ci: try caching

.forgejo/workflows/build.nix

@@ -1,33 +0,0 @@
-{pkgs?import<nixpkgs>{}}:let
-  stdenv = pkgs.clang19Stdenv;
-  name = "tek";
-  nativeBuildInputs = with pkgs; [ grcov time rustup cloc just pkg-config freetype libclang ];
-  buildInputs = with pkgs; let
-    #suil = pkgs.enableDebugging (pkgs.suil.overrideAttrs (a: b: {
-      #dontStrip = true; separateDebugInfo = true;
-    #}));
-  in [ jack2 lilv serd libclang /*suil*/ glib gtk3 ];
-  VST3_SDK_DIR = "/home/user/Lab/Music/tek/vst3sdk/";
-  LIBCLANG_PATH = "${pkgs.libclang.lib.outPath}/lib";
-  LD_LIBRARY_PATH = pkgs.lib.makeLibraryPath (with pkgs; [
-    pipewire.jack
-    # for ChowKick.lv2:
-    freetype
-    libgcc.lib
-    # for Panagement
-    xorg.libX11
-    xorg.libXcursor
-    xorg.libXi
-    libxkbcommon
-    #suil
-    # for Helm:
-    alsa-lib
-    curl
-    libglvnd
-    #xorg_sys_opengl
-  ]);
-in pkgs.mkShell.override {
-  inherit stdenv;
-} {
-  inherit name nativeBuildInputs buildInputs VST3_SDK_DIR LIBCLANG_PATH LD_LIBRARY_PATH;
-}

.forgejo/workflows/build.yaml

@@ -1,12 +1,25 @@
 on: [push]
 jobs:
   build:
-    container:
-      image: alpine:edge
+    container: { image: "alpine:edge" }
     steps:
-      - run: apk update
-      - run: apk add tree rustup git just cloc build-base clang20-dev pipewire-jack-dev lilv-dev serd-dev
-      - run: git clone --recursive $GITHUB_SERVER_URL/$GITHUB_REPOSITORY .
+
+      - name: install deps
+        run:  apk add --no-cache nodejs tree rustup git just cloc build-base clang20-dev pipewire-jack-dev lilv-dev serd-dev
+
+      - id:   cache
+        name: cache restore
+        uses: https://data.forgejo.org/actions/cache/restore@v4
+        with:
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+
+      - run: git clone --depth 1 --recursive $GITHUB_SERVER_URL/$GITHUB_REPOSITORY .
       - run: whoami && pwd && tree
       - run: cloc src/ && cloc .
       - run: rustup-init -y
@@ -15,3 +28,14 @@ jobs:
       - run: source "$HOME/.cargo/env" && RUSTFLAGS="-Ctarget-feature=-crt-static" just test
       - run: source "$HOME/.cargo/env" && RUSTFLAGS="-Ctarget-feature=-crt-static" just build-release
       - run: tree
+
+      - name: cache save
+        uses: https://data.forgejo.org/actions/cache/save@v4
+        with:
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/