nixos: change kernel from LTS to CachyOS-x86_64-v3-LTO

flake.lock

@@ -161,6 +161,22 @@
       }
     },
     "flake-compat_4": {
+      "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_5": {
       "locked": {
         "lastModified": 1733328505,
         "narHash": "sha256-NeCCThCEP3eCl2l/+27kNNK7QrwZB1IJCrXfrbv5oqU=",
@@ -210,6 +226,24 @@
         "type": "github"
       }
     },
+    "flake-parts_3": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib_3"
+      },
+      "locked": {
+        "lastModified": 1782949081,
+        "narHash": "sha256-vp6Y/Grm98ESt6ceOkWiHWyZRDV3J1RID4w+6NWK9yA=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "17c9d6cdfc60c64f4ee8d306f9bc0b4ccb51481e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -372,6 +406,26 @@
         "type": "github"
       }
     },
+    "nix-cachyos-kernel": {
+      "inputs": {
+        "flake-compat": "flake-compat_3",
+        "flake-parts": "flake-parts_2",
+        "nixpkgs": "nixpkgs_7"
+      },
+      "locked": {
+        "lastModified": 1785302044,
+        "narHash": "sha256-r5/EBWjE58+7k8D8KD7Xj2OzrJ6Qak3QOqJVyCcFLy0=",
+        "owner": "xddxdd",
+        "repo": "nix-cachyos-kernel",
+        "rev": "3ca5db0202822769c2f0b96dfb8eab8c95484795",
+        "type": "github"
+      },
+      "original": {
+        "owner": "xddxdd",
+        "repo": "nix-cachyos-kernel",
+        "type": "github"
+      }
+    },
     "nix-darwin": {
       "inputs": {
         "nixpkgs": [
@@ -411,10 +465,10 @@
     },
     "nix-gaming": {
       "inputs": {
-        "flake-compat": "flake-compat_3",
+        "flake-compat": "flake-compat_4",
-        "flake-parts": "flake-parts_2",
+        "flake-parts": "flake-parts_3",
         "git-hooks": "git-hooks_2",
-        "nixpkgs": "nixpkgs_7"
+        "nixpkgs": "nixpkgs_8"
       },
       "locked": {
         "lastModified": 1785207248,
@@ -476,6 +530,21 @@
         "type": "github"
       }
     },
+    "nixpkgs-lib_3": {
+      "locked": {
+        "lastModified": 1782614948,
+        "narHash": "sha256-ePjCwr1sNm9NYUqywL7QfK3JnlS015msC+eBu2zKlp8=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "db3f255737b94216eb71cce308e2912cf6bc2d7c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1785090369,
@@ -510,9 +579,9 @@
     },
     "nixpkgs-xr": {
       "inputs": {
-        "flake-compat": "flake-compat_4",
+        "flake-compat": "flake-compat_5",
         "flake-utils": "flake-utils_2",
-        "nixpkgs": "nixpkgs_9",
+        "nixpkgs": "nixpkgs_10",
         "nvfetcher": "nvfetcher",
         "systems": "systems_2",
         "treefmt-nix": "treefmt-nix_2"
@@ -547,6 +616,22 @@
         "type": "github"
       }
     },
+    "nixpkgs_11": {
+      "locked": {
+        "lastModified": 1785090369,
+        "narHash": "sha256-m0pDuRJG7EDo9ri+4Ksu83VsI+PlxNC9lNBfydejce4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "624af665418d3c65d544145b4d34ad696439570e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1784497964,
@@ -628,6 +713,22 @@
       }
     },
     "nixpkgs_7": {
+      "locked": {
+        "lastModified": 1785210918,
+        "narHash": "sha256-uY/UYA3tWnXga7h0xSuwGWvpu0Fl1LrKVu2l7DY4JR4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "29a3e341634615ff16f700e9a1fdbc9c42f0198c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable-small",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_8": {
       "locked": {
         "lastModified": 1784872115,
         "narHash": "sha256-THPEF2po0fsoH8gNtp+Ae0XFDJH3N/ol7xO3v6VMTJU=",
@@ -643,7 +744,7 @@
         "type": "github"
       }
     },
-    "nixpkgs_8": {
+    "nixpkgs_9": {
       "locked": {
         "lastModified": 1785133411,
         "narHash": "sha256-Yjv0WEg39KRYS0rBdTbu6Fc/or/ihAKk13W9sQ6VWd0=",
@@ -659,22 +760,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_9": {
-      "locked": {
-        "lastModified": 1785090369,
-        "narHash": "sha256-m0pDuRJG7EDo9ri+4Ksu83VsI+PlxNC9lNBfydejce4=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "624af665418d3c65d544145b4d34ad696439570e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nvfetcher": {
       "inputs": {
         "flake-compat": [
@@ -746,10 +831,11 @@
         "home-manager": "home-manager",
         "lazyvim": "lazyvim",
         "millennium": "millennium",
+        "nix-cachyos-kernel": "nix-cachyos-kernel",
         "nix-darwin": "nix-darwin",
         "nix-flatpak": "nix-flatpak",
         "nix-gaming": "nix-gaming",
-        "nixpkgs": "nixpkgs_8",
+        "nixpkgs": "nixpkgs_9",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nixpkgs-xr": "nixpkgs-xr",
         "scopebuddy": "scopebuddy"
@@ -774,7 +860,7 @@
     },
     "scopebuddy": {
       "inputs": {
-        "nixpkgs": "nixpkgs_10"
+        "nixpkgs": "nixpkgs_11"
       },
       "locked": {
         "lastModified": 1784658606,

flake.nix

@@ -29,6 +29,8 @@
     scopebuddy.url = "github:HikariKnight/ScopeBuddy";
     nix-gaming.url = "github:fufexan/nix-gaming";
     nixpkgs-xr.url = "github:nix-community/nixpkgs-xr";
+
+    nix-cachyos-kernel.url = "github:xddxdd/nix-cachyos-kernel";
   };
 
   outputs =
@@ -42,6 +44,7 @@
       affinity-nix,
       affinity-thumbnailer-kde,
       millennium,
+      nix-cachyos-kernel,
       ...
     }:
     let

hosts/shared/nixos.nix

@@ -19,6 +19,9 @@ in
 
     consoleLogLevel = 3;
 
+    # Use latest LTO optimized x86_64-v3 kernel from CachyOS.
+    kernelPackages = pkgs.cachyosKernels.linuxPackages-cachyos-latest-lto-x86_64-v3;
+
     extraModulePackages = [ config.boot.kernelPackages.kvmfr ];
 
     kernelParams = [
@@ -257,8 +260,8 @@ in
   nixpkgs = {
     config.allowUnfree = true;
     overlays = [
-      # Disable temporarily as CDN is down for downloads causing build failures.
       inputs.affinity-nix.overlays.default
+      inputs.nix-cachyos-kernel.overlays.default
     ];
   };