Public bug reported:
Mailman's paths.py.in contains code to add the python site-packages dir to the path. This uses a hardcoded "lib" prefix:
# Include Python's site-packages directory. sitedir = os.path.join(sys.prefix, 'lib', 'python'+sys.version[:3], 'site-packages') sys.path.append(sitedir)
On 64 bit systems this is usually lib64 and some distros started removing the compatibility symlink lib->lib64 and split up lib and lib64 (e.g. latest Gentoo profiles). So relying on "lib" as a prefix is not compatible any more.
Python has a function getsitepackages in the site module and I believe it's best to rely on python knowing best where its directories are. It returns an array, so this would look like this: sitedirs = site.getsitepackages() for sitedir in sitedirs: sys.path.append(sitedir)
Patch attached, please apply.
** Affects: mailman Importance: Undecided Status: New
** Attachment added: "fix sitedir path on 64 bit filesystem layouts" https://bugs.launchpad.net/bugs/1838866/+attachment/5280705/+files/mailman-f...