[Distutils] Proposal for incorporating buildout-versions on buildout (Re: Better version pinning in buildout (buildout-versions))

Jim Fulton jim at zope.com
Sat Jan 12 17:18:36 CET 2013

On Sat, Jan 5, 2013 at 5:47 PM, Jim Fulton <jim at zope.com> wrote:
> I propose that buildout-versions get incorporated into
> buildout in the following way:

OK, proposal 1 wasn't accepted.  Here's another stab:

Proposal 2

1. The ``allow-picked-versions`` option gets a new allowed value of
   ``show``. if there are unpicked versions and this option is set to
   ``show``, then picked/unpinned versions are reported in a way
   suitable for copying into a versions section, presumably with the
   same format used by buildout-versions today.

2. New buildout option: ``update-versions-file``.  This takes a path
   (relative to buildout directory) of a file to update with any
   unpinned versions (in a manner roughly the same as
   buildout-versions does today).

3. New buildout option: ``python-version`` that restricts the Python
   version, with the same semantics as buildout-version provides now.

4. Change: develop eggs found in the buildout's develop-eggs directory
   will be used even if their version conflicts with a pinned version.

5. In buildout 2, The default value of the versions option will be
   "versions", rather than being unset. This will allow users to

      version = versions

   from their buildout section.

6. To make it a little easier to supply buildout versions on the
   command line, make buildout the default section for command-line
   options, so::




   would be allowed. (They are rejected now.)



Jim Fulton
Jerky is better than bacon! http://zo.pe/Kqm

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