Use prepatched kernel source code from github.com/CachyOS/linux/releases

.github/workflows/auto-update.yml

@@ -66,6 +66,7 @@ jobs:
         run: |
           export TMPDIR=/nix/tmpdir
           nix flake update
+          nix run .#update-kernel-cachyos
           nix run .#update-zfs-cachyos
 
       - name: Commit back to repository

flake.nix

@@ -80,23 +80,30 @@
             # Packages only contain linux-cachyos-* due to Flake schema requirements
             packages = lib.filterAttrs (_: lib.isDerivation) legacyPackages;
 
-            apps.update-zfs-cachyos = {
+            apps =
+              let
+                mkApp = name: script: {
                   type = "app";
                   program =
                     let
                       python = pkgs.python3.withPackages (ps: [ ps.requests ]);
-                  script = pkgs.writeShellApplication {
+                      app = pkgs.writeShellApplication {
-                    name = "update-zfs-cachyos";
+                        inherit name;
                         runtimeInputs = [
                           python
                           pkgs.nix-prefetch-git
                         ];
                         text = ''
-                      python3 ${./zfs-cachyos/update.py}
+                          python3 ${script}
                         '';
                       };
                     in
-                lib.getExe script;
+                    lib.getExe app;
+                };
+              in
+              {
+                update-kernel-cachyos = mkApp "update-lernel-cachyos" ./kernel-cachyos/update.py;
+                update-zfs-cachyos = mkApp "update-zfs-cachyos" ./zfs-cachyos/update.py;
               };
 
             # Allow build unfree modules such as nvidia_x11

kernel-cachyos/default.nix

@@ -2,76 +2,81 @@
   inputs,
   callPackage,
   lib,
-  linux_latest,
+  fetchurl,
-  linux_testing,
-  linux,
   ...
 }:
 let
   mkCachyKernel = callPackage ./mkCachyKernel.nix { inherit inputs; };
+
+  linuxSources = lib.mapAttrs (_: v: {
+    inherit (v) version;
+    src = fetchurl {
+      inherit (v) url hash;
+    };
+  }) (lib.importJSON ./version.json);
 in
 builtins.listToAttrs (
   builtins.map (v: lib.nameValuePair v.pname v) [
     # Latest kernel, provide all LTO/CPU arch variants
     (mkCachyKernel {
       pname = "linux-cachyos-latest";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-x86_64-v2";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       processorOpt = "x86_64-v2";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-x86_64-v3";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       processorOpt = "x86_64-v3";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-x86_64-v4";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       processorOpt = "x86_64-v4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-zen4";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       processorOpt = "zen4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       lto = "thin";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-lto-x86_64-v2";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       lto = "thin";
       processorOpt = "x86_64-v2";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-lto-x86_64-v3";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       lto = "thin";
       processorOpt = "x86_64-v3";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-lto-x86_64-v4";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       lto = "thin";
       processorOpt = "x86_64-v4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-latest-lto-zen4";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos";
       lto = "thin";
       processorOpt = "zen4";
@@ -80,63 +85,63 @@ builtins.listToAttrs (
     # LTS kernel
     (mkCachyKernel {
       pname = "linux-cachyos-lts";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-x86_64-v2";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       processorOpt = "x86_64-v2";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-x86_64-v3";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       processorOpt = "x86_64-v3";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-x86_64-v4";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       processorOpt = "x86_64-v4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-zen4";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       processorOpt = "zen4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-lto";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       lto = "thin";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-lto-x86_64-v2";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       lto = "thin";
       processorOpt = "x86_64-v2";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-lto-x86_64-v3";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       lto = "thin";
       processorOpt = "x86_64-v3";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-lto-x86_64-v4";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       lto = "thin";
       processorOpt = "x86_64-v4";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-lts-lto-zen4";
-      inherit (linux) version src;
+      inherit (linuxSources.lts) version src;
       configVariant = "linux-cachyos-lts";
       lto = "thin";
       processorOpt = "zen4";
@@ -145,40 +150,40 @@ builtins.listToAttrs (
     # Additional CachyOS provided variants
     (mkCachyKernel {
       pname = "linux-cachyos-bmq";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-bmq";
       cpusched = "bmq";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-bmq-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-bmq";
       lto = "thin";
       cpusched = "bmq";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-bore";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-bore";
       cpusched = "bore";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-bore-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-bore";
       lto = "thin";
       cpusched = "bore";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-deckify";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-deckify";
       acpiCall = true;
       handheld = true;
     })
     (mkCachyKernel {
       pname = "linux-cachyos-deckify-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-deckify";
       lto = "thin";
       acpiCall = true;
@@ -186,51 +191,51 @@ builtins.listToAttrs (
     })
     (mkCachyKernel {
       pname = "linux-cachyos-eevdf";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-eevdf";
       cpusched = "eevdf";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-eevdf-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-eevdf";
       cpusched = "eevdf";
       lto = "thin";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-hardened";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-hardened";
       hardened = true;
     })
     (mkCachyKernel {
       pname = "linux-cachyos-hardened-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-hardened";
       hardened = true;
       lto = "thin";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-rc";
-      inherit (linux_testing) version src;
+      inherit (linuxSources.rc) version src;
       configVariant = "linux-cachyos-rc";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-rc-lto";
-      inherit (linux_testing) version src;
+      inherit (linuxSources.rc) version src;
       configVariant = "linux-cachyos-rc";
       lto = "thin";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-rt-bore";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-rt-bore";
       rt = true;
       cpusched = "bore";
     })
     (mkCachyKernel {
       pname = "linux-cachyos-rt-bore-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-rt-bore";
       rt = true;
       cpusched = "bore";
@@ -238,7 +243,7 @@ builtins.listToAttrs (
     })
     (mkCachyKernel {
       pname = "linux-cachyos-server";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-server";
       cpusched = "eevdf";
       hzTicks = "300";
@@ -246,7 +251,7 @@ builtins.listToAttrs (
     })
     (mkCachyKernel {
       pname = "linux-cachyos-server-lto";
-      inherit (linux_latest) version src;
+      inherit (linuxSources.latest) version src;
       configVariant = "linux-cachyos-server";
       cpusched = "eevdf";
       hzTicks = "300";

kernel-cachyos/mkCachyKernel.nix

@@ -83,8 +83,7 @@ lib.makeOverridable (
 
     cachyosConfigFile = "${inputs.cachyos-kernel.outPath}/${configVariant}/config";
     cachyosPatches = builtins.map (p: "${inputs.cachyos-kernel-patches.outPath}/${patchVersion}/${p}") (
-      [ "all/0001-cachyos-base-all.patch" ]
+      (lib.optional (cpusched == "bore") "sched/0001-bore-cachy.patch")
-      ++ (lib.optional (cpusched == "bore") "sched/0001-bore-cachy.patch")
       ++ (lib.optional (cpusched == "bmq") "sched/0001-prjc-cachy.patch")
       ++ (lib.optional hardened "misc/0001-hardened.patch")
       ++ (lib.optional rt "misc/0001-rt-i915.patch")

kernel-cachyos/update.py

@@ -0,0 +1,84 @@
+import json
+from pathlib import Path
+import re
+import subprocess
+
+import requests
+
+
+def get_srctag(variant: str = "latest") -> str:
+    pkgbuild_path = f"linux-cachyos-{variant}" if variant != "latest" else "linux-cachyos"
+    url = f"https://github.com/CachyOS/linux-cachyos/raw/refs/heads/master/{pkgbuild_path}/PKGBUILD"
+    pkgbuild = requests.get(url).text
+
+    script = pkgbuild + "\necho $_srctag"
+    result = subprocess.run(
+        ["bash"],
+        input=script,
+        capture_output=True,
+        text=True,
+        check=True,
+    )
+    return result.stdout.strip()
+
+
+def nix_sha256_to_sri(hash: str) -> str:
+    cmd = ["nix", "hash", "convert", "--hash-algo", "sha256", "--to", "sri", hash]
+
+    print(f"Running command: {' '.join(cmd)}")
+    result = subprocess.run(cmd, capture_output=True, text=True, timeout=300)
+
+    if result.returncode != 0:
+        raise RuntimeError(f"nix hash command failed with return code: {result.returncode}")
+
+    output = result.stdout.strip()
+    if not output:
+        raise RuntimeError("nix hash output is empty")
+
+    return output
+
+
+def run_nix_prefetch_url(url: str) -> str:
+    cmd = ["nix-prefetch-url", url]
+
+    print(f"Running command: {' '.join(cmd)}")
+    result = subprocess.run(cmd, capture_output=True, text=True, timeout=300)
+
+    if result.returncode != 0:
+        raise RuntimeError(f"nix-prefetch-url command failed with return code: {result.returncode}")
+
+    output = result.stdout.strip()
+    if not output:
+        raise RuntimeError("nix-prefetch-url output is empty")
+
+    return output
+
+
+if __name__ == "__main__":
+    versions = {}
+    for variant in ["latest", "lts", "rc"]:
+        print(f"{variant=}")
+        srctag = get_srctag(variant)
+        real_version = "-".join(srctag.split("-")[1:-1])
+        print(f"{srctag=} {real_version=}")
+
+        url = f"https://github.com/CachyOS/linux/releases/download/{srctag}/{srctag}.tar.gz"
+        print(f"{url=}")
+        hash = run_nix_prefetch_url(url)
+        hash = nix_sha256_to_sri(hash)
+        print(f"{hash=}")
+        versions[variant] = {
+            "version": real_version,
+            "url": url,
+            "hash": hash,
+        }
+
+    current = Path.cwd()
+    while not (current / "flake.lock").exists():
+        if current == current.parent:
+            raise RuntimeError("Could not find flake.lock in any parent directory, exiting")
+        current = current.parent
+
+    output_file = current / "kernel-cachyos" / "version.json"
+    with open(output_file, "w", encoding="utf-8") as f:
+        json.dump(versions, f, indent=2)

kernel-cachyos/version.json

@@ -0,0 +1,17 @@
+{
+  "latest": {
+    "version": "6.19.5",
+    "url": "https://github.com/CachyOS/linux/releases/download/cachyos-6.19.5-2/cachyos-6.19.5-2.tar.gz",
+    "hash": "sha256-KgOZl6MTmH4IvuopKArhK2fMzM1E+4zOeq9HeWUPmYY="
+  },
+  "lts": {
+    "version": "6.18.15",
+    "url": "https://github.com/CachyOS/linux/releases/download/cachyos-6.18.15-2/cachyos-6.18.15-2.tar.gz",
+    "hash": "sha256-WpGH+tHh6vipOwqg1ZupEL40KF9FliYVwuOiykEj0Gc="
+  },
+  "rc": {
+    "version": "7.0-rc1",
+    "url": "https://github.com/CachyOS/linux/releases/download/cachyos-7.0-rc1-2/cachyos-7.0-rc1-2.tar.gz",
+    "hash": "sha256-BxeMq0M0C98Wcc9d+GxYVzPNdw6hK4kmj+xW9Ck3mgg="
+  }
+}