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provision: Make sure the correct version of pip is installed.

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pip 8.0+ is required to successfully run the script (otherwise, the prefix
option doesn't work). pip 9.0+ is installed because of the safety features.
This commit is contained in:
Alena Volkova 2017-09-28 15:08:42 -04:00 committed by Tim Abbott
parent e1def40edc
commit c3a213269f
1 changed files with 5 additions and 2 deletions
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7
tools/provision
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@ -57,8 +57,11 @@ the Python version this command is executed with."""
# the venv's Python interpreter. `--prefix venv_dir` ensures that all modules are installed
# in the right place.
def install_dependencies(requirements_filename):
if subprocess.call([os.path.join(venv_dir, venv_exec_dir, 'pip'),
'install', '--prefix', venv_dir, '-r', os.path.join(base_dir, requirements_filename)]):
pip_path = os.path.join(venv_dir, venv_exec_dir, 'pip')
# We first install a modern version of pip that supports --prefix
subprocess.call([pip_path, 'install', 'pip>=9.0'])
if subprocess.call([pip_path, 'install', '--prefix', venv_dir, '-r',
os.path.join(base_dir, requirements_filename)]):
raise OSError("The command `pip install -r {}` failed. Dependencies not installed!"
.format(os.path.join(base_dir, requirements_filename)))