Piotr Ożarowski <pi...@debian.org> writes: > PS while converting [from use of ‘python-central’ to use of > ‘python-support’], remember to add to preinst something like these 3 > lines: > > | if [ "$1" = upgrade ] && dpkg --compare-versions "$2" lt 1.2.3-4; then > | pycentral pkgremove python-foo > | fi
As noted elsewhere, this is to overcome behaviour (discussed in <URL:http://bugs.debian.org/479852>) that is the default for ‘dh_pycentral’: “create symlinks on postinst, don't clean up on prerm”. Because it is the default, this likely plagues a significant portion of ‘python-central’-based packages already installed out there. The approaches suggested in the ‘dh_pycentral(1)’ manpage are: This can be disabled by setting the environment varibale DH_PYCENTRAL to a string containing the string noprepare. If the newer version of a package needs to remove the symlinked files on upgrade, either the package needs to take care of the removal by calling pycentrel pkgremove in the new preinst, or leaving a file /var/lib/pycentral/<package>.pkgremove and using pycentral 0.6.7 or later for the old package version. I, like Piotr, am now preparing to migrate my Python packages to use ‘python-support’ (once the new version that stops using ‘/var/lib/’ hits ‘testing’). What is my best approach for preparing to do this? As I see it, the existing documentation suggests one of: * Leave the package for now depending on ‘python-central’, set ‘DH_PYCENTRAL = noprepare’ in my existing packages's ‘debian/rules’, then build and upload a new release; or * Migrate the package immediately to use ‘python-support’, put the call to ‘pycentral pkgremove foopackage’ in ‘preinst’ as shown above by Piotr, then build and upload a new release; or * Migrate the package immediately to use ‘python-support’, create an empty ‘${DESTDIR}/var/lib/pycentral/foopackage.pkgremove’, then build and upload a new release; or * Something else (please specify). Which of the above is best in general? What reasons would I have for not doing the same thing to every affected package? How long should I leave these measures in place before removing all mention of ‘python-central’ from a new release? -- \ “When I get new information, I change my position. What, sir, | `\ do you do with new information?” —John Maynard Keynes | _o__) | Ben Finney -- To UNSUBSCRIBE, email to debian-python-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
