transition to nixos stable

README.md

@@ -0,0 +1,61 @@
+# NixOS configuration
+
+The default package set is NixOS 26.05. Home Manager and AAGL use their
+matching 26.05 release branches. `drivebystation-nix` uses the standard
+`pkgs.linuxPackages` kernel from stable, including matching external modules.
+
+## Packages from unstable
+
+`inputs.nixpkgs-unstable` is a separate package set, pinned in `flake.lock`.
+Select individual applications explicitly, as with Trilium and JetBrains
+Toolbox in the desktop host:
+
+```nix
+unstablePkgs.trilium-desktop
+```
+
+The host defines `unstablePkgs` by importing the separate input with
+`allowUnfree = true`. Use `pkgs.<name>` for stable packages. Unstable
+applications retain their own dependencies; the system package set stays on
+stable.
+
+Update the stable inputs and the application exceptions independently:
+
+```sh
+nix flake update nixpkgs home-manager aagl
+nix flake update nixpkgs-unstable
+```
+
+The existing Mutter tearing override remains experimental. Its compatibility
+and B580 graphics behavior require testing when changing the desktop stack.
+
+## Validate and boot
+
+```sh
+nix build .#nixosConfigurations.drivebystation-nix.config.system.build.toplevel --no-link
+sudo nixos-rebuild boot --flake .#drivebystation-nix
+```
+
+Only run the boot command after the build succeeds. Keep the previous working
+generation available in the boot menu, then test networking, graphics, and
+the webcam loopback after reboot. Git restores configuration sources; booting
+the previous generation restores the previous system closure.
+
+Whole-flake checks currently also evaluate an unfinished WSL host referencing
+the disabled `nixos-wsl` input. Validate the desktop target directly until that
+separate host configuration is repaired.
+
+## Migration validation (2026-10-17)
+
+The complete `drivebystation-nix` system built successfully without activation.
+Its closure contains Linux 6.18.56, patched Mutter 50.5, GNOME Shell 50.5,
+libdrm 2.4.133, r8125 9.016.01, and v4l2loopback 0.15.3. The explicit unstable
+applications are Trilium 0.106.0 and JetBrains Toolbox 3.8.1.88030.
+
+Nix syntax and Git whitespace checks pass. `nix flake check --no-build` stops
+at the existing WSL input error described above. The edited Nix files retain
+the repository's existing formatting; `nixpkgs-fmt --check` reports formatting
+differences, including on the original flake before migration.
+
+Boot, networking, B580 graphics, and tearing behavior still require runtime
+testing. The migration does not add Intel tearing kernel patches.

flake.lock

@@ -60,15 +60,16 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1787517695,
+        "lastModified": 1789138195,
-        "narHash": "sha256-Z119G3qLJx22frNHO3/seMs7fCCvxe9NJJRfN4Jadew=",
+        "narHash": "sha256-cvK9QXAzcgYYg6WsMSfzSE78QyCbNoRMF25GIZ0pz1s=",
         "owner": "ezKEa",
         "repo": "aagl-gtk-on-nix",
-        "rev": "4bb57072d963aa47f14894383a5560cf290e296a",
+        "rev": "decd5655d94eec05b6d5beacb9a652f8ca95344e",
         "type": "github"
       },
       "original": {
         "owner": "ezKEa",
+        "ref": "release-26.05",
         "repo": "aagl-gtk-on-nix",
         "type": "github"
       }
@@ -159,22 +160,6 @@
       }
     },
     "flake-compat_3": {
-      "flake": false,
-      "locked": {
-        "lastModified": 1767039857,
-        "narHash": "sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns=",
-        "owner": "NixOS",
-        "repo": "flake-compat",
-        "rev": "5edf11c44bc78a0d334f6334cdaf7d60d732daab",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-compat_4": {
       "flake": false,
       "locked": {
         "lastModified": 1650374568,
@@ -190,24 +175,6 @@
         "type": "github"
       }
     },
-    "flake-parts": {
-      "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
-      },
-      "locked": {
-        "lastModified": 1788306937,
-        "narHash": "sha256-lbrI1UYVpFgKSsyrU9oeF7FHfnu8nLD9ja0ou9f2rxk=",
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "rev": "f16b25b8c3d2809b87925d0b76652d7821a75c68",
-        "type": "github"
-      },
-      "original": {
-        "owner": "hercules-ci",
-        "repo": "flake-parts",
-        "type": "github"
-      }
-    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -309,15 +276,16 @@
         ]
       },
       "locked": {
-        "lastModified": 1788355065,
+        "lastModified": 1791938526,
-        "narHash": "sha256-gAz5oTI7ur34CfuakQduiQd/2ZhO62Bn2XXg08nZYYQ=",
+        "narHash": "sha256-yNYK2pdk3bCtJrpblrNYA6hZKdybWUeyTtx74+OEJFo=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d9d750e4fc11c10cab2da677bdd31e427f3a3a71",
+        "rev": "32904dfe1cf86039f3c8c9f41f94e1cfd76dbb34",
         "type": "github"
       },
       "original": {
         "owner": "nix-community",
+        "ref": "release-26.05",
         "repo": "home-manager",
         "type": "github"
       }
@@ -442,39 +410,18 @@
         "type": "github"
       }
     },
-    "nix-cachyos-kernel": {
-      "inputs": {
-        "flake-compat": "flake-compat_3",
-        "flake-parts": "flake-parts",
-        "nixpkgs": "nixpkgs"
-      },
-      "locked": {
-        "lastModified": 1788379544,
-        "narHash": "sha256-EMfRomvn1lAErvY/Q3bQL+PwEi+5hbBwI0ZI5SRC/WM=",
-        "owner": "xddxdd",
-        "repo": "nix-cachyos-kernel",
-        "rev": "d1c3cadc796061778cf7f62bdbfaf68cf3c3c654",
-        "type": "github"
-      },
-      "original": {
-        "owner": "xddxdd",
-        "ref": "release",
-        "repo": "nix-cachyos-kernel",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1788329703,
+        "lastModified": 1791883866,
-        "narHash": "sha256-fHvRW4JUchuw6QNzQ50BfzeYe0TnjKml1V8PVRjntSI=",
+        "narHash": "sha256-yvkDdToRZ4IgPc9tSBzzCYJvTLf8n5eE3rgUkpCuD5A=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "090e478bd64824e2122328df47a7efb74fdaf0c1",
+        "rev": "a033e66ab94a6bedf2c3d58d93a36319d3cbbbaf",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-unstable-small",
+        "ref": "nixos-26.05",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -495,28 +442,13 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
+    "nixpkgs-unstable": {
       "locked": {
-        "lastModified": 1788057806,
+        "lastModified": 1791956154,
-        "narHash": "sha256-DTQSMxzDWmT0zhguthvegnVkn7CFqGCv4IHCzk5ZUpM=",
+        "narHash": "sha256-jBYGPi4udQ9uo4KQp9m2J0546nJVQitG15gvZSaVVAs=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "596e2e3940e09b2abbeb03f75fa1828c57fcd72c",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1788179007,
-        "narHash": "sha256-hn1oU2rue2SYK8dAr8+WNZWtbsz1S2W5mnHlSEuh3bo=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "34ab99075ac4f7e40cf037eef32cb1c360bb85e9",
+        "rev": "55bfb4d7437bd4e09ab7cba58a43bd68eb310044",
         "type": "github"
       },
       "original": {
@@ -526,7 +458,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_3": {
+    "nixpkgs_2": {
       "locked": {
         "lastModified": 1789286504,
         "narHash": "sha256-eiEK7cKZORNEvX0GeF3RtNEF/JXhgf2RqSp3230q13E=",
@@ -589,8 +521,8 @@
         "home-manager": "home-manager",
         "lanzaboote": "lanzaboote",
         "millennium": "millennium",
-        "nix-cachyos-kernel": "nix-cachyos-kernel",
+        "nixpkgs": "nixpkgs",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs-unstable": "nixpkgs-unstable",
         "simple-wallpaper-engine": "simple-wallpaper-engine",
         "snowfall-lib": "snowfall-lib",
         "sops-nix": "sops-nix",
@@ -606,11 +538,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785476452,
+        "lastModified": 1785907205,
-        "narHash": "sha256-/CXwCFPS41rb/JI2VitKCgVK6V5E6/sfw5ke3B9zyVQ=",
+        "narHash": "sha256-Ds1vTi53af4wDMAveSR/K0JnywDslLwmgwhVIiwnNmY=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "6ef009bf4c4873cdc1a621826722bdea7c03e62c",
+        "rev": "c5cb13481d718fac906aa9cfd85f9b60e1a546cb",
         "type": "github"
       },
       "original": {
@@ -663,7 +595,7 @@
     },
     "snowfall-lib": {
       "inputs": {
-        "flake-compat": "flake-compat_4",
+        "flake-compat": "flake-compat_3",
         "flake-utils-plus": "flake-utils-plus",
         "nixpkgs": [
           "nixpkgs"
@@ -792,7 +724,7 @@
         "glslang-WallpaperEngine": "glslang-WallpaperEngine",
         "json": "json",
         "kissfft": "kissfft",
-        "nixpkgs": "nixpkgs_3",
+        "nixpkgs": "nixpkgs_2",
         "quickjs": "quickjs",
         "stb": "stb"
       },

flake.nix

@@ -3,7 +3,9 @@
 
   inputs = {
     # nixpkgs.url = "github:nixos/nixpkgs/nixos-24.05";
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable"; # Use nixos-unstable for latest kernel and packages
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-26.05";
+    # Application exceptions; keep the system and graphics stack on stable.
+    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
     # nixos-wsl = {
     #   url = "github:nix-community/NixOS-WSL/main";
     #   inputs.nixpkgs.follows = "nixpkgs";
@@ -27,7 +29,7 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
     home-manager = {
-      url = "github:nix-community/home-manager";
+      url = "github:nix-community/home-manager/release-26.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
     # anikki = {
@@ -43,10 +45,9 @@
     #   inputs.nixpkgs.follows = "nixpkgs";
     # };
     aagl = {
-      url = "github:ezKEa/aagl-gtk-on-nix";
+      url = "github:ezKEa/aagl-gtk-on-nix/release-26.05";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    nix-cachyos-kernel.url = "github:xddxdd/nix-cachyos-kernel/release";
     wallpaperengine.url = "path:/home/andreas/Projects/linwallpaap/linux-wallpaperengine";
     simple-wallpaper-engine = {
       url = "github:Maxnights/simple-linux-wallpaperengine-gui";
@@ -100,9 +101,6 @@
       src = ./.;
       
       overlays = with inputs; [
-        # Use the exact kernel versions as defined in this repo.
-        # Guarantees you have binary cache.
-        nix-cachyos-kernel.overlays.pinned
         inputs.millennium.overlays.default
       ];
       

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

@@ -15,6 +15,9 @@
   ];
 
 
+  # Use the default kernel maintained by the stable nixpkgs release.
+  boot.kernelPackages = pkgs.linuxPackages;
+
   # Bootloader.
   # boot.loader.systemd-boot.enable = true; # managed by lanzaboote
   boot.loader.efi.canTouchEfiVariables = true;
@@ -266,7 +269,7 @@
 
   services.mullvad-vpn = {
     enable = true;
-    gui.enable = true;
+    package = pkgs.mullvad-vpn;
   };
 
   fonts = {

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

@@ -29,6 +29,11 @@ let
   # inherit (lib.my-namespace) systemPackages;
   inherit pkgs;
   installedPackages = lib.my-namespace.mkPackages pkgs;
+  # Explicit application exceptions; all other packages use stable pkgs.
+  unstablePkgs = import inputs.nixpkgs-unstable {
+    system = pkgs.stdenv.hostPlatform.system;
+    config.allowUnfree = true;
+  };
 in
 {
   # inherit system;
@@ -87,7 +92,7 @@ in
           spotify
           appimage-run  
           prismlauncher #replaces broken minecraft package
-          trilium-desktop
+          unstablePkgs.trilium-desktop
           terraform
           virt-manager
           nil
@@ -170,7 +175,7 @@ in
         my-namespace.cs-demo-manager
         vscode-modernized
         zed-editor
-        jetbrains-toolbox
+        unstablePkgs.jetbrains-toolbox
 
         (pkgs.writeShellScriptBin "switch-to-desktop" ''
           #!/bin/sh

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

@@ -14,11 +14,7 @@
       ./acer-monitor-edid.nix
       ./samsung-monitor-edid.nix
     ];
-  # boot.kernelPackages = pkgs.linuxPackages_latest;
-  boot.kernelPackages = pkgs.cachyosKernels.linuxPackages-cachyos-latest;
   hardware.enableRedistributableFirmware = true;
-  # boot.kernelPackages = pkgs.linuxKernel.packages.linux_xanmod_latest;
-  # boot.kernelPackages = pkgs.linuxPackages;
   boot.loader.efi.canTouchEfiVariables = true;  
   boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
   boot.kernelModules = [ "kvm-amd" "r8125" "4vl2loopback" ];