fix webgl firefox without breaking policies

home/nix/programs/firefox.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, nixgl, ... }:
   let
     lock-false = {
       Value = false;
@@ -8,11 +8,8 @@
       Value = true;
       Status = "locked";
     };
-  in
+    nixGL = "${nixgl.packages.${pkgs.system}.nixGLIntel}/bin/nixGLIntel";
-{
+    my-firefox = (pkgs.firefox.override {
-  programs.firefox = {
-    enable = true;
-    package = pkgs.firefox.override {
       extraPrefs = ''
         //
 
@@ -25,18 +22,6 @@
         lockPref("privacy.donottrackheader.enabled", true);
         lockPref("privacy.donottrackheader.value", 1);
 
-        // Fingerprinting
-        lockPref("privacy.fingerprintingProtection", true);
-        pref(
-        	"privacy.fingerprintingProtection.overrides",
-        	"+AllTargets,-KeyboardEvents,-SpeechSynthesis,-CSSPrefersColorScheme,-CSSPrefersReducedMotion,-NavigatorUserAgent,-JSDateTimeUTC,-HttpUserAgent",
-        );
-        lockPref("privacy.fingerprintingProtection.pbmode", true);
-        lockPref("privacy.resistFingerprinting", false);
-        lockPref("privacy.resistFingerprinting.block_mozAddonManage", true);
-        lockPref("privacy.resistFingerprinting.letterboxing", false);
-        clearPref("privacy.resistFingerprinting.pbmode");
-
         // New sidebar
         lockPref("sidebar.revamp", true);
         lockPref("sidebar.verticalTabs", true);
@@ -45,7 +30,16 @@
 
         //
       '';
-    };
+    }).overrideAttrs (old: {
+      buildCommand = old.buildCommand + ''
+        sed -i "s#firefox-wrapped\"#firefox-wrapped\" \"${nixGL}\"#1" "$out/bin/firefox"
+      '';
+    });
+  in
+{
+  programs.firefox = {
+    enable = true;
+    package = my-firefox;
 
     policies = {
       EnableTrackingProtection = {