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pyperformance/dev.py /
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| # A script for running pyperformance out of the repo in dev-mode. | |
| import os.path | |
| import sys | |
| REPO_ROOT = os.path.dirname(os.path.abspath(__file__)) | |
| VENVS = os.path.join(REPO_ROOT, '.venvs') | |
| def resolve_venv_root(kind='dev', venvsdir=VENVS): | |
| import sysconfig | |
| if sysconfig.is_python_build(): | |
| sys.exit('please install your built Python first (or pass it using --python)') | |
| # XXX Handle other implementations too? | |
| base = os.path.join(venvsdir, kind or 'dev') | |
| major, minor = sys.version_info[:2] | |
| pyloc = ((os.path.abspath(sys.executable) | |
| ).partition(os.path.sep)[2].lstrip(os.path.sep) | |
| ).replace(os.path.sep, '-') | |
| return f'{base}-{major}.{minor}-{pyloc}' | |
| def ensure_venv_ready(venvroot=None, kind='dev', venvsdir=VENVS): | |
| if sys.prefix != sys.base_prefix: | |
| assert os.path.exists(os.path.join(sys.prefix, 'pyvenv.cfg')) | |
| venvroot = sys.prefix | |
| python = sys.executable | |
| readyfile = os.path.join(sys.prefix, 'READY') | |
| isready = os.path.exists(readyfile) | |
| else: | |
| import venv | |
| if not venvroot: | |
| venvroot = resolve_venv_root(kind, venvsdir) | |
| # Make sure the venv exists. | |
| readyfile = os.path.join(venvroot, 'READY') | |
| isready = os.path.exists(readyfile) | |
| if not isready: | |
| relroot = os.path.relpath(venvroot) | |
| if not os.path.exists(venvroot): | |
| print(f'creating venv at {relroot}...') | |
| else: | |
| print(f'venv {relroot} not ready, re-creating...') | |
| venv.create(venvroot, with_pip=True, clear=True) | |
| else: | |
| assert os.path.exists(os.path.join(venvroot, 'pyvenv.cfg')) | |
| # Return the venv's Python executable. | |
| binname = 'Scripts' if os.name == 'nt' else 'bin' | |
| exename = os.path.basename(sys.executable) | |
| python = os.path.join(venvroot, binname, exename) | |
| # Now make sure the venv has pyperformance installed. | |
| if not isready: | |
| import subprocess | |
| relroot = os.path.relpath(venvroot) | |
| print(f'venv {relroot} not ready, installing dependencies...') | |
| proc = subprocess.run( | |
| [python, '-m', 'pip', 'install', | |
| '--upgrade', | |
| '--editable', REPO_ROOT], | |
| ) | |
| if proc.returncode != 0: | |
| sys.exit('ERROR: install failed') | |
| with open(readyfile, 'w'): | |
| pass | |
| print('...venv {relroot} ready!') | |
| return venvroot, python | |
| def main(venvroot=None): | |
| _, python = ensure_venv_ready(venvroot) | |
| if python != sys.executable: | |
| # Now re-run using the venv. | |
| os.execv(python, [python, *sys.argv]) | |
| # <unreachable> | |
| # Now run pyperformance. | |
| import pyperformance.cli | |
| pyperformance.cli.main() | |
| if __name__ == '__main__': | |
| main() |