From: Brandon Invergo <brandon@gnu.org>
To: guix-devel@gnu.org
Subject: Re: Python 3 binaries
Date: Sun, 01 Sep 2013 10:20:18 +0200 [thread overview]
Message-ID: <8738ppnebh.fsf@naga.invergo.net> (raw)
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Hi everyone,
> python 3 does not ship a python binary any more, just a binary called
> python3. That could be useful, since it would allow to install python
> 2 and 3 side by side. However, all packages relying on a shebang
> substitution with a python binary now fail.
Here's what it looks like on my Parabola system, which I think is a sane
way of doing it (ok, there's no *truly* sane way of doing it):
$ ls -l /usr/bin/python*
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/python -> python3
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/python-config -> python3-config
lrwxrwxrwx 1 root root 1K May 12 18:01 /usr/bin/python2 -> python2.7
lrwxrwxrwx 1 root root 1K May 12 18:01 /usr/bin/python2-config -> python2.7-config
-rwxr-xr-x 1 root root 7K May 12 18:01 /usr/bin/python2.7
-rwxr-xr-x 1 root root 2K May 12 18:01 /usr/bin/python2.7-config
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/python3 -> python3.3
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/python3-config -> python3.3-config
-rwxr-xr-x 2 root root 11K May 21 17:50 /usr/bin/python3.3
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/python3.3-config -> python3.3m-config
-rwxr-xr-x 2 root root 11K May 21 17:50 /usr/bin/python3.3m
-rwxr-xr-x 1 root root 2K May 21 17:50 /usr/bin/python3.3m-config
$ ls -l /usr/bin/idle*
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/idle -> idle3
-rwxr-xr-x 1 root root 1K May 12 18:01 /usr/bin/idle2
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/idle3 -> idle3.3
-rwxr-xr-x 1 root root 1K May 21 17:50 /usr/bin/idle3.3
$ ls -l /usr/bin/pydoc*
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/pydoc -> pydoc3
-rwxr-xr-x 1 root root 1K May 12 18:01 /usr/bin/pydoc2
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/pydoc3 -> pydoc3.3
-rwxr-xr-x 1 root root 1K May 21 17:50 /usr/bin/pydoc3.3
$ ls -l /usr/bin/2to3*
lrwxrwxrwx 1 root root 1K May 21 17:50 /usr/bin/2to3 -> 2to3-3.3
-rwxr-xr-x 1 root root 1K May 12 18:01 /usr/bin/2to3-2.7
-rwxr-xr-x 1 root root 1K May 21 17:50 /usr/bin/2to3-3.3
I think Debian is similar, but with Python 2 being the default rather
than Python 3.
Shebangs are routinely changed in Parabola to accommodate this but since
shebangs are also routinely being changed in Guix anyway, this shouldn't
be a problem.
So, the install scripts will require a bit of post-processing to
generate the symlinks and to move around some binaries to avoid
conflicts, but I think this is the only thing you can do.
Cheers,
-brandon
ps - great meeting some of you last week in Paris!
--
Brandon Invergo
http://brandon.invergo.net
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next reply other threads:[~2013-09-01 8:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-01 8:20 Brandon Invergo [this message]
2013-09-01 13:49 ` Python 3 binaries Andreas Enge
-- strict thread matches above, loose matches on Subject: below --
2013-08-31 15:30 Andreas Enge
2013-08-31 17:30 ` Cyril Roelandt
2013-08-31 18:20 ` Ludovic Courtès
2013-09-01 9:28 ` Andreas Enge
2013-09-01 10:03 ` Andreas Enge
2013-09-01 14:03 ` Ludovic Courtès
2013-09-01 14:39 ` Andreas Enge
2013-09-01 17:34 ` Ludovic Courtès
2013-09-01 17:40 ` Cyril Roelandt
2013-09-01 18:21 ` Andreas Enge
2013-09-01 17:50 ` Andreas Enge
2013-09-02 6:24 ` Brandon Invergo
2013-09-08 18:35 ` Andreas Enge
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