From: zimoun <zimon.toutoune@gmail.com>
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Cc: 52117@debbugs.gnu.org
Subject: [bug#52117] [core-updates-frozen] [PATCH 0/6] Fix Julia packages.
Date: Mon, 29 Nov 2021 15:10:01 +0100 [thread overview]
Message-ID: <87tufvqchy.fsf_-_@gmail.com> (raw)
In-Reply-To: <87tufx6l74.fsf@gmail.com> (Maxim Cournoyer's message of "Sat, 27 Nov 2021 21:57:51 -0500")
Hi Maxim,
On Sat, 27 Nov 2021 at 21:57, Maxim Cournoyer <maxim.cournoyer@gmail.com> wrote:
> No, it would invoke julia with the following argv list: "julia"
> "-depwarn=yes" "" [...];
>
> My point is that invoke is equivalent to doing an execlp system call;
> and the arguments get passed as a list (including that empty string
> argument when parallel-tests? is #f). Whether this works or not is up
> to the application, so I'd suggest not relying on it. Consider for
> example:
>
> (execlp "python" "python" "" "-c" "print('hello')")
> /gnu/store/cwqv4z5bvb5x6i0zvqgc1j1dnr6w9vp8-profile/bin/python: can't
> find '__main__' module in
> '/home/maxim/src/guix-core-updates-next/gnu/packages/'
Thanks for the explanations.
> It fails because it interprets the empty string argument as the current
> directory, apparently. If that works with the above Julia invocation,
> that's great, but it doesn't make it cleaner in my opinion :-).
Indeed, and it is expected to fail because:
--8<---------------cut here---------------start------------->8---
def _get_main_module_details(error=ImportError):
# Helper that gives a nicer error message when attempting to
# execute a zipfile or directory by invoking __main__.py
main_name = "__main__"
try:
return _get_module_details(main_name)
except ImportError as exc:
if main_name in str(exc):
raise error("can't find %r module in %r" %
(main_name, sys.path[0]))
raise
--8<---------------cut here---------------end--------------->8---
It allows to do:
$ mkdir /tmp/foo
$ echo print(42) > /tmp/foo/__main__.py
$ python /tmp/foo
Therefore, this
$ python '' -c '0'
just fails. Contrary to,
$ cd /tmp/foo
$ python '' -c '0'
which just passes. To me, it is an oddity of the Python command-line
which silently accepts a path; it is not documented by “python -h”.
Anyway, I agree that the behaviour when passing "" is up to the
application, therefore it should be avoided.
Cheers,
simon
next prev parent reply other threads:[~2021-11-29 14:28 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 23:32 [bug#52117] [core-updates-frozen] [PATCH 0/6] Fix Julia packages zimoun
2021-11-25 23:35 ` [bug#52117] [PATCH 1/6] gnu: julia: Test correctly '#:parallel-tests?' zimoun
2021-11-25 23:35 ` [bug#52117] [PATCH 2/6] build: julia-build-system: Correctly disable parallel tests zimoun
2021-11-27 3:17 ` [bug#52117] [core-updates-frozen] [PATCH 0/6] Fix Julia packages Maxim Cournoyer
2021-11-27 12:38 ` zimoun
2021-11-27 18:59 ` zimoun
2021-11-28 2:57 ` Maxim Cournoyer
2021-11-29 14:10 ` zimoun [this message]
2021-11-25 23:35 ` [bug#52117] [PATCH 3/6] gnu: julia-aqua: Disable parallel tests zimoun
2021-11-25 23:35 ` [bug#52117] [PATCH 4/6] gnu: julia-interpolations: " zimoun
2021-11-25 23:35 ` [bug#52117] [PATCH 5/6] gnu: julia-requires: " zimoun
2021-11-25 23:35 ` [bug#52117] [PATCH 6/6] gnu: julia-unitful: " zimoun
2021-11-27 2:26 ` [bug#52117] [core-updates-frozen] [PATCH 0/6] Fix Julia packages Maxim Cournoyer
2021-11-27 6:31 ` bug#52117: " Maxim Cournoyer
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