GNU bug report logs - #50960
[PATCH 00/10] Add 'guix shell' to subsume 'guix environment'

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From: Maxime Devos <maximedevos <at> telenet.be>
To: Ludovic Courtès <ludo <at> gnu.org>, Liliana Marie Prikler <liliana.prikler <at> gmail.com>
Cc: 50960 <at> debbugs.gnu.org
Subject: [bug#50960] [PATCH 00/10] Add 'guix shell' to subsume 'guix environment'
Date: Tue, 05 Oct 2021 09:50:02 +0200

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Ludovic Courtès schreef op za 02-10-2021 om 15:43 [+0200]:
> Hi,
> 
> Liliana Marie Prikler <liliana.prikler <at> gmail.com> skribis:
> 
> > Am Samstag, den 02.10.2021, 12:22 +0200 schrieb Ludovic Courtès:
> > > [...]
> > > +(define (auto-detect-manifest opts)
> > > +  "If OPTS do not specify packages or a manifest, load a
> > > \"guix.scm\" or
> > > +\"manifest.scm\" file from the current directory or one of its
> > > ancestors.
> > > +Return the modified OPTS."
> > > +  (define (options-contain-payload? opts)
> > > +    (match opts
> > > +      (() #f)
> > > +      ((('package . _) . _) #t)
> > > +      ((('load . _) . _) #t)
> > > +      ((('manifest . _) . _) #t)
> > > +      ((('expression . _) . _) #t)
> > > +      ((_ . rest) (options-contain-payload? rest))))
> > > +
> > > +  (if (options-contain-payload? opts)
> > > +      opts
> > > +      (match (find-file-in-parent-directories '("guix.scm"
> > > "manifest.scm"))
> > > +        (#f
> > > +         (warning (G_ "no packages specified; creating an empty
> > > environment~%"))
> > > +         opts)
> > > +        (file
> > > +         (info (G_ "loading environment from '~a'...~%") file)
> > > +         (match (basename file)
> > > +           ("guix.scm"
> > > +            (alist-cons 'load `(package ,file) opts))
> > > +           ("manifest.scm"
> > > +            (alist-cons 'manifest file opts)))))))
> > > [...]
> > What would happen on the top-level of the Guix source tree or deep
> > inside the tree of a guile package that deals with manifests, that
> > aren't necessarily related to Guix?
> 
> You mean a directory that contains a file named ‘guix.scm’ or
> ‘manifest.scm’ but that happens to do something completely unrelated?
> 
> We can never rule this out, but I’d say it’s unlikely (these two
> conventions are rather well established) and it’s up to the user to pay
> attention.
> 
> WDYT?

Guix itself doesn't follow this convention: the guix source tree has an unrelated
"guix.scm" file, that doesn't evaluate to a package.  I'd expect that running
"guix shell" within the guix source tree would be equivalent to
"guix environment guix", but currently this doesn't seem to be the case.

Greetings,
Maxime.

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