[MacPorts] #16373: svn git and hg fetch type should maintain a persistent working copy

[MacPorts]

#16373: svn git and hg fetch type should maintain a persistent working copy
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  Reporter:  ryandesign@…  |      Owner:  macports-tickets@…
      Type:  enhancement   |     Status:  new
  Priority:  Normal        |  Milestone:  MacPorts Future
 Component:  base          |    Version:  1.7.0
Resolution:                |   Keywords:  performance fetch
      Port:                |
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Comment (by mojca@…):

 Sure, keeping the whole repository (and cleaning it in case it turns out
 to be "broken" or changed in unexpected ways) would be the optimal
 solution, but the solution I was talking about would probably be a lot
 faster to implement: it would be similar to what the `GitHub PortGroup`
 does for example. It fetches a `.tar.gz` file from GitHub (even though it
 could clone the git repo) and calculates the checksums. If the checksum
 matches, all is well and a copy of that file gets mirrored on one of the
 MacPorts server.

 The solution I suggest would:
   * check if `${distfile}` exists
   * if not, clone the git repository and create a
 `${name.version}.tar.gz`/`${name.version}.tar.xz` of the desired
 branch/tag/version in `${distpath}`, delete the temporary git clone
   * verify the checksums, extract the contents as usual ...
 So something similar to what GitHub and BitBucket PortGroup already do
 (except that those fetch the distfiles from the server already).

 I mentioned this because I believe it would be relatively easy to
 implement and it would allow to keep a mirror of a particular version on
 the server.

-- 
Ticket URL: <https://trac.macports.org/ticket/16373#comment:11>
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