Re: [PATCH] gnu: Add nim.

[David Craven]

+           (add-before 'install 'create-dest-dirs
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let ((out (assoc-ref outputs "out")))
+                 (mkdir out)
+                 (mkdir (string-append out "/bin")))))
+           (replace 'install
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let ((out (assoc-ref outputs "out")))
+                 (system (string-append "./install.sh " out "/opt"))
+                 (symlink
+                   (string-append out "/opt/nim/bin/nim")
+                   (string-append out "/bin/nim"))))))))

> Done. Nim is installed in /opt because it's the easiest and recommended
> way of installing it.

What do you think about patching install.sh to not create a nim subfolder?

Then you could replace these two phases with

+             (lambda* (#:key outputs #:allow-other-keys)
+               (let ((out (assoc-ref outputs "out")))
+                 (system* "./install.sh" out))