Function determine_wellknown_cmd

contrib/devtools/utils.py:14–22

(envvar, progname)

def determine_wellknown_cmd(envvar, progname) -> List[str]:
    maybe_env = os.getenv(envvar)
    maybe_which = shutil.which(progname)
    if maybe_env:
        return maybe_env.split(' ')  # Well-known vars are often meant to be word-split
    elif maybe_which:
        return [ maybe_which ]
    else:
        sys.exit(f"{progname} not found")