GNU bug report logs - #67545
wrap-program gives different argv[0] for Python scripts

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Rikard Nordgren <rikard.nordgren <at> farmaci.uu.se>
To: <bug-guix <at> gnu.org>
Subject: wrap-program gives different argv[0] for Python scripts
Date: Thu, 30 Nov 2023 14:06:07 +0100

For example the meld package is using wrap-program and the name of the
actual meld executable will be .meld-real. The idea is that the -a
option to exec in the wrapper script should change the name of argv[0],
but for Python scripts this doesn't work. This means that when doing
"meld --version" it gives ".meld-real 3.22.0" instead of the expected
"meld 3.22.0". Any ideas on how this could be fixed?








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Message #8 received at 67545 <at> debbugs.gnu.org (full text, mbox):

From: Maxim Cournoyer <maxim.cournoyer <at> gmail.com>
To: Rikard Nordgren <rikard.nordgren <at> farmaci.uu.se>
Cc: 67545 <at> debbugs.gnu.org
Subject: Re: bug#67545: wrap-program gives different argv[0] for Python scripts
Date: Mon, 11 Dec 2023 23:23:58 -0500

Hi,

Rikard Nordgren <rikard.nordgren <at> farmaci.uu.se> writes:

> For example the meld package is using wrap-program and the name of the
> actual meld executable will be .meld-real. The idea is that the -a
> option to exec in the wrapper script should change the name of argv[0],
> but for Python scripts this doesn't work. This means that when doing
> "meld --version" it gives ".meld-real 3.22.0" instead of the expected
> "meld 3.22.0". Any ideas on how this could be fixed?

We already have a solution, in the form of 'wrap-script'.  I have an old
series changing pyproject-build-system to use it instead of wrap-program
for core-updates, perhaps I should revive it.

-- 
Thanks,
Maxim

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