dep_specs: Sequence[str],
online: bool = False,
wheels_dir: Optional[Union[str, Path]] = None,
-) -> None:
+ prog: Optional[str] = None,
+) -> Optional[Tuple[str, bool]]:
"""
Use pip to ensure we have the package specified by @dep_specs.
generate_console_scripts(present)
if absent:
- # Some packages are missing or aren't a suitable version,
- # install a suitable (possibly vendored) package.
- print(f"mkvenv: installing {', '.join(absent)}", file=sys.stderr)
- pip_install(args=absent, online=online, wheels_dir=wheels_dir)
+ if online or wheels_dir:
+ # Some packages are missing or aren't a suitable version,
+ # install a suitable (possibly vendored) package.
+ print(f"mkvenv: installing {', '.join(absent)}", file=sys.stderr)
+ try:
+ pip_install(args=absent, online=online, wheels_dir=wheels_dir)
+ return None
+ except subprocess.CalledProcessError:
+ pass
+
+ return diagnose(
+ absent[0],
+ online,
+ wheels_dir,
+ prog if absent[0] == dep_specs[0] else None,
+ )
+
+ return None
def ensure(
if not HAVE_DISTLIB:
raise Ouch("a usable distlib could not be found, please install it")
- try:
- _do_ensure(dep_specs, online, wheels_dir)
- except subprocess.CalledProcessError as exc:
+ result = _do_ensure(dep_specs, online, wheels_dir, prog)
+ if result:
# Well, that's not good.
- msg, bad = diagnose(dep_specs[0], online, wheels_dir, prog)
- if bad:
- raise Ouch(msg) from exc
- raise SystemExit(f"\n{msg}\n\n") from exc
+ if result[1]:
+ raise Ouch(result[0])
+ raise SystemExit(f"\n{result[0]}\n\n")
def post_venv_setup() -> None: