Set up wireguard networks using functions.

nix/configuration/hosts/odo/power_management.nix

@@ -11,4 +11,19 @@
   environment.systemPackages = with pkgs; [
     powertop
   ];
+
+  # amdgpu.abmlevel=3 :: Automatically reduce screen brightness but tweak colors to compensate for power reduction.
+  # pcie_aspm=force pcie_aspm.policy=powersupersave :: Enable PCIe active state power management for power reduction.
+  # nowatchdog :: Disable watchdog for power savings (related to disable_sp5100_watchdog above).
+  # amd_pstate=passive :: Fully automated hardware pstate control.
+  # amd_pstate=active :: Same as passive except we can set the energy performance preference (EPP) to suggest how much we prefer performance or energy efficiency.
+  # amd_pstate=guided :: Same as passive except we can set upper and lower frequency bounds.
+  # amdgpu.dcdebugmask=0x10 :: Allegedly disables Panel Replay from https://community.frame.work/t/tracking-freezing-arch-linux-amd/39495/32
+  boot.kernelParams = [
+    "amdgpu.abmlevel=3"
+    "pcie_aspm=force"
+    "pcie_aspm.policy=powersupersave"
+    "nowatchdog"
+    "amdgpu.dcdebugmask=0x10"
+  ];
 }

nix/configuration/roles/wireguard/default.nix

@@ -5,30 +5,42 @@
   ...
 }:
 
+let
+  activatedWg = name: {
+    networking.wg-quick.interfaces."${name}".configFile = "/persist/manual/wireguard/${name}.conf";
+    systemd.services."wg-quick-${name}" = {
+      after = [
+        "nss-lookup.target"
+        "systemd-resolved.service"
+        "multi-user.target"
+      ];
+      preStart = "${pkgs.toybox}/bin/sleep 10";
+    };
+    # systemd.services."wg-quick-${name}".after = [
+    #   "nss-lookup.target"
+    #   "systemd-resolved.service"
+    #   "multi-user.target"
+    # ];
+    # systemd.services."wg-quick-${name}".preStart = "${pkgs.toybox}/bin/sleep 10";
+  };
+  deactivatedWg = name: {
+    networking.wg-quick.interfaces."${name}" = {
+      configFile = "/persist/manual/wireguard/${name}.conf";
+      autostart = false;
+    };
+  };
+  wgConfig = lib.attrsets.recursiveUpdate (lib.attrsets.recursiveUpdate (lib.attrsets.recursiveUpdate
+    (lib.attrsets.recursiveUpdate {
+      networking.firewall.allowedUDPPorts = [ 51821 ];
+      networking.wireguard.enable = true;
+    } (activatedWg "drmario"))
+    (activatedWg "wgh")
+  ) (activatedWg "colo")) (deactivatedWg "wgf");
+in
 {
   imports = [ ];
 
-  config = lib.mkIf (!config.me.buildingIso) {
-    networking.firewall.allowedUDPPorts = [ 51821 ];
-    networking.wireguard.enable = true;
-    networking.wg-quick.interfaces.drmario.configFile = "/persist/manual/wireguard/drmario.conf";
-    systemd.services."wg-quick-drmario".after = [
-      "nss-lookup.target"
-      "systemd-resolved.service"
-      "multi-user.target"
-    ];
-
-    systemd.services."wg-quick-drmario".preStart = "${pkgs.toybox}/bin/sleep 10";
-
-    networking.wg-quick.interfaces.wgh.configFile = "/persist/manual/wireguard/wgh.conf";
-    systemd.services."wg-quick-wgh".after = [
-      "nss-lookup.target"
-      "systemd-resolved.service"
-      "multi-user.target"
-    ];
-
-    systemd.services."wg-quick-wgh".preStart = "${pkgs.toybox}/bin/sleep 10";
-  };
+  config = lib.mkIf (!config.me.buildingIso) wgConfig;
 
   # environment.systemPackages = with pkgs; [
   #   wireguard-tools