bug#19641: guix environment

[Ludovic Courtès]

Federico Beffa <address@hidden> skribis:

> I believe that "guix environment" does not consider all outputs
> properly. As one example, when I execute:
>
> guix environment libpeas
>
> the $PATH doesn't include /gnu/store/...glib-2.42.1-bin/bin where
> ("glib:bin" ,glib "bin") is one of the native-inputs of the package.
>
> Is this intentional?

I don’t think so.

On closer inspection, I see two issues:

  (define (packages->transitive-inputs packages)
    "Return a list of the transitive inputs for all PACKAGES."
    (define (transitive-inputs package)
      (filter-map (match-lambda
                   ((_ (? package? package)) package)
                   (_ #f))    ; <---- !
                  (bag-transitive-inputs
                   (package->bag package))))
    (delete-duplicates
     (append-map transitive-inputs packages)))

Here only inputs of the form ("foo" PKG) are considered; things like
("glib" ,glib "bin") are discarded.

  (define (for-each-search-path proc inputs derivations pure?)
    (let ((paths (map derivation->output-path derivations))) ; <-- !
      [...]

Above, ‘derivation->output-path’ considers only the “out” output,
ignoring others if they are needed.

I think these would need to be adjusted.  Any takers?  :-)

Ludo’.