working mesa-git

flake.nix

@@ -94,12 +94,6 @@
         # Use the exact kernel versions as defined in this repo.
         # Guarantees you have binary cache.
         nix-cachyos-kernel.overlays.pinned
-
-        # Alternatively, build the kernels on top of nixpkgs version in your flake.
-        # This might cause version mismatch/build failures!
-        # nix-cachyos-kernel.overlays.default
-
-        # Only use one of the two overlays!
       ];
       
       nixos = with inputs; [
@@ -109,7 +103,7 @@
         home-manager.nixosModules.home-manager
         {
           home-manager = {
-            useGlobalPkgs = true;
+            useGlobalPkgs = false;  # Disabled to allow system-level overlays to work
             useUserPackages = true;
           };
         }

homes/x86_64-linux/andreas@drivebystation-nix/default.nix

@@ -23,6 +23,7 @@ in
     packages = [
       pkgs.nil
       pkgs.beeper
+      pkgs.mpv
       pkgs.my-namespace.udev-steelseries
       pkgs.qbittorrent
       pkgs.hyfetch

modules/home/gnome-customizations/default.nix

@@ -1,5 +1,4 @@
-{ pkgs
+{ config
-, config
 , lib
 , ...
 }:

modules/nixos/performance-tuning/default.nix

@@ -3,7 +3,7 @@
 let
   cfg = config.${namespace}.performance-tuning;
 in {
-  options.${namespace}.performance-tuning.enable = lib.mkEnableOption "XFCE desktop environment";
+  options.${namespace}.performance-tuning.enable = lib.mkEnableOption "performance tuning settings for gaming and general use";
   config = lib.mkIf cfg.enable {
     boot.kernelParams = [
       "nvme_core.default_ps_max_latency_us=0"

overlays/mesa-gcc/default.nix

@@ -1,7 +1,40 @@
 { ... }:
 
 final: prev: {
-  mesa = prev.mesa.overrideAttrs (old: {
+  mesa = (prev.mesa.overrideAttrs (old: rec {
+    version = "git-unstable-2026-02-12";
+    src = prev.fetchFromGitLab {
+      domain = "gitlab.freedesktop.org";
+      owner = "mesa";
+      repo = "mesa";
+      rev = "main";
+      hash = "sha256-5gpLORvbV3skALrQa0VxTJJarYjuq+KyTxDm9HtZNbQ=";
+    };
+    patches = [];
+    buildInputs = old.buildInputs ++ (with prev.llvmPackages_21; [ 
+      clang-unwrapped
+      libclang
+    ]);
+    
+    # Create symlinks to clang libraries so meson can find them
+    preConfigure = (old.preConfigure or "") + ''
+      mkdir -p $NIX_BUILD_TOP/clang-libs
+      for lib in ${prev.llvmPackages_21.clang-unwrapped.lib}/lib/*.a; do
+        ln -sf "$lib" "$NIX_BUILD_TOP/clang-libs/"
+      done
+      export LIBRARY_PATH="$NIX_BUILD_TOP/clang-libs:''${LIBRARY_PATH:-}"
+      export CXXFLAGS="$CXXFLAGS -fno-strict-aliasing"
+    '';
+    
+    mesonFlags = 
+      (builtins.filter (flag: 
+        !(prev.lib.hasPrefix "-Dclang-libdir=" flag) &&
+        flag != "--sysconfdir=/etc"
+      ) old.mesonFlags) ++ [
+      "-Dsysconfdir=${placeholder "out"}/etc"
+    ] ++ (if prev.stdenv.hostPlatform.is64bit then [ "-Dintel-rt=enabled" ] else [ "-Dintel-rt=disabled" ]);
+  })).override {
     stdenv = prev.gcc14Stdenv;
-  });
+  };
 }
+

systems/x86_64-linux/drivebystation-nix/configuration.nix

@@ -13,9 +13,8 @@
     ./hardware/hardware-configuration.nix
   ];
 
-
   # Bootloader.
-  boot.loader.systemd-boot.enable = true;
+  # boot.loader.systemd-boot.enable = true; # managed by lanzaboote
   boot.loader.efi.canTouchEfiVariables = true;
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
   networking.hostName = "drivebystation-nix"; # Define your hostname.

systems/x86_64-linux/drivebystation-nix/default.nix

@@ -10,23 +10,23 @@
   inputs, 
   # Additional metadata is provided by Snowfall Lib.
   # The namespace used for your flake, defaulting to "internal" if not set.
-  namespace, 
+  # namespace, 
   # The system architecture for this host (eg. `x86_64-linux`).
-  system, 
+  # system, 
   # The Snowfall Lib target for this system (eg. `x86_64-iso`).
-  target, 
+  # target, 
   # A normalized name for the system target (eg. `iso`).
-  format, 
+  # format, 
   # A boolean to determine whether this system is a virtual target using nixos-generators.
-  virtual, 
+  # virtual, 
   # An attribute map of your defined hosts.
-  systems, 
+  # systems, 
   # All other arguments come from the system system.
-  config
+  # config,
-, ...
+  ...
 }:
 let
-  inherit (lib.my-namespace) enabled;
+  # inherit (lib.my-namespace) systemPackages;
   inherit pkgs;
   installedPackages = lib.my-namespace.mkPackages pkgs;
 in
@@ -47,6 +47,7 @@ in
       my-namespace.desktop-environment.kde.enable = true;
       my-namespace.desktop-environment.cosmic.enable = true;
       my-namespace.performance-tuning.enable = true;
+      my-namespace.file-organization.enable = true;
       # GNOME-keyring
       my-namespace.gnome-keyring.enable = true;
 
@@ -62,7 +63,7 @@ in
           "gamemode"
         ];
         packages = with pkgs; [
-          # Packages from inputs
+          # Packages from inputsq
           inputs.game-of-life.packages.x86_64-linux.default
           inputs.zen-browser.packages.x86_64-linux.default
           inputs.trilium-next-pr.legacyPackages.x86_64-linux.trilium-next-desktop
@@ -79,8 +80,10 @@ in
           trilium-desktop
           terraform
           virt-manager
+          nil
           #  thunderbird
         ];
+        
       };
 
       programs.anime-game-launcher.enable = true; # Adds launcher and /etc/hosts rules
@@ -133,26 +136,30 @@ in
           # End the session cleanly
           loginctl terminate-session "$XDG_SESSION_ID"
         '')
+        
         (pkgs.writeShellScriptBin "steamos-session-select" ''
           #!/bin/sh
           exec switch-to-desktop
         '')
+
         # Vulkan packages for Steam
-        pkgs.mesa
+        mesa
-        pkgs.vulkan-loader
+        vulkan-loader
-        pkgs.vulkan-validation-layers
+        vulkan-validation-layers
-        pkgs.vulkan-extension-layer
+        vulkan-extension-layer
-        pkgs.vulkan-tools
+        vulkan-tools
-        pkgs.libva
+        libva
-        pkgs.libva-utils
+        libva-utils
         #  vim # Do not forget to add an editor to edit configuration.nix! The Nano editor is also installed by default.
         #  wget
       ]
       ++  installedPackages.packages;
+
       programs.nix-ld = {
         enable = true;
         package = pkgs.nix-ld; #replaces nix-ld-rs
       };
+
       services.flatpak.enable = true;
       systemd.services.flatpak-repo = {
         wantedBy = [ "multi-user.target" ];
@@ -180,6 +187,7 @@ in
 
       # Disable the GNOME3/GDM auto-suspend feature that cannot be disabled in GUI!
       # If no user is logged in, the machine will power down after 20 minutes.
+
       systemd.targets.sleep.enable = false;
       systemd.targets.suspend.enable = false;
       systemd.targets.hibernate.enable = false;

systems/x86_64-linux/drivebystation-nix/hardware/graphics/intel.nix

@@ -18,7 +18,12 @@
   boot.kernelParams = [
     "console=tty0"
     # "efifb=off"
-    # "xe.force_probe=*"
+    "xe.force_probe=e20b"
+    # Xe stability improvements for B580
+    "xe.guc_log_level=0"           # Reduce GuC logging overhead
+    "xe.enable_display=1"          # Ensure display is enabled
+    # Memory/performance parameters
+    "mitigations=off"              # Disable CPU mitigations for better performance
     "module_blacklist=nouveau,nvidia,nvidia_drm,nvidia_modeset,nvidia_uvm"
   ];
 
@@ -48,7 +53,19 @@
   ];
 
   environment.variables = {
+    # Force Intel GPU for all graphics operations
     KWIN_DRM_DEVICES = "/dev/dri/card0";
+    
+    # Vulkan/DXVK optimizations for B580
+    ANV_ENABLE_PIPELINE_CACHE = "1";
+    
+    # Shader cache settings
+    MESA_SHADER_CACHE_DISABLE = "false";
+    MESA_SHADER_CACHE_MAX_SIZE = "10G";
+    
+    # DXVK optimizations
+    DXVK_HUD = "compiler";  # Monitor shader compilation
+    # DXVK_ASYNC = "1";     # Enable if you want async shader compilation (may cause issues)
   };
 
 

systems/x86_64-linux/drivebystation-nix/hardware/hardware-configuration.nix

@@ -7,8 +7,8 @@
   imports = 
     [ 
       (modulesPath + "/installer/scan/not-detected.nix")
-      # ./graphics/intel.nix
+      ./graphics/intel.nix
-      ./graphics/intel_i915.nix
+      # ./graphics/intel_i915.nix
       # ./graphics/nvidia.nix
       ./acer-monitor-edid.nix
       ./samsung-monitor-edid.nix