Package: python3-minimal
Version: 3.5.1-4
A package marked "Multi-Arch: same" that distributes python modules and
makes use of dh-python will lead to the following crash when multiple
architectures are installed together:
Setting up gir1.2-ibus-1.0:i386 (1.5.11-1) ...
dpkg-query: error: --listfiles needs a valid package name but
'gir1.2-ibus-1.0' is not: ambiguous package name 'gir1.2-ibus-1.0' with
more than one installed instance
Use --help for help about querying packages.
Traceback (most recent call last):
File "/usr/bin/py3compile", line 290, in
main()
File "/usr/bin/py3compile", line 270, in main
options.force, options.optimize, e_patterns)
File "/usr/bin/py3compile", line 154, in compile
for fn, versions_to_compile in filter_files(files, e_patterns,
versions):
File "/usr/bin/py3compile", line 106, in filter_files
for fn in files:
File "/usr/share/python3/debpython/files.py", line 71, in filter_public
for fn in files:
File "/usr/share/python3/debpython/files.py", line 53, in from_package
raise Exception("cannot get content of %s" % package_name)
Exception: cannot get content of gir1.2-ibus-1.0
dpkg: error processing package gir1.2-ibus-1.0:i386 (--configure):
subprocess installed post-installation script returned error exit status 1
This is a result of invoking py3compile or py3clean on an ambiguously
specified package. dh-python can and should disambiguate the package by
specifying an architecture and I am submitting a patch to that effect.
However, I believe the correct behavior for py3clean and py3compile would
be to clean or compile only the packages uniquely provided by a given
instance of a package. This would ensure the correct behavior for python
modules that are distributed exclusively for a specific architecture, as
well as modules that are common to all architectures. I've attached a
patch that implements this behavior.
Additionally, in the case of an ambiguous package specification, this patch
will turn what is currently a severe failure requiring a human to repair
into
a minor redundancy that will go away over time as packages are built
against a newer dh-python that does not provide ambiguous package
specifications to
py3clean and py3compile.
This would solve or at least help alleviate the following bugs:
bug #770265
bug #810551
bug #812228
Please apply this patch.
=== modified file 'debian/changelog'
--- debian/changelog 2016-06-03 14:42:29 +
+++ debian/changelog 2016-09-18 07:15:37 +
@@ -1,3 +1,10 @@
+python3-defaults (3.5.1-4.1) UNRELEASED; urgency=medium
+
+ * Non-maintainer upload.
+ * Compiling/cleaning support for Multi-Arch:same.
+
+ -- Joe Crayne <oh.hello@gmail.com> Sun, 18 Sep 2016 03:14:34 -0400
+
python3-defaults (3.5.1-4) unstable; urgency=medium
* Bump standards version.
=== modified file 'debpython/files.py'
--- debpython/files.py 2013-07-14 12:09:52 +
+++ debpython/files.py 2016-09-18 06:53:34 +
@@ -44,7 +44,11 @@
def from_package(package_name, extensions=('.py',)):
-"""Generate *.py file names available in given package."""
+"""Generate *.py file names available in given package.
+
+This function is deprecated because it is not Multi-Arch aware.
+Use uniquely_from_package() instead.
+"""
extensions = tuple(extensions) # .endswith doesn't like list
process = Popen("/usr/bin/dpkg -L %s" % package_name,
shell=True, stdout=PIPE)
@@ -56,6 +60,56 @@
if line.endswith(extensions):
yield line
+def uniquely_from_package(package_name, extensions=('.py',)):
+"""Generate *.py file names uniquely provided by a given package.
+
+The given package should specify an architecture using dpkg's pkg:arch
+syntax. If other instances of the package are installed, the contents
+of those instances will be excluded, most likely causing the resulting
+list to be empty.
+
+In the case that the package is not uniquely specified due to the
+architecture being omited, an architecture will be chosen arbitrarily
+and no files will be excluded on non-uniqueness grounds. This behavior
+makes this function safe to call in the "don't care" scenario when all
+architecture varients provide the same *.py files and we don't care
+which one is selected.
+"""
+pkg,*arch = package_name.split(':')
+process = Popen("dpkg-query -f'${Architecture}\n' -W %s" % pkg,
+shell=True,stdout=PIPE)
+stdout, stderr = process.communicate()
+if process.returncode != 0:
+raise Exception("cannot determine installed architectures for %s" % pkg)
+stdout = str(stdout, 'utf-8')
+other_archs = list()
+for x in stdout.splitlines():
+if not x
