Package: libapache2-mod-wsgi-py3
Version: 4.3.0-1
Severity: serious
Tags: stretch sid
x-debbugs-cc: debian-pyt...@lists.debian.org
I run a derivative called raspbian and I noticed our auto-binnmuer was
repeatedly binnmuing mod-wsgi. Further investigation reveealed that
every time it was rebuilt it was getting dependencies like.
python3 (>= 3.5), python3 (<< 3.5)
Which is obviously unsatisfiable.
I was able to reproduce this with a manual test build in a Debian sid
environment.
Further investigation showed that the code in debian/rules assumed that
supported python3 versions would be listed from lowest to highest but
the current version of py3versions -vs always lists the default version
last. My memory tells me this was a recent behaviour change and that
would seem to fit with the fact that in Debian this package was
successfully binnmu'd to add python 3.5 support.
As a quick fix I added some commands to debian/rules to sort the list
before extracting the first and last entries and uploaded to Raspbian. A
debdiff is attached, no intent to NMU in Debian.
ccing debian-python for their opinion on
1: whether they were aware that this behaviour change could break packages
2: whether there is a better way to get the highest and lowest currently
supported python3 version.
diff -Nru mod-wsgi-4.3.0/debian/changelog mod-wsgi-4.3.0/debian/changelog
--- mod-wsgi-4.3.0/debian/changelog 2014-10-05 10:28:06.000000000 +0000
+++ mod-wsgi-4.3.0/debian/changelog 2015-11-18 05:22:24.000000000 +0000
@@ -1,3 +1,9 @@
+mod-wsgi (4.3.0-1+rpi1) stretch-staging; urgency=medium
+
+ * Sort python 3 versions to prevent generation of impossible dependencies.
+
+ -- Peter Michael Green <plugw...@raspbian.org> Wed, 18 Nov 2015 04:39:47
+0000
+
mod-wsgi (4.3.0-1) unstable; urgency=medium
[ Felix Geyer ]
diff -Nru mod-wsgi-4.3.0/debian/rules mod-wsgi-4.3.0/debian/rules
--- mod-wsgi-4.3.0/debian/rules 2014-10-05 10:19:11.000000000 +0000
+++ mod-wsgi-4.3.0/debian/rules 2015-11-18 05:25:03.000000000 +0000
@@ -7,7 +7,7 @@
PYDEFAULT=$(shell pyversions -dv)
PYMIN=$(shell echo $(PYVERS) | awk '{print $$1}')
PYMAX=$(shell echo $(PYVERS) | LANG=C awk '{print $$NF+0.1}')
-PY3VERS=$(shell py3versions -vs)
+PY3VERS=$(shell py3versions -vs | tr ' ' '\n' | sort -n | tr '\n' ' ' | paste
-s -d ' ')
PY3DEFAULT=$(shell py3versions -dv)
PY3MIN=$(shell echo $(PY3VERS) | awk '{print $$1}')
PY3MAX=$(shell echo $(PY3VERS) | LANG=C awk '{print $$NF+0.1}')
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