Package: python2.7
Version: 2.7.3~rc2-2.1
Severity: normal
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Dear Maintainer,
We have several cases where the multiarch triplet is needed for the
proper building or functioning of other Python modules or
applications. A recent example is virtualenv. In the debian-python
mailing list, several solutions for the virtualenv problem have been
discussed, but all of them are unsatisfying.
What we really need is an officially approved, common way of getting
the triplet, that doesn't require shelling out or globbing the file
system. When Python is built, it already knows (or can easily find
out) what the triplet should be, so it's best if we expose this in the
sys module.
Attached is a patch similar to one discussed on debian-python. It
exposes the triplet as `sys._architecture`. A similar patch will be
made available for Python 3.3, except that there, it will be avialable
under `sys.implementation._architecture` as per PEP 421. Bilingual
Python code can use:
>>> import sys
>>> getattr(sys, 'implementation', sys)._architecture
Cheers.
- -- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages python2.7 depends on:
ii libbz2-1.0 1.0.6-4
ii libc6 2.13-37
ii libdb5.1 5.1.29-5
ii libexpat1 2.1.0-1
ii libgcc1 1:4.7.2-4
ii libncursesw5 5.9-10
ii libreadline6 6.2-8
ii libsqlite3-0 3.7.13-1
ii libtinfo5 5.9-10
ii mime-support 3.52-1
ii python2.7-minimal 2.7.3~rc2-2.1
python2.7 recommends no packages.
Versions of packages python2.7 suggests:
ii binutils 2.22-7.1
pn python2.7-doc <none>
- -- no debconf information
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=== modified file 'debian/changelog'
--- debian/changelog 2012-12-10 19:10:32 +0000
+++ debian/changelog 2012-12-14 20:24:32 +0000
@@ -1,3 +1,10 @@
+python2.7 (2.7.3-13) experimental; urgency=low
+
+ * debian/patches/sys-implementation.diff: Expose multiarch triplet value
+ as sys._architecture.
+
+ -- Barry Warsaw <ba...@python.org> Fri, 14 Dec 2012 15:23:02 -0500
+
python2.7 (2.7.3-12) experimental; urgency=low
* Fix typo in pkgconfig file. Closes: #695671, LP: #1088988.
=== modified file 'debian/patches/series.in'
--- debian/patches/series.in 2012-12-10 16:06:41 +0000
+++ debian/patches/series.in 2012-12-14 20:24:32 +0000
@@ -66,3 +66,4 @@
lib2to3-no-pickled-grammar.diff
add-python-config-sh.diff
ssl.match_hostname.diff
+sys-implementation.diff
=== added file 'debian/patches/sys-implementation.diff'
--- debian/patches/sys-implementation.diff 1970-01-01 00:00:00 +0000
+++ debian/patches/sys-implementation.diff 2012-12-14 20:24:32 +0000
@@ -0,0 +1,60 @@
+--- a/configure.ac
++++ b/configure.ac
+@@ -24,6 +24,24 @@
+ prefix=`echo "$prefix" | sed -e 's/\/$//g'`
+ fi
+
++dnl Debian multiarch support in sys.implementation._architecture
++dnl Try `dpkg-architecture -qDEB_BUILD_MULTIARCH` first, then
++dnl `gcc --print-multiarch`.
++AC_SUBST(MULTIARCH_BUILD)
++AC_CHECK_PROG(HAS_DPKG_ARCHITECTURE, dpkg-architecture, found, not-found)
++if test $HAS_DPKG_ARCHITECTURE = found
++then
++ MULTIARCH_BUILD="dpkg-architecture -qDEB_BUILD_MULTIARCH"
++else
++ AC_CHECK_PROG(HAS_GCC_FOR_ARCH, gcc, found, not-found)
++ if test $HAS_GCC_FOR_ARCH = found
++ then
++ MULTIARCH_BUILD="gcc --print-multiarch"
++ else
++ MULTIARCH_BUILD=""
++ fi
++fi
++
+ dnl This is for stuff that absolutely must end up in pyconfig.h.
+ dnl Please use pyport.h instead, if possible.
+ AH_TOP([
+--- a/Makefile.pre.in
++++ b/Makefile.pre.in
+@@ -40,6 +40,7 @@
+ HGVERSION= @HGVERSION@
+ HGTAG= @HGTAG@
+ HGBRANCH= @HGBRANCH@
++MULTIARCH_BUILD= @MULTIARCH_BUILD@
+
+ GNULD= @GNULD@
+
+@@ -1304,6 +1305,11 @@
+
+ Python/thread.o: @THREADHEADERS@
+
++Python/sysmodule.o: $(srcdir)/Python/sysmodule.c Makefile
++ $(CC) -c $(PY_CORE_CFLAGS) \
++ -DMULTIARCH_BUILD="\"`LC_ALL=C $(MULTIARCH_BUILD)`\"" \
++ -o $@ $(srcdir)/Python/sysmodule.c
++
+ # Declare targets that aren't real files
+ .PHONY: all build_all sharedmods oldsharedmods test quicktest memtest
+ .PHONY: install altinstall oldsharedinstall bininstall altbininstall
+--- a/Python/sysmodule.c
++++ b/Python/sysmodule.c
+@@ -1435,6 +1435,8 @@
+ PyFloat_GetInfo());
+ SET_SYS_FROM_STRING("long_info",
+ PyLong_GetInfo());
++ SET_SYS_FROM_STRING("_architecture",
++ PyString_FromString(MULTIARCH_BUILD));
+ #ifdef Py_USING_UNICODE
+ SET_SYS_FROM_STRING("maxunicode",
+ PyInt_FromLong(PyUnicode_GetMax()));
