = grep { -f } 'MYMETA.json', 'MYMETA.yml';
+if ( $source && $HAS_CPAN_META ) {
+    if ( my $meta = eval { CPAN::Meta->load_file($source) } ) {
+        $full_prereqs = _merge_prereqs($full_prereqs, $meta->prereqs);
+    }
+}
+else {
+    $source = 'static metadata';
+}
+
+my @full_reports;
+my @dep_errors;
+my $req_hash = $HAS_CPAN_META ? $full_prereqs->as_string_hash : $full_prereqs;
+
+# Add static includes into a fake section
+for my $mod (@include) {
+    $req_hash->{other}{modules}{$mod} = 0;
+}
+
+for my $phase ( qw(configure build test runtime develop other) ) {
+    next unless $req_hash->{$phase};
+    next if ($phase eq 'develop' and not $ENV{AUTHOR_TESTING});
+
+    for my $type ( qw(requires recommends suggests conflicts modules) ) {
+        next unless $req_hash->{$phase}{$type};
+
+        my $title = ucfirst($phase).' '.ucfirst($type);
+        my @reports = [qw/Module Want Have/];
+
+        for my $mod ( sort keys %{ $req_hash->{$phase}{$type} } ) {
+            next if $mod eq 'perl';
+            next if grep { $_ eq $mod } @exclude;
+
+            my $file = $mod;
+            $file =~ s{::}{/}g;
+            $file .= ".pm";
+            my ($prefix) = grep { -e File::Spec->catfile($_, $file) } @INC;
+
+            my $want = $req_hash->{$phase}{$type}{$mod};
+            $want = "undef" unless defined $want;
+            $want = "any" if !$want && $want == 0;
+
+            my $req_string = $want eq 'any' ? 'any version required' : "version '$want' required";
+
+            if ($prefix) {
+                my $have = MM->parse_version( File::Spec->catfile($prefix, $file) );
+                $have = "undef" unless defined $have;
+                push @reports, [$mod, $want, $have];
+
+                if ( $DO_VERIFY_PREREQS && $HAS_CPAN_META && $type eq 'requires' ) {
+                    if ( $have !~ /\A$lax_version_re\z/ ) {
+                        push @dep_errors, "$mod version '$have' cannot be parsed ($req_string)";
+                    }
+                    elsif ( ! $full_prereqs->requirements_for( $phase, $type )->accepts_module( $mod => $have ) ) {
+                        push @dep_errors, "$mod version '$have' is not in required range '$want'";
+                    }
+                }
+            }
+            else {
+                push @reports, [$mod, $want, "missing"];
+
+                if ( $DO_VERIFY_PREREQS && $type eq 'requires' ) {
+                    push @dep_errors, "$mod is not installed ($req_string)";
+                }
+            }
+        }
+
+        if ( @reports ) {
+            push @full_reports, "=== $title ===\n\n";
+
+            my $ml = _max( map { length $_->[0] } @reports );
+            my $wl = _max( map { length $_->[1] } @reports );
+            my $hl = _max( map { length $_->[2] } @reports );
+
+            if ($type eq 'modules') {
+                splice @reports, 1, 0, ["-" x $ml, "", "-" x $hl];
+                push @full_reports, map { sprintf("    %*s %*s\n", -$ml, $_->[0], $hl, $_->[2]) } @reports;
+            }
+            else {
+                splice @reports, 1, 0, ["-" x $ml, "-" x $wl, "-" x $hl];
+                push @full_reports, map { sprintf("    %*s %*s %*s\n", -$ml, $_->[0], $wl, $_->[1], $hl, $_->[2]) } @reports;
+            }
+
+            push @full_reports, "\n";
+        }
+    }
+}
+
+if ( @full_reports ) {
+    diag "\nVersions for all modules listed in $source (including optional ones):\n\n", @full_reports;
+}
+
+if ( @dep_errors ) {
+    diag join("\n",
+        "\n*** WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING ***\n",
+        "The following REQUIRED prerequisites were not satisfied:\n",
+        @dep_errors,
+        "\n"
+    );
+}
+
+pass;
+
+# vim: ts=4 sts=4 sw=4 et:
diff --git a/t/accepts.t b/t/accepts.t
new file mode 100644
index 0000000..8a694ea
--- /dev/null
+++ b/t/accepts.t
@@ -0,0 +1,39 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+
+use Test::More 0.88;
+
+{
+  my $req = CPAN::Meta::Requirements->new->add_minimum(Foo => 1);
+
+  ok(  $req->accepts_module(Foo => 1), "need 1, got 1");
+  ok(! $req->accepts_module(Foo => 0), "need 0, got 1");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new->add_minimum(Foo => 0);
+
+  ok(  $req->accepts_module(Foo => 1), "need 0, got 1");
+  ok(  $req->accepts_module(Foo => undef), "need 0, got undef");
+  ok(  $req->accepts_module(Foo => "v0"), "need 0, got 'v0'");
+  ok(  $req->accepts_module(Foo => v1.2.3), "need 0, got v1.2.3");
+  ok(  $req->accepts_module(Foo => "v1.2.3"), "need 0, got 'v1.2.3'");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new->add_maximum(Foo => 1);
+
+  ok(  $req->accepts_module(Foo => 1), "need <=1, got 1");
+  ok(! $req->accepts_module(Foo => 2), "need <=1, got 2");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new->add_exclusion(Foo => 1);
+
+  ok(  $req->accepts_module(Foo => 0), "need !1, got 0");
+  ok(! $req->accepts_module(Foo => 1), "need !1, got 1");
+}
+
+done_testing;
diff --git a/t/bad_version_hook.t b/t/bad_version_hook.t
new file mode 100644
index 0000000..d021466
--- /dev/null
+++ b/t/bad_version_hook.t
@@ -0,0 +1,62 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+use version;
+
+use Test::More 0.88;
+
+my %DATA = (
+  'Foo::Bar' => [ 10, 10 ],
+  'Foo::Baz' => [ 'invalid_version', 42 ],
+  'Foo::Qux' => [ 'version', 42 ],
+);
+my %input = map { ($_ => $DATA{$_}->[0]) } keys %DATA;
+my %expected = map { ($_ => $DATA{$_}->[1]) } keys %DATA;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+my $hook_text;
+sub _fixit { my ($v, $m) = @_; $hook_text .= $m; return version->new(42) }
+
+{
+  my $req = CPAN::Meta::Requirements->new( {bad_version_hook => \&_fixit} );
+
+  my ($k, $v);
+  while (($k, $v) = each %input) {
+    note "adding minimum requirement: $k => $v";
+    eval { $req->add_minimum($k => $v) };
+    is( $@, '', "adding minimum '$k' for $v" );
+  }
+  like( $hook_text, qr/Foo::Baz/, 'hook stored module name' );
+
+  is_deeply(
+    $req->as_string_hash,
+    \%expected,
+    "hook fixes invalid version",
+  );
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new( {bad_version_hook => sub { 0 }} );
+
+  dies_ok { $req->add_minimum('Foo::Baz' => 'invalid_version') }
+    qr/Invalid version/,
+    "dies if hook doesn't return version object";
+
+}
+
+
+done_testing;
diff --git a/t/basic.t b/t/basic.t
new file mode 100644
index 0000000..26b252c
--- /dev/null
+++ b/t/basic.t
@@ -0,0 +1,274 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+
+use Test::More 0.88;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum('Foo::Bar' => 10);
+  $req->add_minimum('Foo::Bar' => 0);
+  $req->add_minimum('Foo::Bar' => 2);
+
+  $req->add_minimum('Foo::Baz' => version->declare('v1.2.3'));
+
+  $req->add_minimum('Foo::Undef' => undef);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      'Foo::Bar'   => 10,
+      'Foo::Baz'   => 'v1.2.3',
+      'Foo::Undef' => 0,
+    },
+    "some basic minimums",
+  );
+
+  ok($req->is_simple, "just minimums? simple");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_maximum(Foo => 1);
+  is_deeply($req->as_string_hash, { Foo => '<= 1' }, "max only");
+
+  ok(! $req->is_simple, "maximums? not simple");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_exclusion(Foo => 1);
+  $req->add_exclusion(Foo => 2);
+
+  # Why would you ever do this?? -- rjbs, 2010-02-20
+  is_deeply($req->as_string_hash, { Foo => '!= 1, != 2' }, "excl only");
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum(Foo => 1);
+  $req->add_maximum(Foo => 2);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '>= 1, <= 2',
+    },
+    "min and max",
+  );
+
+  $req->add_maximum(Foo => 3);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '>= 1, <= 2',
+    },
+    "exclusions already outside range do not matter",
+  );
+
+  $req->add_exclusion(Foo => 1.5);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '>= 1, <= 2, != 1.5',
+    },
+    "exclusions",
+  );
+
+  $req->add_minimum(Foo => 1.6);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '>= 1.6, <= 2',
+    },
+    "exclusions go away when made irrelevant",
+  );
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum(Foo => 1);
+  $req->add_exclusion(Foo => 1);
+  $req->add_maximum(Foo => 2);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '> 1, <= 2',
+    },
+    "we can exclude an endpoint",
+  );
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_minimum(Foo => 1);
+
+  $req->add_exclusion(Foo => 1);
+
+  dies_ok { $req->add_maximum(Foo => 1); }
+    qr/both 1, which is excluded/,
+    "can't exclude all values" ;
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_minimum(Foo => 1);
+  dies_ok {$req->exact_version(Foo => 0.5); }
+    qr/outside of range/,
+    "can't add outside-range exact spec to range";
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_minimum(Foo => 1);
+  dies_ok { $req->add_maximum(Foo => 0.5); }
+    qr/minimum 1 exceeds maximum/,
+    "maximum must exceed (or equal) minimum";
+
+  $req = CPAN::Meta::Requirements->new;
+  $req->add_maximum(Foo => 0.5);
+  dies_ok { $req->add_minimum(Foo => 1); }
+    qr/minimum 1 exceeds maximum/,
+    "maximum must exceed (or equal) minimum";
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum(Foo => 1);
+  $req->add_maximum(Foo => 1);
+
+  $req->add_maximum(Foo => 2); # ignored
+  $req->add_minimum(Foo => 0); # ignored
+  $req->add_exclusion(Foo => .5); # ignored
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      'Foo' => '== 1',
+    },
+    "if min==max, becomes exact requirement",
+  );
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+  $req->add_minimum(Foo => 1);
+  $req->add_exclusion(Foo => 0);
+  $req->add_maximum(Foo => 3);
+  $req->add_exclusion(Foo => 4);
+
+  $req->add_exclusion(Foo => 2);
+  $req->add_exclusion(Foo => 2);
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '>= 1, <= 3, != 2',
+    },
+    'test exclusion-skipping',
+  );
+
+  is_deeply(
+    $req->structured_requirements_for_module('Foo'),
+    # remember, it's okay to change the exact results, as long as the meaning
+    # is unchanged -- rjbs, 2012-07-11
+    [
+      [ '>=', '1' ],
+      [ '<=', '3' ],
+      [ '!=', '2' ],
+    ],
+    "structured requirements for Foo",
+  );
+}
+
+sub foo_1 {
+  my $req = CPAN::Meta::Requirements->new;
+  $req->exact_version(Foo => 1);
+  return $req;
+}
+
+{
+  my $req = foo_1;
+
+  $req->exact_version(Foo => 1); # ignored
+
+  is_deeply($req->as_string_hash, { Foo => '== 1' }, "exact requirement");
+
+  dies_ok { $req->exact_version(Foo => 2); }
+    qr/can't be exactly 2.+already/,
+    "can't exactly specify differing versions" ;
+
+  $req = foo_1;
+  $req->add_minimum(Foo => 0); # ignored
+  $req->add_maximum(Foo => 2); # ignored
+
+  dies_ok { $req->add_maximum(Foo => 0); } qr/maximum 0 below exact/, "max < fixed";
+
+  $req = foo_1;
+  dies_ok { $req->add_minimum(Foo => 2); } qr/minimum 2 exceeds exact/, "min > fixed";
+
+  $req = foo_1;
+  $req->add_exclusion(Foo => 8); # ignored
+  dies_ok { $req->add_exclusion(Foo => 1); } qr/tried to exclude/, "!= && ==";
+}
+
+{
+  my $req = foo_1;
+
+  is($req->requirements_for_module('Foo'), '== 1', 'requirements_for_module');
+
+  is_deeply(
+    $req->structured_requirements_for_module('Foo'),
+    [ [ '==', '1' ] ],
+    'structured_requirements_for_module'
+  );
+
+  # test empty/undef returns
+  my @list = $req->requirements_for_module('FooBarBamBaz');
+  my $scalar = $req->requirements_for_module('FooBarBamBaz');
+  is ( scalar @list, 0, "requirements_for_module() returns empty for not found (list)" );
+  is ( $scalar, undef, "requirements_for_module() returns undef for not found (scalar)" );
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum(Foo => "0.00");
+
+  my $req2 = CPAN::Meta::Requirements->new;
+  $req2->add_requirements($req);
+
+  is_deeply(
+    $req2->as_string_hash,
+    {
+      Foo => '0.00'
+    },
+    "0.00 precision preserved",
+  );
+
+}
+
+done_testing;
diff --git a/t/finalize.t b/t/finalize.t
new file mode 100644
index 0000000..aa139d3
--- /dev/null
+++ b/t/finalize.t
@@ -0,0 +1,93 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+
+use Test::More 0.88;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_minimum('Foo::Bar' => 10);
+  $req->add_minimum('Foo::Bar' => 0);
+  $req->add_minimum('Foo::Bar' => 2);
+
+  $req->add_minimum('Foo::Baz' => version->declare('v1.2.3'));
+
+  $req->add_minimum('Foo::Undef' => undef);
+
+  my $want = {
+    'Foo::Bar'   => 10,
+    'Foo::Baz'   => 'v1.2.3',
+    'Foo::Undef' => 0,
+  };
+
+  is_deeply(
+    $req->as_string_hash,
+    $want,
+    "some basic minimums",
+  );
+
+  $req->finalize;
+
+  $req->add_minimum('Foo::Bar', 2);
+
+  pass('we can add a Foo::Bar requirement with no effect post finalization');
+
+  dies_ok { $req->add_minimum('Foo::Bar', 12) }
+    qr{finalized req},
+    "can't add a higher Foo::Bar after finalization";
+
+  dies_ok { $req->add_minimum('Foo::New', 0) }
+    qr{finalized req},
+    "can't add a new module prereq after finalization";
+
+  dies_ok { $req->clear_requirement('Foo::Bar') }
+    qr{finalized req},
+    "can't clear an existing prereq after finalization";
+
+  $req->clear_requirement('Bogus::Req');
+
+  pass('we can clear a prereq that was not set to begin with');
+
+  is_deeply(
+    $req->as_string_hash,
+    $want,
+    "none of our attempts to alter the object post-finalization worked",
+  );
+
+  my $cloned = $req->clone;
+
+  $cloned->add_minimum('Foo::Bar', 12);
+
+  is_deeply(
+    $cloned->as_string_hash,
+    {
+      %$want,
+      'Foo::Bar' => 12,
+    },
+    "we can alter a cloned V:R (finalization does not survive cloning)",
+  );
+
+  is_deeply(
+    $req->as_string_hash,
+    $want,
+    "...and original requirements are untouched",
+  );
+}
+
+done_testing;
diff --git a/t/from-hash.t b/t/from-hash.t
new file mode 100644
index 0000000..fa5d398
--- /dev/null
+++ b/t/from-hash.t
@@ -0,0 +1,105 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+
+use Test::More 0.88;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+{
+  my $string_hash = {
+    Left   => 10,
+    Shared => '>= 2, <= 9, != 7',
+    Right  => 18,
+  };
+
+  my $req = CPAN::Meta::Requirements->from_string_hash($string_hash);
+
+  is_deeply(
+    $req->as_string_hash,
+    $string_hash,
+    "we can load from a string hash",
+  );
+}
+
+SKIP: {
+  skip "Can't tell v-strings from strings until 5.8.1", 1
+    unless $] gt '5.008';
+  my $string_hash = {
+    Left   => 10,
+    Shared => '= 2',
+    Right  => 18,
+  };
+
+  dies_ok { CPAN::Meta::Requirements->from_string_hash($string_hash) }
+    qr/Can't convert/,
+    "we die when we can't understand a version spec";
+}
+
+{
+  my $undef_hash = { Undef => undef };
+  my $z_hash = { ZeroLength => '' };
+
+  my $warning;
+  local $SIG{__WARN__} = sub { $warning = join("\n",@_) };
+
+  my $req = CPAN::Meta::Requirements->from_string_hash($undef_hash);
+  like ($warning, qr/Undefined requirement.*treated as '0'/, "undef requirement warns");
+  $req->add_string_requirement(%$z_hash);
+  like ($warning, qr/Undefined requirement.*treated as '0'/, "'' requirement warns");
+
+  is_deeply(
+    $req->as_string_hash,
+    { map { ($_ => 0) } keys(%$undef_hash), keys(%$z_hash) },
+    "undef/'' requirements treated as '0'",
+  );
+}
+
+SKIP: {
+  skip "Can't tell v-strings from strings until 5.8.1", 2
+    unless $] gt '5.008';
+  my $string_hash = {
+    Left   => 10,
+    Shared => v50.44.60,
+    Right  => 18,
+  };
+
+  my $warning;
+  local $SIG{__WARN__} = sub { $warning = join("\n",@_) };
+
+  my $req = eval { CPAN::Meta::Requirements->from_string_hash($string_hash); };
+  is( $@, '', "vstring in string hash lives" );
+
+  ok(
+    $req->accepts_module(Shared => 'v50.44.60'),
+    "vstring treated as if string",
+  );
+}
+
+
+{
+  my $req = CPAN::Meta::Requirements->from_string_hash(
+    { Bad => 'invalid', },
+    { bad_version_hook => sub { version->new(42) } },
+  );
+
+  ok(
+    $req->accepts_module(Bad => 42),
+    "options work 2nd arg to f_s_h",
+  );
+}
+
+done_testing;
diff --git a/t/merge.t b/t/merge.t
new file mode 100644
index 0000000..6610c05
--- /dev/null
+++ b/t/merge.t
@@ -0,0 +1,138 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+
+use Test::More 0.88;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+{
+  my $req_1 = CPAN::Meta::Requirements->new;
+  $req_1->add_minimum(Left   => 10);
+  $req_1->add_minimum(Shared => 2);
+  $req_1->add_exclusion(Shared => 7);
+
+  my $req_2 = CPAN::Meta::Requirements->new;
+  $req_2->add_minimum(Shared => 1);
+  $req_2->add_maximum(Shared => 9);
+  $req_2->add_minimum(Right  => 18);
+
+  $req_1->add_requirements($req_2);
+
+  is_deeply(
+    $req_1->as_string_hash,
+    {
+      Left   => 10,
+      Shared => '>= 2, <= 9, != 7',
+      Right  => 18,
+    },
+    "add requirements to an existing set of requirements",
+  );
+}
+
+{
+  my $req_1 = CPAN::Meta::Requirements->new;
+  $req_1->add_minimum(Left   => 10);
+  $req_1->add_minimum(Shared => 2);
+  $req_1->add_exclusion(Shared => 7);
+  $req_1->exact_version(Exact => 8);
+
+  my $req_2 = CPAN::Meta::Requirements->new;
+  $req_2->add_minimum(Shared => 1);
+  $req_2->add_maximum(Shared => 9);
+  $req_2->add_minimum(Right  => 18);
+  $req_2->exact_version(Exact => 8);
+
+  my $clone = $req_1->clone->add_requirements($req_2);
+
+  is_deeply(
+    $req_1->as_string_hash,
+    {
+      Left   => 10,
+      Shared => '>= 2, != 7',
+      Exact  => '== 8',
+    },
+    "clone/add_requirements does not affect lhs",
+  );
+
+  is_deeply(
+    $req_2->as_string_hash,
+    {
+      Shared => '>= 1, <= 9',
+      Right  => 18,
+      Exact  => '== 8',
+    },
+    "clone/add_requirements does not affect rhs",
+  );
+
+  is_deeply(
+    $clone->as_string_hash,
+    {
+      Left   => 10,
+      Shared => '>= 2, <= 9, != 7',
+      Right  => 18,
+      Exact  => '== 8',
+    },
+    "clone and add_requirements",
+  );
+
+  $clone->clear_requirement('Shared');
+
+  is_deeply(
+    $clone->as_string_hash,
+    {
+      Left   => 10,
+      Right  => 18,
+      Exact  => '== 8',
+    },
+    "cleared the shared requirement",
+  );
+}
+
+{
+  my $req_1 = CPAN::Meta::Requirements->new;
+  $req_1->add_maximum(Foo => 1);
+
+  my $req_2 = $req_1->clone;
+
+  is_deeply(
+    $req_2->as_string_hash,
+    {
+      'Foo' => '<= 1',
+    },
+    'clone with only max',
+  );
+}
+
+{
+  my $left = CPAN::Meta::Requirements->new;
+  $left->add_minimum(Foo => 0);
+  $left->add_minimum(Bar => 1);
+
+  my $right = CPAN::Meta::Requirements->new;
+  $right->add_requirements($left);
+
+  is_deeply(
+    $right->as_string_hash,
+    {
+      Foo => 0,
+      Bar => 1,
+    },
+    "we do not lose 0-min reqs on merge",
+  );
+}
+
+done_testing;
diff --git a/t/strings.t b/t/strings.t
new file mode 100644
index 0000000..da4e4e1
--- /dev/null
+++ b/t/strings.t
@@ -0,0 +1,80 @@
+use strict;
+use warnings;
+use Test::More 0.88;
+
+sub dies_ok (&@) {
+  my ($code, $qr, $comment) = @_;
+
+  no warnings 'redefine';
+  local *Regexp::CARP_TRACE  = sub { "<regexp>" };
+  my $lived = eval { $code->(); 1 };
+
+  if ($lived) {
+    fail("$comment: did not die");
+  } else {
+    like($@, $qr, $comment);
+  }
+}
+
+use CPAN::Meta::Requirements;
+
+my $req = CPAN::Meta::Requirements->new;
+
+# Test ==
+$req->add_string_requirement('Foo::Bar', '== 1.3');
+ok($req->accepts_module('Foo::Bar' => '1.3'), 'exact version (==)');
+ok(!$req->accepts_module('Foo::Bar' => '1.2'), 'lower version (==)');
+ok(!$req->accepts_module('Foo::Bar' => '1.4'), 'higher version (==)');
+
+# Test !=
+$req->add_string_requirement('Foo::Baz', '!= 1.3');
+ok(!$req->accepts_module('Foo::Baz' => '1.3'), 'exact version (!=)');
+ok($req->accepts_module('Foo::Baz' => '1.2'), 'lower version (!=)');
+ok($req->accepts_module('Foo::Baz' => '1.4'), 'higher version (!=)');
+
+# Test >=
+$req->add_string_requirement('Foo::Gorch', '>= 1.3');
+ok($req->accepts_module('Foo::Gorch' => '1.3'), 'exact version (>=)');
+ok(!$req->accepts_module('Foo::Gorch' => '1.2'), 'lower version (>=)');
+ok($req->accepts_module('Foo::Gorch' => '1.4'), 'higher version (>=)');
+
+# Test <=
+$req->add_string_requirement('Foo::Graz', '<= 1.3');
+ok($req->accepts_module('Foo::Graz' => '1.3'), 'exact version (<=)');
+ok($req->accepts_module('Foo::Graz' => '1.2'), 'lower version (<=)');
+ok(!$req->accepts_module('Foo::Graz' => '1.4'), 'higher version (<=)');
+
+# Test ""
+$req->add_string_requirement('Foo::Blurb', '>= 1.3');
+ok($req->accepts_module('Foo::Blurb' => '1.3'), 'exact version (>=)');
+ok(!$req->accepts_module('Foo::Blurb' => '1.2'), 'lower version (>=)');
+ok($req->accepts_module('Foo::Blurb' => '1.4'), 'higher version (>=)');
+
+# Test multiple requirements
+$req->add_string_requirement('A::Tribe::Called', '>= 1.3, <= 2.0, != 1.6');
+ok($req->accepts_module('A::Tribe::Called' => '1.5'), 'middle version (>=, <=, !)');
+ok(!$req->accepts_module('A::Tribe::Called' => '1.2'), 'lower version (>=, <=, !)');
+ok(!$req->accepts_module('A::Tribe::Called' => '2.1'), 'higher version (>=, <=, !)');
+ok(!$req->accepts_module('A::Tribe::Called' => '1.6'), 'excluded version (>=, <=, !)');
+
+# Test precision
+{
+  my $req = CPAN::Meta::Requirements->new;
+
+  $req->add_string_requirement(Foo => "0.00");
+
+  is_deeply(
+    $req->as_string_hash,
+    {
+      Foo => '0.00'
+    },
+    "0.00 precision preserved",
+  );
+}
+
+# Test fatal errors
+dies_ok { $req->add_string_requirement('Foo::Bar', "not really a version") }
+  qr/Can't convert/,
+  "conversion failure caught";
+
+done_testing;
diff --git a/t/version-cleanup.t b/t/version-cleanup.t
new file mode 100644
index 0000000..6ef986c
--- /dev/null
+++ b/t/version-cleanup.t
@@ -0,0 +1,23 @@
+use strict;
+use warnings;
+
+use CPAN::Meta::Requirements;
+use version;
+
+use Test::More 0.88;
+
+my @cases = (
+    [ "2-part literal v-string" => v1.2 => "v1.2.0" ],
+    [ "1-part literal v-string" => v1 => "v1.0.0" ],
+    [ "1-part literal v-string (0)" => v0 => "v0.0.0" ],
+);
+
+for my $c (@cases) {
+    my ($label, $input, $expect) = @$c;
+    my $req = CPAN::Meta::Requirements->new();
+    $req->add_minimum('Foo::Baz' => $input );
+    is( $req->requirements_for_module('Foo::Baz'), $expect, $label );
+}
+
+
+done_testing;
diff --git a/xt/author/00-compile.t b/xt/author/00-compile.t
new file mode 100644
index 0000000..b89f20b
--- /dev/null
+++ b/xt/author/00-compile.t
@@ -0,0 +1,57 @@
+use 5.006;
+use strict;
+use warnings;
+
+# this test was generated with Dist::Zilla::Plugin::Test::Compile 2.054
+
+use Test::More;
+
+plan tests => 2;
+
+my @module_files = (
+    'CPAN/Meta/Requirements.pm'
+);
+
+
+
+# fake home for cpan-testers
+use File::Temp;
+local $ENV{HOME} = File::Temp::tempdir( CLEANUP => 1 );
+
+
+my $inc_switch = -d 'blib' ? '-Mblib' : '-Ilib';
+
+use File::Spec;
+use IPC::Open3;
+use IO::Handle;
+
+open my $stdin, '<', File::Spec->devnull or die "can't open devnull: $!";
+
+my @warnings;
+for my $lib (@module_files)
+{
+    # see L<perlfaq8/How can I capture STDERR from an external command?>
+    my $stderr = IO::Handle->new;
+
+    my $pid = open3($stdin, '>&STDERR', $stderr, $^X, $inc_switch, '-e', "require q[$lib]");
+    binmode $stderr, ':crlf' if $^O eq 'MSWin32';
+    my @_warnings = <$stderr>;
+    waitpid($pid, 0);
+    is($?, 0, "$lib loaded ok");
+
+    shift @_warnings if @_warnings and $_warnings[0] =~ /^Using .*\bblib/
+        and not eval { require blib; blib->VERSION('1.01') };
+
+    if (@_warnings)
+    {
+        warn @_warnings;
+        push @warnings, @_warnings;
+    }
+}
+
+
+
+is(scalar(@warnings), 0, 'no warnings found')
+    or diag 'got warnings: ', ( Test::More->can('explain') ? Test::More::explain(\@warnings) : join("\n", '', @warnings) );
+
+
diff --git a/xt/author/critic.t b/xt/author/critic.t
new file mode 100644
index 0000000..d5b4c96
--- /dev/null
+++ b/xt/author/critic.t
@@ -0,0 +1,12 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More;
+use English qw(-no_match_vars);
+
+eval "use Test::Perl::Critic";
+plan skip_all => 'Test::Perl::Critic required to criticise code' if $@;
+Test::Perl::Critic->import( -profile => "perlcritic.rc" ) if -e "perlcritic.rc";
+all_critic_ok();
diff --git a/xt/author/pod-coverage.t b/xt/author/pod-coverage.t
new file mode 100644
index 0000000..66b3b64
--- /dev/null
+++ b/xt/author/pod-coverage.t
@@ -0,0 +1,7 @@
+#!perl
+# This file was automatically generated by Dist::Zilla::Plugin::PodCoverageTests.
+
+use Test::Pod::Coverage 1.08;
+use Pod::Coverage::TrustPod;
+
+all_pod_coverage_ok({ coverage_class => 'Pod::Coverage::TrustPod' });
diff --git a/xt/author/pod-spell.t b/xt/author/pod-spell.t
new file mode 100644
index 0000000..eedaad0
--- /dev/null
+++ b/xt/author/pod-spell.t
@@ -0,0 +1,35 @@
+use strict;
+use warnings;
+use Test::More;
+
+# generated by Dist::Zilla::Plugin::Test::PodSpelling 2.007000
+use Test::Spelling 0.12;
+use Pod::Wordlist;
+
+
+add_stopwords(<DATA>);
+all_pod_files_spelling_ok( qw( bin lib  ) );
+__DATA__
+invocant
+dist
+David
+Golden
+dagolden
+Ricardo
+Signes
+rjbs
+and
+Ed
+mohawk2
+Karen
+Etheridge
+ether
+Leon
+Timmermans
+fawaka
+robario
+webmaster
+lib
+CPAN
+Meta
+Requirements
diff --git a/xt/author/pod-syntax.t b/xt/author/pod-syntax.t
new file mode 100644
index 0000000..e563e5d
--- /dev/null
+++ b/xt/author/pod-syntax.t
@@ -0,0 +1,7 @@
+#!perl
+# This file was automatically generated by Dist::Zilla::Plugin::PodSyntaxTests.
+use strict; use warnings;
+use Test::More;
+use Test::Pod 1.41;
+
+all_pod_files_ok();
diff --git a/xt/author/test-version.t b/xt/author/test-version.t
new file mode 100644
index 0000000..204eaf8
--- /dev/null
+++ b/xt/author/test-version.t
@@ -0,0 +1,24 @@
+use strict;
+use warnings;
+use Test::More;
+
+# generated by Dist::Zilla::Plugin::Test::Version 1.05
+use Test::Version;
+
+my @imports = qw( version_all_ok );
+
+my $params = {
+    is_strict      => 0,
+    has_version    => 1,
+    multiple       => 0,
+
+};
+
+push @imports, $params
+    if version->parse( $Test::Version::VERSION ) >= version->parse('1.002');
+
+
+Test::Version->import(@imports);
+
+version_all_ok;
+done_testing;
diff --git a/xt/release/distmeta.t b/xt/release/distmeta.t
new file mode 100644
index 0000000..c2280dc
--- /dev/null
+++ b/xt/release/distmeta.t
@@ -0,0 +1,6 @@
+#!perl
+# This file was automatically generated by Dist::Zilla::Plugin::MetaTests.
+
+use Test::CPAN::Meta;
+
+meta_yaml_ok();
diff --git a/xt/release/minimum-version.t b/xt/release/minimum-version.t
new file mode 100644
index 0000000..c3f95dd
--- /dev/null
+++ b/xt/release/minimum-version.t
@@ -0,0 +1,8 @@
+#!perl
+
+use Test::More;
+
+eval "use Test::MinimumVersion";
+plan skip_all => "Test::MinimumVersion required for testing minimum versions"
+  if $@;
+all_minimum_version_ok( qq{5.006} );
diff --git a/xt/release/portability.t b/xt/release/portability.t
new file mode 100644
index 0000000..58dbc20
--- /dev/null
+++ b/xt/release/portability.t
@@ -0,0 +1,12 @@
+#!perl
+
+use strict;
+use warnings;
+
+use Test::More;
+
+eval 'use Test::Portability::Files';
+plan skip_all => 'Test::Portability::Files required for testing portability'
+    if $@;
+options(test_one_dot => 0);
+run_tests();