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Refactor helper function '_get_pip' to handle the cases where an absolute

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path explicit executable is passed to the task and to look for an explicit executable
by basename in a virtualenv if that is specified.
This commit is contained in:
Pedro Romano 2013-08-26 09:59:09 +01:00 committed by Michael DeHaan
parent 57a71043a3
commit 307dd77589
1 changed files with 28 additions and 20 deletions
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48
library/packaging/pip
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@ -153,26 +153,34 @@ def _get_full_name(name, version=None):
return resp return resp
def _get_pip(module, env, executable=None): def _get_pip(module, env=None, executable=None):
if executable is None: # On Debian and Ubuntu, pip is pip.
# Default pip executables. # On Fedora18 and up, pip is python-pip.
# On Debian and Ubuntu, pip is pip. # On Fedora17 and below, CentOS and RedHat 6 and 5, pip is pip-python.
# On Fedora18 and up, pip is python-pip. # On Fedora, CentOS, and RedHat, the exception is in the virtualenv.
# On Fedora17 and below, CentOS and RedHat 6 and 5, pip is pip-python. # There, pip is just pip.
# On Fedora, CentOS, and RedHat, the exception is in the virtualenv. candidate_pip_basenames = ['pip', 'python-pip', 'pip-python']
# There, pip is just pip. pip = None
# Try pip with the virtualenv directory first. if executable is not None:
pip = module.get_bin_path('pip', False, ['%s/bin' % env]) if os.path.isabs(executable):
for p in ['python-pip', 'pip-python']: pip = executable
if not pip: else:
pip = module.get_bin_path(p, False, ['%s/bin' % env]) candidate_pip_basenames.insert(0, executable)
# pip should have been found by now. The final call to get_bin_path if pip is None:
# will trigger fail_json. if env is None:
if not pip: opt_dirs = []
pip = module.get_bin_path('pip', True, ['%s/bin' % env]) else:
else: # Try pip with the virtualenv directory first.
# Explicit pip executable. opt_dirs = ['%s/bin' % env]
pip = module.get_bin_path(executable, True) for basename in candidate_pip_basenames:
pip = module.get_bin_path(basename, False, opt_dirs)
if pip is not None:
break
# pip should have been found by now. The final call to get_bin_path will
# trigger fail_json.
if pip is None:
basename = candidate_pip_basenames[0]
pip = module.get_bin_path(basename, True, opt_dirs)
return pip return pip