tests: look for ensurepip before using venv
Debian appears to cripple the venv module by default by
removing the associated ensurepip functionality. (The module
isn't present at all.) This caused test-install.t to fail when
using the Debian python3 unless the python3-venv package was
installed.
This commit introduces a new hghave requirement for detecting
ensurepip and makes the Python 3 install variant conditional on
its presence. This should make test-install.t pass when
using an incomplete Debian Python.
Differential Revision: https://phab.mercurial-scm.org/D7228
--- a/tests/hghave.py Thu Oct 17 16:46:13 2019 -0400
+++ b/tests/hghave.py Mon Nov 04 23:42:18 2019 -0800
@@ -829,6 +829,17 @@
return os.path.exists('/dev/full')
+@check("ensurepip", "ensurepip module")
+def has_ensurepip():
+ try:
+ import ensurepip
+
+ ensurepip.bootstrap
+ return True
+ except ImportError:
+ return False
+
+
@check("virtualenv", "Python virtualenv support")
def has_virtualenv():
try:
--- a/tests/test-install.t Thu Oct 17 16:46:13 2019 -0400
+++ b/tests/test-install.t Mon Nov 04 23:42:18 2019 -0800
@@ -241,12 +241,15 @@
shell environment in order to make the virtualenv work reliably.
On Python 3, we use the venv module, which is part of the standard library.
+But some Linux distros strip out this module's functionality involving pip,
+so we have to look for the ensurepip module, which these distros strip out
+completely.
On Python 2, we use the 3rd party virtualenv module, if available.
$ cd $TESTTMP
$ unset PYTHONPATH
-#if py3
+#if py3 ensurepip
$ "$PYTHON" -m venv installenv >> pip.log
Note: we use this weird path to run pip and hg to avoid platform differences,