Nix support

.github/workflows/documentation.yml

@@ -7,42 +7,33 @@ jobs:
   doc:
     name: Documentation
     runs-on: ubuntu-22.04
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}/valib
-    permissions:
-      id-token: write
-      pages: write
     steps:
-      - name: Install dependencies
-        if: startsWith(matrix.os, 'ubuntu')
-        run: |
-          sudo apt-get update
-          sudo apt-get install -y libasound2-dev libgl-dev libjack-dev libx11-xcb-dev  libxcb1-dev libxcb-dri2-0-dev libxcb-icccm4-dev libxcursor-dev libxkbcommon-dev libxcb-shape0-dev libxcb-xfixes0-dev
-      - uses: actions/cache@v2
-        with:
-          path: |
-            ~/.cargo/registry/index/
-            ~/.cargo/registry/cache/
-            ~/.cargo/git/db/
-            target/
-          key: ${{ matrix.name }}-${{ matrix.cross-target }}
+      - name: Install Nix
+        uses: cachix/install-nix-action@v25
+      - name: Cache Nix derivations
+        uses: DeterminateSystems/magic-nix-cache-action@v2
       - uses: actions/checkout@v2
       - name: Fetch all git history
         run: git fetch --force --prune --tags --unshallow
-      - name: Set up Rust toolchain
-        uses: actions-rs/toolchain@v1
       - name: Build documentation
-        run: cargo doc --all-features --no-deps
+        run: nix build .#workspace.doc
       - name: Fix permissions
         run: |
-          chmod -c -R +rX "target/doc" | while read line; do
+          chmod -c -R +rX "_site/" | while read line; do
             echo "::warning title=Invalid file permissions automatically fixed::$line"
           done
       - name: Upload Pages artifact
-        uses: actions/upload-pages-artifact@v3
-        with:
-          path: target/doc
+        uses: actions/upload-pages-artifact@v2
+  doc-deploy:
+    needs: doc
+    permissions:
+      pages: write      # to deploy to Pages
+      id-token: write   # to verify the deployment originates from an appropriate source
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4 # or specific "vX.X.X" version tag for this action
+        uses: actions/deploy-pages@v4 # or specific "vX.X.X" version tag for this action

flake.nix

@@ -0,0 +1,89 @@
+{
+  inputs = {
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nix-community/naersk";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    nixpkgs-mozilla = {
+      url = "github:mozilla/nixpkgs-mozilla";
+      flake = false;
+    };
+  };
+
+  outputs = { self, flake-utils, naersk, nixpkgs, nixpkgs-mozilla }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = (import nixpkgs) {
+          inherit system;
+          overlays = [ (import nixpkgs-mozilla) ];
+        };
+        inherit (pkgs) lib stdenv;
+
+        toolchain = (pkgs.rustChannelOf {
+          toolchain = ./rust-toolchain;
+          sha256 = "sha256-2Af13p12CWwmppsdujS1EeCQ41u0rMzJmqNh7WQ2QKM=";
+        }).rust;
+        naersk' = pkgs.callPackage naersk {
+          cargo = toolchain;
+          rustc = toolchain;
+        };
+
+        package' = { pname, display-name, gui ? false, vst3 ? false, clap ? false }:
+          naersk'.buildPackage {
+            name = pname;
+            nativeBuildInputs = with pkgs; [ pkg-config python3 ];
+            buildInputs = if gui then
+              with pkgs;
+              with pkgs.xorg; [
+                jack2
+                libGL
+              ] ++ lib.optionals (!stdenv.isDarwin) [
+                alsa-lib
+                libX11
+                libxcb
+                libXcursor
+                xcbutilwm
+              ]
+            else
+              [ ];
+            src = ./.;
+            cargoBuildOptions = opts: [ "-p ${pname}" ] ++ opts;
+            CREATE_VST3 = vst3;
+            CREATE_CLAP = clap;
+            postInstall = ''
+              OUT_DIR=''${PWD}/target/release
+              LIBNAME=''${OUT_DIR}/lib${pname}.so
+              EXENAME=''${OUT_DIR}/${pname}
+
+              pwd
+              ls -alh
+              ls -alh $PWD/target
+              ls -alh $OUT_DIR
+              ls $LIBNAME $EXENAME
+
+              if [[ -f $LIBNAME ]]; then
+                mkdir -p $out/lib/{vst3,clap}
+                if (( ''${CREATE_VST3} )); then
+                  cp ''${LIBNAME} $out/lib/vst3/${display-name}.vst3
+                fi
+                if (( ''${CREATE_CLAP} )); then
+                  cp ''${LIBNAME} $out/lib/clap/${display-name}.clap
+                fi
+              fi
+            '';
+          };
+      in rec {
+        packages.valib = naersk'.buildPackage {
+          src = ./.;
+          doDoc = true;
+        };
+        packages.abrasive = package' {
+          pname = "abrasive";
+          display-name = "Abrasive";
+          gui = true;
+          vst3 = true;
+          clap = true;
+        };
+        defaultPackage = packages.valib;
+        apps.abrasive = flake-utils.lib.mkApp { drv = packages.abrasive; };
+      });
+}