From e585ec4383a01489f61e65dccbb63e0e446b16bd Mon Sep 17 00:00:00 2001
From: Rutherther <rutherther@ditigal.xyz>
Date: Sun, 22 Feb 2026 17:02:57 +0100
Subject: [PATCH] feat: allow usage of Nixpkgs OpenGL programs

---
 config.scm                         |  6 +++++-
 modules/ruther/services/nix-gl.scm | 27 +++++++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)
 create mode 100644 modules/ruther/services/nix-gl.scm

diff --git a/config.scm b/config.scm
index 1a95894e75e1750496b4909ecd5a003d6b03f1d7..6de73416cca517bb176a1572e9fe8b4bda947d1b 100644
--- a/config.scm
+++ b/config.scm
@@ -22,6 +22,7 @@
  (gnu system accounts)
  (ruther services system)
  (ruther services bind)
+ (ruther services nix-gl)
  (ruther bootloader grub))
 (use-service-modules desktop sddm xorg base nix pm virtualization vpn
                      sound dbus cups containers security-token networking
@@ -31,7 +32,7 @@
                      linux embedded finance python-xyz freedesktop
                      python-build haskell-apps commencement
                      polkit firmware databases guile security-token
-                     docker)
+                     docker base)
 
 (define wireshark-patched
   (package/inherit wireshark
@@ -277,6 +278,9 @@
                            (home "/home/fbw"))
                           %default-guix-shared-users))))
 
+
+              ;; Let's use GUI apps from Nixpkgs, because, why not?
+              nixos-opengl-driver-service
               (service nix-service-type
                        (nix-configuration
                         (extra-config
diff --git a/modules/ruther/services/nix-gl.scm b/modules/ruther/services/nix-gl.scm
new file mode 100644
index 0000000000000000000000000000000000000000..c768411313befb1c0b71d073f157a44e6ba58edd
--- /dev/null
+++ b/modules/ruther/services/nix-gl.scm
@@ -0,0 +1,27 @@
+(define-module (ruther services nix-gl)
+  #:use-module (guix gexp)
+  #:use-module (guix packages)
+  #:use-module (guix utils)
+
+  #:use-module (gnu packages gl)
+
+  #:use-module (gnu services)
+  #:use-module (gnu services sysctl)
+  #:use-module (gnu services configuration))
+
+(define-public mesa-w-libglvnd
+  (package/inherit mesa
+    (inputs (modify-inputs (package-inputs mesa)
+              (append libglvnd)))
+    (arguments
+      (substitute-keyword-arguments (package-arguments mesa)
+        ((#:phases phases #~%standard-phases)
+         #~(modify-phases #$phases
+             (add-after 'install 'patch-glvnd-json
+               (lambda _
+                 (substitute* (string-append #$output "/share/glvnd/egl_vendor.d/50_mesa.json")
+                   (("libEGL_mesa\\.so\\.0")
+                    (string-append #$output "/lib/libEGL_mesa.so.0")))))))))))
+
+(define-public nixos-opengl-driver-service
+  (extra-special-file "/run/opengl-driver" mesa-w-libglvnd))