hardware/x86_64.nix: split these options into more relevant files

also makes it so we dont ship opengl on platforms where we dont need it (servo)

hosts/by-name/moby/default.nix

@@ -136,6 +136,4 @@
     # make Pinephone front LEDs writable by user.
     SUBSYSTEM=="leds", DEVPATH=="*/*:indicator", RUN+="${chmod} g+w /sys%p/brightness", RUN+="${chown} :video /sys%p/brightness"
   '';
-
-  hardware.opengl.driSupport = true;
 }

hosts/common/hardware.nix

@@ -26,6 +26,7 @@
 
   # powertop will default to putting USB devices -- including HID -- to sleep after TWO SECONDS
   powerManagement.powertop.enable = false;
+  powerManagement.cpuFreqGovernor = "powersave";
 
   services.logind.extraConfig = ''
     # don’t shutdown when power button is short-pressed

hosts/modules/gui/default.nix

@@ -132,4 +132,12 @@
     "/var/lib/colord"              # preserve color calibrations (?)
     "/var/lib/systemd/backlight"   # backlight brightness
   ];
+
+  hardware.opengl = lib.mkIf config.sane.programs.guiApps.enabled ({
+    driSupport = lib.mkDefault true;
+  } // (lib.optionalAttrs pkgs.stdenv.isx86_64 {
+    # for 32 bit applications
+    # upstream nixpkgs forbids setting driSupport32Bit unless specifically x86_64 (so aarch64 isn't allowed)
+    driSupport32Bit = lib.mkDefault true;
+  }));
 }

hosts/modules/hardware/x86_64.nix

@@ -9,12 +9,7 @@
       # efi_pstore evivars
     ];
 
-    powerManagement.cpuFreqGovernor = "powersave";
     hardware.cpu.amd.updateMicrocode = true;    # desktop
     hardware.cpu.intel.updateMicrocode = true;  # laptop
-
-    hardware.opengl.driSupport = true;
-    # For 32 bit applications
-    hardware.opengl.driSupport32Bit = true;
   };
 }