[Distutils] pre-release versioning problems with sdist, bdist_rpm, bdist_debian
greno at verizon.net
Fri Jan 9 02:12:19 CET 2009
When I create a set of distro packages for a specific distro, I need to
distribute both a tarball and a distro-specific package such as an RPM
or a deb archive. Some people like installing things from tarballs,
others like using the distro package manager. So I let them have it
both ways. We can generate the tarball using 'sdist' and generate the
distro-package with 'bdist_rpm', etc.
This all works great as long as we're talking final releases here:
4.9.0, 5.0.0. But, whenever you start to introduce pre-release
candidate versioning, eg: 5.0.0_rc2, then things unravel.
What I have been attempting to do, and is apparently is like trying to
find the holy grail, is to be able to generate both tarballs and
distro-packages for both pre-release candidates and final releases, that
exhibit the following behavior:
(version=5.0.0_rc1); (extracts a foo-5.0.0_rc1 directory; 'sdist'
requires version set like this so tarball name is unique and extract dir
distro-package (pre-release): foo-5.0.0-0_rc1.noarch.rpm
(version=5.0.0 and release=0_rc1)
distro-package (final release): foo-5.0.0-1.noarch.rpm
(version=5.0.0 and release=1); 'bdist_rpm' requires version and release
set like this so final release will update the pre-release candidate package
The problem is that there appears to be no way to get a coordinated
behavior between 'sdist' and 'bdist_rpm' as far as version and release
strings are concerned that will satisfy both tarballs and bdist packages.
'sdist' knows nothing about 'release' string so you are forced to put
the pre-release candidate information into the 'version' string' but as
soon as you do that then you break 'bdist' packaging. And to complicate
matters, the world seems to have settled for making pre-release
candidate version strings like '5.0.0_rc1' for many applications.
We have an application, foo-5.0.0, and we want to put out some
pre-release candidates for testing, so we set the version to "5.0.0_rc1"
We create the source distribution with:
$ python setup.py sdist
which creates a source archive, foo-5.0.0_rc1.tar.gz.
We extract this archive and 'cd' into the foo-5.0.0_rc1 directory and
create a built distribution with:
$ python setup.py bdist_rpm
which creates source and binary RPMS in the form:
So we think everything is fine. Everyone installs and tests using the
pre-release candidate and subsequent candidates but when you eventually
get to the final release, foo-5.0.0, and build your final release RPMS,
foo-5.0.0-1.noarch.rpm, you find that it will not update your last
pre-release candidate RPM, foo-5.0.0_rcX-1.noarch.rpm because it is not
I'm hoping there is some distutils guru that can tell me how to solve
this enigma or show me how to extend distutils to accomplish what is needed.
PS: In case anyone notices, yes, I posted a similar question yesterday
on the python list without much response, but the question really
belongs on this list.
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