From c41b13d39ccc2d6e239782de99ba8e3cdd061e5a Mon Sep 17 00:00:00 2001 From: Vincent Fazio Date: Thu, 10 Nov 2022 10:26:42 -0600 Subject: gh-99204: Calculate base_executable by alternate names in POSIX venvs (GH-99206) Check to see if `base_executable` exists. If it does not, attempt to use known alternative names of the python binary to find an executable in the path specified by `home`. If no alternative is found, previous behavior is preserved. Signed-off-by: Vincent Fazio Signed-off-by: Vincent Fazio --- Modules/getpath.py | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'Modules/getpath.py') diff --git a/Modules/getpath.py b/Modules/getpath.py index 90a6473f1e6..d24b15259a9 100644 --- a/Modules/getpath.py +++ b/Modules/getpath.py @@ -375,6 +375,25 @@ if not home and not py_setpath: pass if not base_executable: base_executable = joinpath(executable_dir, basename(executable)) + # It's possible "python" is executed from within a posix venv but that + # "python" is not available in the "home" directory as the standard + # `make install` does not create it and distros often do not provide it. + # + # In this case, try to fall back to known alternatives + if os_name != 'nt' and not isfile(base_executable): + base_exe = basename(executable) + for candidate in (DEFAULT_PROGRAM_NAME, f'python{VERSION_MAJOR}.{VERSION_MINOR}'): + candidate += EXE_SUFFIX if EXE_SUFFIX else '' + if base_exe == candidate: + continue + candidate = joinpath(executable_dir, candidate) + # Only set base_executable if the candidate exists. + # If no candidate succeeds, subsequent errors related to + # base_executable (like FileNotFoundError) remain in the + # context of the original executable name + if isfile(candidate): + base_executable = candidate + break break else: venv_prefix = None -- cgit v1.2.3