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Adding the bin/ directory of the virtualenv (if you specify a virtualenv) as a path_prefix so that other programs that only exist in the virtualenv will be available to things being installed into said virtualenv. Classic example: installing gevent requires cython binary to be available, but if cython is in the virtualenv only it won't be found without this.

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This commit is contained in:
Jeremy Price 2013-10-09 12:50:18 -04:00
parent 9da5043f18
commit 3955b8e9c2
1 changed files with 11 additions and 1 deletions
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12
library/packaging/pip
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@ -234,6 +234,16 @@ def main():
pip = _get_pip(module, env)
cmd = '%s %s' % (pip, state_map[state])
# If there's a virtualenv we want things we install to be able to use other
# installations that exist as binaries within this virtualenv. Example: we
# install cython and then gevent -- gevent needs to use the cython binary,
# not just a python package that will be found by calling the right python.
# So if there's a virtualenv, we add that bin/ to the beginning of the PATH
# in run_command by setting path_prefix here.
path_prefix = None
if env:
path_prefix="/".join(pip.split('/')[:-1])
if extra_args:
cmd += ' %s' % extra_args
@ -279,7 +289,7 @@ def main():
os.chdir(tempfile.gettempdir())
if chdir:
os.chdir(chdir)
rc, out_pip, err_pip = module.run_command(cmd)
rc, out_pip, err_pip = module.run_command(cmd, path_prefix=path_prefix)
out += out_pip
err += err_pip
if rc == 1 and state == 'absent' and 'not installed' in out_pip: