lutris: configuration init

Initial work to bring home-manager configuration to Lutris. Due to
some limitation on how Lutris rewrites on runtime the .conf file,
only the runners and the extra packages will be addressed in this
patchset.

modules/modules.nix

@@ -153,6 +153,7 @@ let
     ./programs/lieer.nix
     ./programs/looking-glass-client.nix
     ./programs/lsd.nix
+    ./programs/lutris.nix
     ./programs/man.nix
     ./programs/mangohud.nix
     ./programs/matplotlib.nix

modules/programs/lutris.nix

@@ -0,0 +1,152 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+let
+  cfg = config.programs.lutris;
+
+  cemuConf = ''
+    cemu:
+      runner_executable: ${lib.getExe pkgs.cemu}
+  '';
+  dolphinConf = ''
+    dolphin:
+      runner_executable: ${lib.getExe cfg.runners.dolphin.package}
+  '';
+  duckstationConf = ''
+    duckstation:
+      runner_executable: ${lib.getExe pkgs.duckstation}
+  '';
+  pcsx2Conf = ''
+    pcsx2:
+      runner_executable: ${lib.getExe pkgs.pcsx2}
+      nogui: ${boolToString cfg.runners.pcsx2.noGui}
+      visible_in_side_panel: ${boolToString cfg.runners.pcsx2.visible}
+      full_boot: ${boolToString cfg.runners.pcsx2.fullBoot}
+      fullscreen: ${boolToString cfg.runners.pcsx2.fullscreen}
+  '';
+  ppssppConf = ''
+    ppsspp:
+      runner_executable: ${lib.getExe cfg.runners.ppsspp.package}
+  '';
+  rpcs3Conf = ''
+    rpcs3:
+      runner_executable: ${lib.getExe pkgs.rpcs3}
+      nogui: ${boolToString cfg.runners.rpcs3.noGui}
+      visible_in_side_panel: ${boolToString cfg.runners.rpcs3.visible}
+  '';
+
+in {
+  meta.maintainers = [ maintainers.rapiteanu ];
+
+  options = {
+    programs.lutris = {
+      enable = mkEnableOption "Open Source gaming platform for GNU/Linux";
+
+      package = mkOption {
+        type = types.package;
+        default = pkgs.lutris;
+        defaultText = literalExpression "pkgs.lutris";
+        description = "The Lutris package to use.";
+      };
+
+      extraPackages = mkOption {
+        type = with types; listOf package;
+        default = [ ];
+        example =
+          literalExpression "[ pkgs.wineWowPackages.staging pkgs.winetricks ]";
+        description = "Packages that should be available to Lutris.";
+      };
+
+      runners = {
+        cemu.enable = mkEnableOption "cemu";
+
+        dolphin = {
+          enable = mkEnableOption "dolphin-emu";
+          package = mkOption {
+            type = types.package;
+            default = pkgs.dolphin-emu;
+            defaultText = literalExpression "pkgs.dolphin-emu";
+            description = "The Lutris Dolphin Emulator package to use.";
+          };
+        };
+
+        duckstation.enable = mkEnableOption "duckstation";
+
+        pcsx2 = {
+          enable = mkEnableOption "pcsx2";
+          noGui = mkOption {
+            type = types.bool;
+            default = false;
+            description = "Run the PCSX2 application without a GUI.";
+          };
+          visible = mkOption {
+            type = types.bool;
+            default = true;
+            description = "Set the PCSX2 visiblity in the side panel.";
+          };
+          fullBoot = mkOption {
+            type = types.bool;
+            default = false;
+            description = "Don't skip the BIOS handover.";
+          };
+          fullscreen = mkOption {
+            type = types.bool;
+            default = false;
+            description = "Run the RPCS3 application in fullscreen.";
+          };
+        };
+
+        ppsspp = {
+          enable = mkEnableOption "ppsspp";
+          package = mkOption {
+            type = types.package;
+            default = pkgs.ppsspp;
+            defaultText = literalExpression "pkgs.ppsspp";
+            description = "The Lutris PPSSPP package to use.";
+          };
+        };
+
+        rpcs3 = {
+          enable = mkEnableOption "rpcs3";
+          noGui = mkOption {
+            type = types.bool;
+            default = false;
+            description = "Run the RPCS3 application without a GUI.";
+          };
+          visible = mkOption {
+            type = types.bool;
+            default = true;
+            description = "Set the RPCS3 visiblity in the side panel.";
+          };
+        };
+      };
+
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages =
+      [ (cfg.package.override { extraPkgs = pkgs: cfg.extraPackages; }) ]
+      ++ optional cfg.runners.cemu.enable pkgs.cemu
+      ++ optional cfg.runners.dolphin.enable cfg.runners.dolphin.package
+      ++ optional cfg.runners.duckstation.enable pkgs.duckstation
+      ++ optional cfg.runners.pcsx2.enable pkgs.pcsx2
+      ++ optional cfg.runners.ppsspp.enable cfg.runners.ppsspp.package
+      ++ optional cfg.runners.rpcs3.enable pkgs.rpcs3;
+
+    xdg.dataFile = {
+      "lutris/runners/cemu.yml" =
+        mkIf (cfg.runners.cemu.enable) { text = cemuConf; };
+      "lutris/runners/dolphin.yml" =
+        mkIf (cfg.runners.dolphin.enable) { text = dolphinConf; };
+      "lutris/runners/duckstation.yml" =
+        mkIf (cfg.runners.duckstation.enable) { text = duckstationConf; };
+      "lutris/runners/pcsx2.yml" =
+        mkIf (cfg.runners.pcsx2.enable) { text = pcsx2Conf; };
+      "lutris/runners/ppsspp.yml" =
+        mkIf (cfg.runners.ppsspp.enable) { text = ppssppConf; };
+      "lutris/runners/rpcs3.yml" =
+        mkIf (cfg.runners.rpcs3.enable) { text = rpcs3Conf; };
+    };
+  };
+}