From 07a29f8004fd346289fc6bd93fd4dbbc62148642 Mon Sep 17 00:00:00 2001
From: Daniel Barlow <dan@telent.net>
Date: Sun, 18 Feb 2024 22:04:58 +0000
Subject: [PATCH] enable opengl (maybe)

---
 configuration.nix | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/configuration.nix b/configuration.nix
index 91a5f75..e8df851 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -11,6 +11,23 @@ let
     };
     makeFlags = ["prefix=${placeholder "out"}"];
   };
+
+  drm-framebuffer =  pkgs.stdenv.mkDerivation {
+    name = "drm-framebuffer";
+    src = pkgs.fetchFromGitHub {
+      owner = "embear-engineering";
+      repo = "drm-framebuffer";
+      rev = "80e862bd13bc0f96848af1c1b24b4b0e1fe5b23c";
+      hash = "sha256-YBRG8FUbhwAgquzehvo5Mu+xODcWOOG1HTMtUhNq6xo=";
+    };
+    nativeBuildInputs = [ pkgs.pkg-config ];
+    buildInputs = with pkgs; [ libdrm ];
+    preBuild = ''
+      makeFlagsArray+=("CFLAGS=$($PKG_CONFIG --libs --cflags libdrm)")
+    '';
+    makeFlags = [ "DESTDIR=${placeholder "out"}" "bindir=/bin" ];
+  };
+
   modemFirmware = config.mobile.device.firmware.override {
     modem = ./local/harpia-modem;
   };
@@ -55,6 +72,7 @@ in {
       SUBSYSTEM=="rpmsg", KERNEL=="rpmsg_ctrl[0-9]*", ATTRS{rpmsg_name}=="?*", SYMLINK+="rpmsg/$attr{rpmsg_name}/ctrl"
       SUBSYSTEM=="rpmsg", KERNEL=="rpmsg[0-9]*", ATTR{name}=="?*", ATTRS{rpmsg_name}=="?*", SYMLINK+="rpmsg/$attr{rpmsg_name}/$attr{name}"
     '';
+    environment.systemPackages = with pkgs; [ drm-framebuffer];
 
     users.users.dan = {
       isNormalUser = true;
@@ -69,5 +87,8 @@ in {
       device = "/dev/disk/by-partlabel/system";
       fsType = "ext4";
     };
+    hardware.opengl = {
+      enable = true; driSupport = true;
+    };
   };
 }