Dear Maintainer, This may well turn out to be a cdbs bug in the end, but uwsgi does not build when pysupport -r returns more than one version: https://launchpadlibrarian.net/323025281/buildlog_ubuntu-artful-amd64.uwsgi_2.0.15-1ubuntu3_BUILDING.txt.gz Picking out the failing lines: *** asyncio_python27 plugin built and available in ./asyncio_python27_plugin.so *** touch debian/stamp-uwsgi-plugin-asyncio-python debian/rules:452: *** no python implementation resolved from flavor "python3.6" among packages python-uwsgidecorators python3-uwsgidecorators. Stop. In this build python 3.5 is the default and python 3.6 is supported. In a build where python 3.6 is default and python 3.5 is supported, the error complains about python 3.5 instead. And if python 3.6 is the only supported version, the build completes successfully. So I think this is really a problem in uwsgi or cdbs' handling of multiple supported python versions. I tried to debug a bit but just got very very confused. Cheers, mwh
./asyncio_python27_plugin.so *** "python3.6" among packages python-uwsgidecorators python3-uwsgidecorators. Stop. build the or We now have this in Debian, so bumping to serious. Scott K
Quoting Scott Kitterman (2017-06-30 08:25:19) Thanks, both for reporting initially and for bumping! - Jonas
It looks like a cdbs issue to me, $(call cdbs_expand_pythonruntime,,python3.6) breaks while $(call cdbs_expand_pythonruntime,,python3.5) works (and results in "python3" as expected.) A workaround that seems to help is putting X-Python3-Version: 3.5 in the Source paragraph of debian/control to prevent it from trying 3.6 at all. This makes the build work for me (but doesn't help the python3.6 transition of course.) This is the worst blocker for the Perl 5.26 transition too (uwsgi needs to be rebuilt because uwsgi-plugin-psgi links against libperl), so even a temporary ugly workaround would be appreciated from this side :)
Changing the python3-all-dev build-depends to python3-dev would accomplish the same thing while allowing a binNMU to work when we make python3.6 default. Since this is blocking your work, I would recommend you NMU with that change (I have forgotten approximately everything I ever new about CDBS, so I don't mess with CDBS packages if I can possibly avoid it - I don't plan to do this NMU). Scott K
Thanks, that's indeed even better! I guess we'll look at an NMU soonish (unless Jonas wants to handle this?)
Jonas, do you have time for an upload? This is more or less the last blocker for the perl 5.26 transition which probably starts later this week. I'm also happy to do an NMU with the change Scott proposed. Cheers, gregor
Quoting gregor herrmann (2017-07-17 20:30:01) (via Iceland for a little week) in a few days, so am swamped with tasks. Sorry for not reporting back here earlier. - Jonas ¹ I will be doing Debian-related packaging work at https://puri.sm/
No worries, and thanks for the quick reply to my mail! I'll look at the package. Congratulations :) Cheers, gregor
I'm afraid this doesn't help. With the change in Build-Depends from
python3-all-dev to python3-dev, the build still ends with:
*** asyncio_python27 plugin built and available in ./asyncio_python27_plugin.so ***
touch debian/stamp-uwsgi-plugin-asyncio-python
debian/rules:452: *** no python implementation resolved from flavor "python3.6" among packages python-uwsgidecorators python3-uwsgidecorators. Stop.
dpkg-buildpackage: error: debian/rules build gave error exit status 2
The build log doesn't show anything about python3.6 packages.
From the log:
set -e; \
sed -e 's/@@pkg_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_name@@/python3/g' -e 's/@@plugin_stem@@/python/g' -e 's/@@plugin_alternatives_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_alternatives_stem@@/python3/g' -e 's/@@plugin_alternatives_priority@@/35/g' -e 's/@@plugin_lang_kind@@/python3/g' -e 's/@@plugin_flavors_dotless@@/python36 python35/g' -e 's/@@plugin_defaultflavor_dotless@@/python35/g' < debian/uwsgi-plugin-__PLUGIN__.rtupdate.in.pri-py > debian/uwsgi-plugin-python3.rtupdate; sed -e 's/@@pkg_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_name@@/python3/g' -e 's/@@plugin_stem@@/python/g' -e 's/@@plugin_alternatives_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_alternatives_stem@@/python3/g' -e 's/@@plugin_alternatives_priority@@/35/g' -e 's/@@plugin_lang_kind@@/python3/g' -e 's/@@plugin_flavors_dotless@@/python36 python35/g' -e 's/@@plugin_defaultflavor_dotless@@/python35/g' < debian/uwsgi-plugin-__PLUGIN__.dirs.in.python > debian/uwsgi-plugin-python3.dirs; sed -e 's/@@pkg_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_name@@/python3/g' -e 's/@@plugin_stem@@/python/g' -e 's/@@plugin_alternatives_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_alternatives_stem@@/python3/g' -e 's/@@plugin_alternatives_priority@@/35/g' -e 's/@@plugin_lang_kind@@/python3/g' -e 's/@@plugin_flavors_dotless@@/python36 python35/g' -e 's/@@plugin_defaultflavor_dotless@@/python35/g' < debian/uwsgi-plugin-__PLUGIN__.prerm.in.pri-py > debian/uwsgi-plugin-python3.prerm; sed -e 's/@@pkg_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_name@@/python3/g' -e 's/@@plugin_stem@@/python/g' -e 's/@@plugin_alternatives_name@@/uwsgi-plugin-python3/g' -e 's/@@plugin_alternatives_stem@@/python3/g' -e 's/@@plugin_alternatives_priority@@/35/g' -e 's/@@plugin_lang_kind@@/python3/g' -e 's/@@plugin_flavors_dotless@@/python36 python35/g' -e 's/@@plugin_defaultflavor_dotless@@/python35/g' < debian/uwsgi-plugin-__PLUGIN__.postinst.in.pri-py > debian/uwsgi-plugin-python3.postinst; sed -e "s/@@plugin_name@@/python36/g" < debian/uwsgi-plugin-__PLUGIN__.install.in >> debian/uwsgi-plugin-python3.install; sed -e "s/@@plugin_name@@/python36/g" < debian/uwsgi-plugin-__PLUGIN__.links.in >> debian/uwsgi-plugin-python3.links; sed -e "s/@@plugin_name@@/python36/g" < debian/uwsgi-plugin-__PLUGIN__.manpages.in >> debian/uwsgi-plugin-python3.manpages; sed -e "s/@@plugin_name@@/python35/g" < debian/uwsgi-plugin-__PLUGIN__.install.in >> debian/uwsgi-plugin-python3.install; sed -e "s/@@plugin_name@@/python35/g" < debian/uwsgi-plugin-__PLUGIN__.links.in >> debian/uwsgi-plugin-python3.links; sed -e "s/@@plugin_name@@/python35/g" < debian/uwsgi-plugin-__PLUGIN__.manpages.in >> debian/uwsgi-plugin-python3.manpages; chmod 755 debian/uwsgi-plugin-python3.rtupdate; echo "debian/uwsgi-plugin-python3.rtupdate usr/share/python3/runtime.d" >> debian/uwsgi-plugin-python3.install
touch debian/expand-files/uwsgi-plugin-python3
(Note the "python36" parts.)
Looking through the not ultra-short debian/rules, it seems that
$(plugin_flavors) still contains something python3.6ish, and then we
are at the expansion that Niko already found:
$(if $(filter python,$(plugin_lang)),\
$(foreach flavor,$(plugin_flavors),\
$(UWSGI_ENV) $(call cdbs_expand_pythonruntime,,$(flavor)) \
$(UWSGI_BUILDER) \
--plugin plugins/$(plugin_src) \
debian/buildconf/uwsgi-plugin.ini \
$(plugin_flavor_prefix)$(subst .,,$(flavor));),\
$(UWSGI_ENV) $(cdbs_python2_defaultruntime) $(UWSGI_BUILDER) \
--plugin plugins/$(plugin_src) \
debian/buildconf/uwsgi-plugin.ini \
$(plugin_name))
So, both with python3-dev (i.e. no python3.6 around) and with
python3-all-dev (with python3.6 installed), '$(call
cdbs_expand_pythonruntime,,python3.6)' fails. Hm.
If someone is into makefile magic:
# runtime to use
# resolve from implicit singleflavor or optional binary package or optional (favored) flavor
# 1. provided binary package arch-indep: cdbs_$python_defaultruntime
# 2. default flavor: cdbs_$python_defaultruntime
# 3. name of flavor
cdbs_expand_pythonruntime = $(or $(strip \
$(if $(filter $1,$(cdbs_python_indep_packages)),\
$(cdbs_$(call _cdbs_expand_python,$1)_defaultruntime))),$(strip \
$(foreach f,$(or $(strip \
$2),$(strip \
$(if $1,$(call _cdbs_expand_pythonflavors,$1))),$(strip \
$(if word 2,$(cdbs_flavors),\
$(error Too many flavors: $(cdbs_flavors)),\
$(cdbs_flavors)))),\
$(foreach p,$(call _cdbs_expand_pythonflavor2python,$f),$(or $(strip \
$(if $(filter $f,$(cdbs_$p_defaultflavor)),\
$(cdbs_$p_defaultruntime))),$(strip \
$f),\
$(error no python runtime resolved \
from binary package "$1" and flavor "$2"))))))
(from /usr/share/cdbs/1/class/python-vars.mk)
So it looks like the cdbs python module finds a python3.6 "flavor"
(from py3versions) but no runtime for it.
Ultimately, this looks like a cdbs problem to me. Maybe we can find a
bandaid for uwsgi for now to tell d/rules to use only one python3
flavour or to not bail out of the python3.6 runtime is not detected.
Cheers,
gregor
In that case, your X-Python3-Version hack is probably the best way to get the Perl transition done. It'll be another RC bug against UWSGI once python3.6 is default, but I don't expect that soon. Scott K
Control: clone -1 -2
Control: reassign -2 cdbs
Control: retitle -2 cdbs: python helper finds python3.5 und python3.6 but no runtime for python3.6
Control: severity -2 important
Control: affects -2 src:uwsgi
(Cloning a separate bug for this issue.)
Indeed, adding 'X-Python3-Version: 3.5' to debian/control's source
stanza helps. (As already mentioned by Niko earlier.)
What also seems to work is the following workaround in debian/rules:
diff -Nru uwsgi-2.0.15/debian/rules uwsgi-2.0.15/debian/rules
--- uwsgi-2.0.15/debian/rules 2017-02-20 11:40:46.000000000 +0100
+++ uwsgi-2.0.15/debian/rules 2017-07-18 08:55:03.000000000 +0200
@@ -259,9 +259,11 @@
plugin_lang_kind = $(strip \
$(if $(filter java python,$(plugin_lang)),\
$(lastword $(subst -, ,$(plugin_kind)))))
-plugin_flavors = $(strip \
- $(if $(filter python,$(plugin_lang)),\
- $(cdbs_$(plugin_lang_kind:python=python2)_allflavors)))
+#workaround, cf. #865224
+#plugin_flavors = $(strip \
+# $(if $(filter python,$(plugin_lang)),\
+# $(cdbs_$(plugin_lang_kind:python=python2)_allflavors)))
+plugin_flavors = $(plugin_defaultflavor)
plugin_defaultflavor = $(strip \
$(if $(filter python,$(plugin_lang)),\
$(cdbs_$(plugin_lang_kind:python=python2)_defaultflavor)))
Then $(flavor) is later on only set to the default python versions,
i.e. python2.7 and python3.5 (tested with a strategic "echo" in one
of the loops), and the build succeeds. In practice this should brings
us back to the situation before python3.6 was added as a supported
python version in python3-defaults in June.
Maybe that's a bit less invasive and a bit more binNMU friendly than
hardcoding 'X-Python3-Version: 3.5'?
Cheers,
gregor
It looks like something similar has already been discussed in the past: #606530 Cheers, gregor
We believe that the bug you reported is fixed in the latest version of
uwsgi, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 868752@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Jonas Smedegaard <dr@jones.dk> (supplier of updated uwsgi package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sat, 25 Jan 2025 20:27:36 +0100
Source: uwsgi
Architecture: source
Version: 2.0.28-2
Distribution: unstable
Urgency: medium
Maintainer: uWSGI packaging team <pkg-uwsgi-devel@lists.alioth.debian.org>
Changed-By: Jonas Smedegaard <dr@jones.dk>
Closes: 868752 1069875 1088393 1092756 1093818
Changes:
uwsgi (2.0.28-2) unstable; urgency=medium
.
[ Alexandre Rossi ]
* stop build-depend on dh-buildinfo;
closes: bug#1088393
* add 1007_fix_php_pypy_tests.patch
* stop build or provide plugins now built externally:
gccgo glusterfs java lua psgi python rados ruby;
closes: bug#868752, #1069875, #1092756, #1093818
* stop build useless binary uwsgi-core-local
.
[ Jonas Smedegaard ]
* simplify long description slightly,
to mention less details for separately built packages
* update copyright info:
+ use field Reference
+ update coverage
* have binary package uwsgi-app-integration-plugins depend on
new separately built uwsgi-plugin-pypy3
* drop done or externalized TODOs
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We believe that the bug you reported is fixed in the latest version of
cdbs, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 868752@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Alexandre Detiste <tchet@debian.org> (supplier of updated cdbs package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Sun, 31 Aug 2025 12:32:38 +0200
Source: cdbs
Architecture: source
Version: 0.4.176
Distribution: unstable
Urgency: medium
Maintainer: Debian QA Group <packages@qa.debian.org>
Changed-By: Alexandre Detiste <tchet@debian.org>
Closes: 430571 529284 565974 574791 587373 606217 606530 868752
Changes:
cdbs (0.4.176) unstable; urgency=medium
.
* QA upload.
* Remove python distutils support
(Closes: #868752, #606530, #529284, #587373,
#430571, #574791, #606217, #565974)
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