From 5ecb90226588fd50fb8b6838e4f623c95437f661 Mon Sep 17 00:00:00 2001
From: Joinemm <joonas@rautiola.co>
Date: Fri, 12 Apr 2024 18:03:53 +0300
Subject: [PATCH] add nix-gaming

---
 flake.lock         | 60 +++++++++++++++++++++++++++++++++++++++++++++-
 flake.nix          |  5 ++++
 modules/gaming.nix | 57 +++++++++++++++++++++++++++++--------------
 modules/gui.nix    |  3 +++
 modules/nix.nix    |  6 +++--
 5 files changed, 110 insertions(+), 21 deletions(-)

diff --git a/flake.lock b/flake.lock
index 3134353..3af0892 100644
--- a/flake.lock
+++ b/flake.lock
@@ -94,6 +94,24 @@
       }
     },
     "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1712014858,
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "flake-parts_2": {
       "inputs": {
         "nixpkgs-lib": [
           "nixvim",
@@ -231,6 +249,27 @@
         "type": "github"
       }
     },
+    "nix-gaming": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1712884330,
+        "narHash": "sha256-xYTrM82HEy1E1tGysT3CfNLgTKym9TUMciOPJrPkPaA=",
+        "owner": "fufexan",
+        "repo": "nix-gaming",
+        "rev": "e3f09d077b360802d5b744befd2a0803fb9aae18",
+        "type": "github"
+      },
+      "original": {
+        "owner": "fufexan",
+        "repo": "nix-gaming",
+        "type": "github"
+      }
+    },
     "nix-index-database": {
       "inputs": {
         "nixpkgs": [
@@ -282,11 +321,29 @@
         "type": "github"
       }
     },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1711703276,
+        "narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixvim": {
       "inputs": {
         "devshell": "devshell",
         "flake-compat": "flake-compat",
-        "flake-parts": "flake-parts",
+        "flake-parts": "flake-parts_2",
         "home-manager": [
           "home-manager"
         ],
@@ -343,6 +400,7 @@
         "bin": "bin",
         "disko": "disko",
         "home-manager": "home-manager",
+        "nix-gaming": "nix-gaming",
         "nix-index-database": "nix-index-database",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
diff --git a/flake.nix b/flake.nix
index 7ea0446..5de4f82 100644
--- a/flake.nix
+++ b/flake.nix
@@ -38,6 +38,11 @@
       url = "github:joinemm/bin";
       inputs.nixpkgs.follows = "nixpkgs";
     };
+
+    nix-gaming = {
+      url = "github:fufexan/nix-gaming";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs = inputs @ {
diff --git a/modules/gaming.nix b/modules/gaming.nix
index 6644dcb..0e546da 100644
--- a/modules/gaming.nix
+++ b/modules/gaming.nix
@@ -1,27 +1,42 @@
-{pkgs, ...}: {
+{
+  pkgs,
+  inputs,
+  ...
+}: {
+  imports = [
+    inputs.nix-gaming.nixosModules.platformOptimizations
+  ];
+
   programs = {
-    steam.enable = true;
+    steam = {
+      enable = true;
+      platformOptimizations.enable = true;
+      extraCompatPackages = with pkgs; [
+        proton-ge-bin
+      ];
+    };
+
     gamemode.enable = true;
+
     # for minecraft
     java.enable = true;
   };
 
-  hardware.opengl = {
-    enable = true;
-    driSupport = true;
-    driSupport32Bit = true;
-  };
+  hardware = {
+    opengl = {
+      enable = true;
+      driSupport = true;
+      driSupport32Bit = true;
 
-  # better for steam proton games
-  systemd.extraConfig = "DefaultLimitNOFILE=1048576";
+      # Add opengl/vulkan support
+      extraPackages = with pkgs; [
+        libva
+      ];
+    };
 
-  # Add opengl/vulkan support
-  hardware.opengl.extraPackages = with pkgs; [
-    libva
-  ];
-
-  # Xbox wireless controller driver
-  hardware.xone.enable = true;
+    # Xbox wireless controller driver
+    xone.enable = true;
+  };
 
   environment.systemPackages = with pkgs; [
     # vulkan
@@ -29,8 +44,14 @@
     vulkan-loader
     vulkan-validation-layers
     vulkan-extension-layer
-    # open source minecraft launcher
-    prismlauncher
+
+    prismlauncher # open source minecraft launcher
     protontricks
+    mangohud
   ];
+
+  environment.sessionVariables = {
+    MANGOHUD = "1";
+    MANGOHUD_DLSYM = "1";
+  };
 }
diff --git a/modules/gui.nix b/modules/gui.nix
index 1192b33..2384088 100644
--- a/modules/gui.nix
+++ b/modules/gui.nix
@@ -35,6 +35,9 @@
       autoRepeatDelay = 300;
       autoRepeatInterval = 25;
 
+      # I don't need xterm
+      excludePackages = [pkgs.xterm];
+
       # use startx as a display manager
       displayManager.startx.enable = true;
       libinput = {
diff --git a/modules/nix.nix b/modules/nix.nix
index dcdbc67..2f29ef0 100644
--- a/modules/nix.nix
+++ b/modules/nix.nix
@@ -10,12 +10,14 @@
   nix = {
     settings = {
       substituters = [
-        "https://cache.vedenemo.dev"
         "https://numtide.cachix.org"
+        "https://nix-gaming.cachix.org"
+        "https://cache.vedenemo.dev"
       ];
       trusted-public-keys = [
-        "cache.vedenemo.dev:8NhplARANhClUSWJyLVk4WMyy1Wb4rhmWW2u8AejH9E="
         "numtide.cachix.org-1:2ps1kLBUWjxIneOy1Ik6cQjb41X0iXVXeHigGmycPPE="
+        "nix-gaming.cachix.org-1:nbjlureqMbRAxR1gJ/f3hxemL9svXaZF/Ees8vCUUs4="
+        "cache.vedenemo.dev:8NhplARANhClUSWJyLVk4WMyy1Wb4rhmWW2u8AejH9E="
       ];
 
       trusted-users = ["root" "@wheel"];