Re: Reference a store path of an input?

[Nicolas Goaziou <mail@nicolasgoaziou.fr>]

Hello,

Jim Newsome <jim@sporksmith.net> writes:

> I'm just getting started experimenting with guix and guile

Great!

> I'd like to add some explicit flags to the cmake invocation so that it
> knows where to find glib. What do I substitute in for "get-store-path" 
> below? Pointers to how I might have found the appropriate helper or
> approach on my own also appreciated.

You may want to read about G-Expressions in Guix manual. See also
<https://guix.gnu.org/fr/blog/2021/the-big-change/> for addition
insight.

> ```
> (define-public oniontrace
>   (package
>     (name "oniontrace")
>     (build-system cmake-build-system)
>     (inputs `(("glib", glib)))
>     (arguments
>       '(#:configure-flags
>          (list (string-append "-DCMAKE_EXTRA_INCLUDES="
>          (get-store-path   "glib") "/include"))))
> ...
> ```

I should be:

(arguments
 (list
  #:configure-flags
  #~(list (string-append "-DCMAKE_EXTRA_INCLUDES=" #$glib "/include"))))

Regards,
-- 
Nicolas Goaziou