debian package: symlink to python-3.X (#4433)

In the debian package, make the virtualenv symlink python to /usr/bin/python3.X
rather than /usr/bin/python3. Also make sure we depend on the right python3.x
package.

This might help a bit with subtle failures when people install a package from
the wrong distro (https://github.com/matrix-org/synapse/issues/4431).
This commit is contained in:
Richard van der Hoff 2019-01-23 11:43:04 +00:00 committed by GitHub
parent 90743c9d89
commit 2f88881c93
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3 changed files with 16 additions and 2 deletions

1
changelog.d/4433.misc Normal file
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@ -0,0 +1 @@
debian package: symlink to explicit python version

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@ -6,7 +6,16 @@
set -e
export DH_VIRTUALENV_INSTALL_ROOT=/opt/venvs
SNAKE=/usr/bin/python3
# make sure that the virtualenv links to the specific version of python, by
# dereferencing the python3 symlink.
#
# Otherwise, if somebody tries to install (say) the stretch package on buster,
# they will get a confusing error about "No module named 'synapse'", because
# python won't look in the right directory. At least this way, the error will
# be a *bit* more obvious.
#
SNAKE=`readlink -e /usr/bin/python3`
# try to set the CFLAGS so any compiled C extensions are compiled with the most
# generic as possible x64 instructions, so that compiling it on a new Intel chip
@ -46,3 +55,7 @@ cp -r tests "$tmpdir"
PYTHONPATH="$tmpdir" \
debian/matrix-synapse-py3/opt/venvs/matrix-synapse/bin/python \
-B -m twisted.trial --reporter=text -j2 tests
# add a dependency on the right version of python to substvars.
PYPKG=`basename $SNAKE`
echo "synapse:pydepends=$PYPKG" >> debian/matrix-synapse-py3.substvars

2
debian/control vendored
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@ -27,8 +27,8 @@ Depends:
adduser,
debconf,
python3-distutils|libpython3-stdlib (<< 3.6),
python3,
${misc:Depends},
${synapse:pydepends},
# some of our scripts use perl, but none of them are important,
# so we put perl:Depends in Suggests rather than Depends.
Suggests: