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Environments are now installed to version-specific locations. Resolves #229

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This commit is contained in:
Anthony Sottile 2015-05-16 19:16:23 -04:00
parent 154d918ff1
commit 45d4a195ef
9 changed files with 71 additions and 44 deletions
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15
pre_commit/languages/python.py
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@ -19,15 +19,15 @@ class PythonEnv(helpers.Environment):
def env_prefix(self):
return ". '{{prefix}}{0}activate' &&".format(
virtualenv.path_locations(
ENVIRONMENT_DIR,
helpers.environment_dir(ENVIRONMENT_DIR, self.language_version)
)[-1].rstrip(os.sep) + os.sep,
'activate',
)
@contextlib.contextmanager
def in_env(repo_cmd_runner):
yield PythonEnv(repo_cmd_runner)
def in_env(repo_cmd_runner, language_version):
yield PythonEnv(repo_cmd_runner, language_version)
def norm_version(version):
@ -41,20 +41,21 @@ def norm_version(version):
def install_environment(repo_cmd_runner, version='default'):
assert repo_cmd_runner.exists('setup.py')
directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
# Install a virtualenv
with clean_path_on_failure(repo_cmd_runner.path(ENVIRONMENT_DIR)):
with clean_path_on_failure(repo_cmd_runner.path(directory)):
venv_cmd = [
sys.executable, '-m', 'virtualenv',
'{{prefix}}{0}'.format(ENVIRONMENT_DIR)
'{{prefix}}{0}'.format(directory)
]
if version != 'default':
venv_cmd.extend(['-p', norm_version(version)])
repo_cmd_runner.run(venv_cmd)
with in_env(repo_cmd_runner) as env:
with in_env(repo_cmd_runner, version) as env:
env.run("cd '{prefix}' && pip install .")
def run_hook(repo_cmd_runner, hook, file_args):
with in_env(repo_cmd_runner) as env:
with in_env(repo_cmd_runner, hook['language_version']) as env:
return helpers.run_hook(env, hook, file_args)