| Message ID | 20230127111237.2910126-1-zimon.toutoune@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | [bug#61094] doc: Document 'shebang' for 'guix shell'. | expand |
Am Freitag, dem 27.01.2023 um 12:12 +0100 schrieb Simon Tournier: > * doc/guix.texi (Invoking guix shell): Add a note mentioning how to > use > 'shebang'. > --- > doc/guix.texi | 15 ++++++++++++++- > 1 file changed, 14 insertions(+), 1 deletion(-) > > diff --git a/doc/guix.texi b/doc/guix.texi > index 2b1ad77ba5..acda01c8e6 100644 > --- a/doc/guix.texi > +++ b/doc/guix.texi > @@ -71,7 +71,7 @@ Copyright @copyright{} 2019 Kyle Andrews@* > Copyright @copyright{} 2019 Alex Griffin@* > Copyright @copyright{} 2019, 2020, 2021, 2022 Guillaume Le > Vaillant@* > Copyright @copyright{} 2020 Liliana Marie Prikler@* > -Copyright @copyright{} 2019, 2020, 2021, 2022 Simon Tournier@* > +Copyright @copyright{} 2019, 2020, 2021, 2022, 2023 Simon Tournier@* > Copyright @copyright{} 2020 Wiktor Żelazny@* > Copyright @copyright{} 2020 Damien Cassou@* > Copyright @copyright{} 2020 Jakub Kądziołka@* > @@ -5923,6 +5923,19 @@ building or downloading any missing package, > and runs the > guix shell python python-numpy -- python3 > @end example > > +@quotation Note > +@cindex shebang > +@command{guix shell} can be used as @emph{shebang}. Consider the > +previous example as an executable Python script, the @emph{shebang} > +reads, > + > +@example > +#!/usr/bin/env -S guix shell python python-nympy -- python3 > +@end example > + > +All the @var{options} or convenience of @command{guix shell} apply. > +@end quotation > + Is this really guix running as a shell or is it actually a feature of env? In either case, it's worth documenting, but we should try to stay factually correct. Cheers
Hi, On Fri, 03 Feb 2023 at 23:54, Liliana Marie Prikler <liliana.prikler@gmail.com> wrote: >> +@quotation Note >> +@cindex shebang >> +@command{guix shell} can be used as @emph{shebang}. Consider the >> +previous example as an executable Python script, the @emph{shebang} >> +reads, >> + >> +@example >> +#!/usr/bin/env -S guix shell python python-nympy -- python3 >> +@end example >> + >> +All the @var{options} or convenience of @command{guix shell} apply. >> +@end quotation >> + > > Is this really guix running as a shell or is it actually a feature of > env? In either case, it's worth documenting, but we should try to stay > factually correct. Well, I am not sure to understand the question. It is a feature of env which allows to run “guix shell” which provides python3 as “shell”. From my understanding, all written seems factually correct. Maybe I am missing something and I would be happy to be corrected if I am doing wrong. :-) Cheers, simon
Hello, >>> +@example >>> +#!/usr/bin/env -S guix shell python python-nympy -- python3 >>> +@end example Apparently, according to POSIX you're only allowed one argument on the '#!' line after the path of the executable. I haven't confirmed this myself but it is in the guile manual, section 4.3.2 "The Meta Switch". One argument does seem quite limiting though so I wonder if anyone actually imposes that limit. Morgan
Hi, Morgan Smith <Morgan.J.Smith@outlook.com> skribis: >>>> +@example >>>> +#!/usr/bin/env -S guix shell python python-nympy -- python3 >>>> +@end example > > Apparently, according to POSIX you're only allowed one argument on the > '#!' line after the path of the executable. I haven't confirmed this > myself but it is in the guile manual, section 4.3.2 "The Meta Switch". > > One argument does seem quite limiting though so I wonder if anyone > actually imposes that limit. Yes, and ‘env -S’ is used to work around that limitation by splitting that one argument. It’s a GNU extension, which is fine in this context. Ludo’.
diff --git a/doc/guix.texi b/doc/guix.texi index 2b1ad77ba5..acda01c8e6 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -71,7 +71,7 @@ Copyright @copyright{} 2019 Kyle Andrews@* Copyright @copyright{} 2019 Alex Griffin@* Copyright @copyright{} 2019, 2020, 2021, 2022 Guillaume Le Vaillant@* Copyright @copyright{} 2020 Liliana Marie Prikler@* -Copyright @copyright{} 2019, 2020, 2021, 2022 Simon Tournier@* +Copyright @copyright{} 2019, 2020, 2021, 2022, 2023 Simon Tournier@* Copyright @copyright{} 2020 Wiktor Żelazny@* Copyright @copyright{} 2020 Damien Cassou@* Copyright @copyright{} 2020 Jakub Kądziołka@* @@ -5923,6 +5923,19 @@ building or downloading any missing package, and runs the guix shell python python-numpy -- python3 @end example +@quotation Note +@cindex shebang +@command{guix shell} can be used as @emph{shebang}. Consider the +previous example as an executable Python script, the @emph{shebang} +reads, + +@example +#!/usr/bin/env -S guix shell python python-nympy -- python3 +@end example + +All the @var{options} or convenience of @command{guix shell} apply. +@end quotation + Development environments can be created as in the example below, which spawns an interactive shell containing all the dependencies and environment variables needed to work on Inkscape: