Move to Nix

.envrc

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

.github/workflows/ci.yml

@@ -15,46 +15,30 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v1
-
-      - name: Setup
-        run: rustup component add clippy rustfmt
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
 
       - name: Format
-        run: cargo fmt -- --check
+        run: nix build -L .#fmt
 
       - name: Clippy
-        run: cargo clippy -- -Dwarnings
+        run: nix build -L .#clippy
 
       - name: cargo-deny
-        uses: EmbarkStudios/cargo-deny-action@v1
-
-  build-and-test:
-    name: Build and Test
-    runs-on: ubuntu-latest
+        run: nix develop --command cargo-deny check
 
-    steps:
-      - uses: actions/checkout@v1
-
-      - name: Build and Test
-        run: cargo test
+      - name: Test
+        run: nix build -L .#test
 
-  release:
-    name: Release
-    if: ${{ github.ref_type == 'tag' }}
+  build:
+    name: Build
     needs:
-      - build-and-test
       - formatting-and-quality
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
 
       - name: Build
-        run: cargo build --release
-
-      - name: Publish release
-        uses: softprops/action-gh-release@v1
-        with:
-          files: target/release/git-collage
-          fail_on_unmatched_files: true
+        run: nix build -L

.gitignore

@@ -1 +1,2 @@
 /target
+result

flake.nix

@@ -0,0 +1,91 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs";
+
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    naersk = {
+      url = "github:nix-community/naersk";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, flake-utils, fenix, naersk }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = (import nixpkgs) {
+          inherit system;
+        };
+
+        toolchain = fenix.packages.${system}.toolchainOf {
+          channel = "1.72";
+          date = "2023-09-19";
+          sha256 = "dxE7lmCFWlq0nl/wKcmYvpP9zqQbBitAQgZ1zx9Ooik=";
+        };
+
+        naersk' = pkgs.callPackage naersk {
+          cargo = toolchain.rust;
+          rustc = toolchain.rust;
+        };
+
+        cargo = builtins.fromTOML ( builtins.readFile ./Cargo.toml );
+        name = cargo.package.name;
+        version = cargo.package.version;
+
+        nativeBuildInputs = with pkgs; [ pkg-config ];
+        buildInputs = with pkgs; [ openssl ];
+
+      in {
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = nativeBuildInputs ++ [ toolchain.toolchain ];
+          buildInputs = buildInputs;
+          packages = with pkgs; [ cargo-deny ];
+        };
+
+        packages = rec {
+          default = naersk'.buildPackage {
+            name = name;
+            version = version;
+
+            src = ./.;
+
+            nativeBuildInputs = nativeBuildInputs;
+            buildInputs = buildInputs;
+          };
+
+          fmt = naersk'.buildPackage {
+            src = ./.;
+
+            nativeBuildInputs = nativeBuildInputs;
+            buildInputs = buildInputs;
+
+            mode = "fmt";
+          };
+
+          clippy = naersk'.buildPackage {
+            src = ./.;
+
+            nativeBuildInputs = nativeBuildInputs;
+            buildInputs = buildInputs;
+
+            mode = "clippy";
+          };
+
+          test = naersk'.buildPackage {
+            src = ./.;
+
+            nativeBuildInputs = nativeBuildInputs;
+            buildInputs = buildInputs;
+
+            mode = "test";
+
+            # Ensure detailed test output appears in nix build log
+            cargoTestOptions = x: x ++ ["1>&2"];
+          };
+        };
+      }
+    );
+}