Add CI and Nix flake

.envrc

@@ -0,0 +1 @@
+use flake

.github/workflows/build_nix.yml

@@ -0,0 +1,31 @@
+on: push
+name: "Build Nix package on Ubuntu"
+
+env:
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v23
+      - name: Building package
+        run:  nix build
+      - name: Get repository name
+        run: echo "REPO_NAME=${GITHUB_REPOSITORY#*/}" >> $GITHUB_ENV
+      - name: Get commit hash
+        run:  echo "COMMIT_HASH=${GITHUB_SHA::6}" >> $GITHUB_ENV
+      - uses: actions/upload-artifact@v3
+        with:
+          name: ${{ env.REPO_NAME }}-${{ env.COMMIT_HASH }}-x86_64-linux
+          path: result/bin/${{ env.REPO_NAME }}
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v23
+      - name: Lint
+        run: nix develop --command cargo clippy --all-targets --all-features
+      - name: Test
+        run: nix develop --command cargo test

.gitignore

@@ -1 +1,2 @@
 /target
+.direnv

flake.lock

@@ -0,0 +1,95 @@
+{
+  "nodes": {
+    "naersk": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1697664192,
+        "narHash": "sha256-nRTG3rYEGFV2+putRiC96+kNXDyKaPJgT6K/1FWN7yo=",
+        "owner": "nix-community",
+        "repo": "naersk",
+        "rev": "636a9b5dd7f2ad7d7c3af929ecf95e4d4fab9e97",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "ref": "master",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1697915759,
+        "narHash": "sha256-WyMj5jGcecD+KC8gEs+wFth1J1wjisZf8kVZH13f1Zo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "51d906d2341c9e866e48c2efcaac0f2d70bfd43e",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1697915759,
+        "narHash": "sha256-WyMj5jGcecD+KC8gEs+wFth1J1wjisZf8kVZH13f1Zo=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "51d906d2341c9e866e48c2efcaac0f2d70bfd43e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs_2",
+        "utils": "utils"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,36 @@
+{
+  inputs = {
+    naersk.url = "github:nix-community/naersk/master";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, utils, naersk }:
+    utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        naersk-lib = pkgs.callPackage naersk { };
+
+        nativeBuildInputs = with pkgs; [ pkg-config alsaLib ];
+        buildInputs = with pkgs; [ openssl ];
+      in {
+        packages.default = naersk-lib.buildPackage {
+          src = ./.;
+          inherit nativeBuildInputs buildInputs;
+        };
+        devShells.default = with pkgs;
+          mkShell {
+            buildInputs = [
+              cargo
+              rustc
+              rustfmt
+              pre-commit
+              rustPackages.clippy
+              rust-analyzer
+            ] ++ buildInputs;
+            inherit nativeBuildInputs;
+
+            RUST_SRC_PATH = rustPlatform.rustLibSrc;
+          };
+      });
+}