nongnu: Add nvidia-prime-select.

* nongnu/packages/nvidia.scm (nvidia-prime-select): New variable.

nongnu/packages/nvidia.scm

@@ -42,6 +42,7 @@
   #:use-module (gnu packages gcc)
   #:use-module (gnu packages gl)
   #:use-module (gnu packages glib)
+  #:use-module (gnu packages gnome)
   #:use-module (gnu packages gtk)
   #:use-module (gnu packages linux)
   #:use-module (gnu packages m4)
@@ -453,6 +454,53 @@ still require firmware file @code{gsp.bin} to be loaded as well as closed
 source userspace tools from the corresponding driver release.")
     (license license-gnu:gpl2)))
 
+(define-public nvidia-prime-select
+  (let ((commit "902aa9a069f7f87d44e3ca3425b91015e017afc5") (revision "1"))
+    (package
+      (name "nvidia-prime-select")
+      (version (git-version "0.1" revision commit))
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url "https://github.com/wildtruc/nvidia-prime-select")
+                      (commit commit)))
+                (file-name (git-file-name name version))
+                (sha256
+                 (base32
+                  "0j5gmypj6ij7dbwlk8fnq3dkhkzdyz8vygy8h51j0xd2nmcp0pkg"))))
+      (build-system gnu-build-system)
+      (arguments
+       (list #:tests? #f ;no test suite
+             #:phases
+             #~(modify-phases %standard-phases
+                 (add-after 'unpack 'fix-install
+                   (lambda* (#:key outputs #:allow-other-keys)
+                     (substitute* "nvidia-prime-select"
+                       (("grub2-mkconfig") "grub-mkconfig"))
+                     (substitute* "Makefile"
+                       (("/etc") (string-append #$output "/etc"))
+                       (("/usr/bin") (string-append #$output "/bin"))
+                       (("/usr/sbin") (string-append #$output "/bin"))
+                       (("/usr/share") (string-append #$output "/usr/share")))))
+                 (delete 'configure)
+                 (add-after 'install 'wrap-scripts
+                   (lambda* (#:key outputs #:allow-other-keys)
+                     (wrap-program (string-append #$output
+                                                  "/bin/nvidia-prime-ui")
+                                   `("PATH" ":" prefix
+                                     (,(string-append #$output "/lib/"))))
+                     (wrap-program (string-append #$output
+                                                  "/bin/nvidia-prime-select")
+                                   `("PATH" ":" prefix
+                                     (,(string-append #$output "/lib/")))))))))
+      (inputs (list bash-minimal zenity)) ; for wrap-program
+      (synopsis "Nvidia prime to switch between GPUs")
+      (description
+       "This package provides a script to switch between the default Intel GPU
+and the discrete Nvidia graphic card.")
+      (home-page "https://github.com/wildtruc/nvidia-prime-select")
+      (license license-gnu:gpl3+))))
+
 (define-public nvidia-settings
   (package
     (name "nvidia-settings")