Package: dh-python Version: 6.20250414 Severity: normal File: /usr/share/perl5/Debian/Debhelper/Buildsystem/pybuild.pm
Hi! I have been having trouble building backports of a package with setuptools-scm as a build-dep. lavamind eventually figured a hack out of this, which you can see here: https://gitlab.com/anarcat/asncounter/-/commit/5a5cbb3c5c78152af791da09c0230ec6818d16d0 which is essentially to add this to the debian/rules file: export SETUPTOOLS_SCM_PRETEND_VERSION=$(shell dpkg-parsechangelog -SVersion | sed -e 's/^[[:digit:]]*://' -e 's/[-].*//' -e 's/~git.*//' -e 's/~bpo.*//' -e 's/~/.0/' -e 's/+dfsg1//' -e 's/+ds1//' | head -n 1) ... to override the "pretend" version. Before that, the build would fail with: packaging.version.InvalidVersion: Invalid version: '0.7.0-bpo13+1' And, indeed, that is an invalid package version in Python: >>> from packaging import version >>> version.Version("0.7.0-bpo13+1") Traceback (most recent call last): File "<python-input-2>", line 1, in <module> version.Version("0.7.0-bpo13+1") ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^ File "/usr/lib/python3/dist-packages/packaging/version.py", line 202, in __init__ raise InvalidVersion(f"Invalid version: {version!r}") packaging.version.InvalidVersion: Invalid version: '0.7.0-bpo13+1' Normal Debian versions with dashes are okay, that said: >>> version.Version("0.7.0-1") <Version('0.7.0.post1')> I'm not sure what should be done to fix this. wRAR on #debian-python suggested I file this bug report, but also that the `+` could be replaced with a dash, but that doesn't work either: packaging.version.InvalidVersion: Invalid version: '0.7.0-bpo13-1' We *could* replace "bpo" with "pre" which would work and would even mean something somewhat similar: >>> version.Version("0.7.0-pre13-1") <Version('0.7.0rc13.post1')> >>> version.Version("0.7.0-pre13-1") < version.Version("0.7.0-1") True But really, as far as Python is concerned, I would just strip out any debian specific stuff and stay with the upstream version, in this case `0.7.0`. The full build log is available at: https://paste.lib3.net/lavamind/2026-09-29-xhBAI9DJyb8DNU2IHfJTDJLAQhw3qk9qzYWn5387UVg/stdin.txt And can be reproduced by trying to backport the 0.7.0-1 asncounter package without change. -- System Information: Debian Release: 13.7 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'stable'), (1, 'experimental'), (1, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 6.12.111+deb13-amd64 (SMP w/16 CPU threads; PREEMPT) Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages dh-python depends on: ii python3 3.13.5-1 dh-python recommends no packages. Versions of packages dh-python suggests: ii dpkg-dev 1.22.22 pn flit <none> ii libdpkg-perl 1.22.22 ii python3-build 1.2.2-2 ii python3-installer 0.7.0+dfsg1-3 ii python3-wheel 0.46.1-2 -- no debconf information
