revert CI

.github/workflows/build-linux.yml

@@ -22,17 +22,45 @@ on:
 jobs:
   build-linux:
     runs-on: ubuntu-latest
+
+    env:
+      CC: ccache clang
+      CXX: ccache clang++
+      CCACHE_DIR: ${{ runner.temp }}/ccache
+
     steps:
       - name: Checkout repository
         uses: actions/checkout@v6
 
-      - name: Install Nix
-        uses: cachix/install-nix-action@v31
+      - name: Install system dependencies
+        uses: daaku/gh-action-apt-install@v4
         with:
-          nix_path: nixpkgs=channel:nixos-unstable
+          packages: build-essential ccache python3 python3-pip ninja-build libsdl2-dev libgl-dev libglu1-mesa-dev libpthread-stubs0-dev patchelf
+
+      - name: Install meson from pip
+        run: |
+          python -m pip install meson
+
+      - name: Restore ccache
+        uses: actions/cache@v4
+        with:
+          path: ${{ runner.temp }}/ccache
+          key: ${{ runner.os }}-ccache-${{ hashFiles('**/meson.build') }}
+          restore-keys: |
+            ${{ runner.os }}-ccache-
+
+      - name: Configure ccache
+        run: ccache -M 5G
+
+      - name: Configure Meson
+        run: meson setup build --wipe --native-file=./scripts/llvm_native.txt
 
       - name: Build
-        run: nix build --print-build-logs
+        run: meson compile -C build -j $(nproc) -v Minecraft.Client
 
-      - name: Flake integrity
-        run: nix flake check
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: minecraft-client-linux-${{ github.sha }}
+          path: build/Minecraft.Client/Minecraft.Client
+          retention-days: 7