Re: How do I make a manifest file that installs a specific version of a dependency?

[ludo@gnu.org (Ludovic Courtès)]

Hello,

Zachary Kanfer <zkanfer@gmail.com> skribis:

> Running `guix package -m` on a file with this line `(list icedtea-2.6
> "jdk")` gives an error "In procedure module-lookup: Unbound variable:
> icedtea-2.6".
>
> I get the same error for the following lines:
>
> `(list icedtea-2.6.6 "jdk")`
> `(list icedtea@2.6.6 "jdk")`
>
> `guix package -s icedtea` reports that there is a version 2.6.6. How do I
> specify this in a manifest file? Thanks.

You should use ‘specification->package’ as discussed at
<https://www.gnu.org/software/guix/manual/html_node/Using-the-Configuration-System.html#index-specification_002d_003epackage>.

The ‘specification->package’ procedure takes a spec like those you’d
write on the ‘guix package -i’ command line, and returns the
corresponding package.  ‘specification->package+output’ works similarly
but also returns the specified output (the part that comes after the
colon).

So your manifest would look something like:

  (use-modules (gnu))

  (packages->manifest
   (map (compose list specification->package+output)
        '("icedtea@2.6.6:jdk" "emacs" "vim" …)))

HTH!

Ludo’.