scripts: sphinx-pre-install: fix a bug when using with venv

When python3 creates a venv, it adds python into it!

This causes any upgrade recommendation to look like this:

	/devel/v4l/docs/sphinx_1.7.9/bin/python3 -m venv sphinx_2.4.4
	. sphinx_2.4.4/bin/activate
	pip install -r ./Documentation/sphinx/requirements.txt

With is wrong (and it may not work). So, when recomending
an upgrade, exclude the venv dir from the search path, and
get the system's python.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Link: https://lore.kernel.org/r/aa622ff71bebf6960fc0262fb90e7ebc7a999a02.1587478901.git.mchehab+huawei@kernel.org
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Mauro Carvalho Chehab 2020-04-21 16:31:08 +02:00 committed by Jonathan Corbet
parent 2834a7412b
commit 412b09ddad

View File

@ -148,6 +148,24 @@ sub findprog($)
}
}
sub find_python_no_venv()
{
my $prog = shift;
my $cur_dir = qx(pwd);
$cur_dir =~ s/\s+$//;
foreach my $dir (split(/:/, $ENV{PATH})) {
next if ($dir =~ m,($cur_dir)/sphinx,);
return "$dir/python3" if(-x "$dir/python3");
}
foreach my $dir (split(/:/, $ENV{PATH})) {
next if ($dir =~ m,($cur_dir)/sphinx,);
return "$dir/python" if(-x "$dir/python");
}
return "python";
}
sub check_program($$)
{
my $prog = shift;
@ -814,6 +832,8 @@ sub check_needs()
print "To upgrade Sphinx, use:\n\n" if ($rec_sphinx_upgrade);
$python_cmd = find_python_no_venv();
if ($need_venv) {
printf "\t$python_cmd -m venv $virtenv_dir\n";
} else {