add export to use all cores

.gitea/workflows/build-kernel.yaml

@@ -30,8 +30,16 @@ jobs:
         env:
           PATH: /nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:/bin:/sbin:/usr/bin:/usr/sbin
 
+      - name: Prepare kernel artifacts
+        run: |
+          mkdir result-writable
+          cp -rL result/lib/modules/6.6.63/kernel result-writable/kernel
+          sudo chmod -R u+rwX,g+rwX,o+rX result-writable
+          tar -czf custom-kernel.tar.gz -C result-writable .
+          rm -rf result-writable
+
       - name: Upload kernel artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: custom-kernel
-          path: ./result
+          path: ./custom-kernel.tar.gz

.gitignore

@@ -1,2 +1,3 @@
 /result
+/result-writable
 custom-kernel.tar.gz

README.md

@@ -2,6 +2,7 @@
 
 On a NIX machine:
 ```bash
+export NIX_BUILD_CORES=0
 nix-build '<nixpkgs/nixos>' -A config.system.build.kernel --arg configuration ./custom-kernel.nix
 ```
 
@@ -9,13 +10,11 @@ nix-build '<nixpkgs/nixos>' -A config.system.build.kernel --arg configuration ./
 
 1. Create a tarball of the built kernel:
 ```bash
-tar -czf custom-kernel.tar.gz -C result .
+mkdir result-writable
+cp -rL result/lib/modules/6.6.63/kernel result-writable/kernel
+sudo chmod -R u+rwX,g+rwX,o+rX result-writable
+tar -czf custom-kernel.tar.gz -C result-writable .
+rm -rf result-writable
 ```
 
-2. Upload the tarball as an artifact to Gitea:
+2. Create a new release on Gitea and upload the tarball
-```bash
-curl -X POST -H "Content-Type: application/octet-stream" \
-     -H "Authorization: token YOUR_GITEA_TOKEN" \
-     --data-binary @custom-kernel.tar.gz \
-     "https://gitea.example.com/api/v1/repos/your-username/your-repo/releases/YOUR_RELEASE_ID/assets?name=custom-kernel.tar.gz"
-```

custom-kernel.nix

@@ -12,5 +12,12 @@
         VIDEO_OV5693 y
       '';
     }
+    # cameras patch from linux-surface
+    {
+      name = "cameras-patch";
+      patch  = null;
+      url = "https://github.com/linux-surface/linux-surface/raw/master/patches/6.12/0012-cameras.patch";
+      sha256 = "sha256-0759cl1xq3jdq6hd97y8gx8671g0y899b7azv623bzxjf1jz40ng";
+    }
   ];
-}
+}