Add first flake test

flake.lock

@@ -0,0 +1,77 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1709126324,
+        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "import-cargo": {
+      "locked": {
+        "lastModified": 1594305518,
+        "narHash": "sha256-frtArgN42rSaEcEOYWg8sVPMUK+Zgch3c+wejcpX3DY=",
+        "owner": "edolstra",
+        "repo": "import-cargo",
+        "rev": "25d40be4a73d40a2572e0cc233b83253554f06c5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "import-cargo",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1709237383,
+        "narHash": "sha256-cy6ArO4k5qTx+l5o+0mL9f5fa86tYUX3ozE1S+Txlds=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "1536926ef5621b09bba54035ae2bb6d806d72ac8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "import-cargo": "import-cargo",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,42 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+    import-cargo.url = "github:edolstra/import-cargo";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, import-cargo }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = import nixpkgs { inherit system; };
+        inherit (import-cargo.builders) importCargo;
+      in {
+        packages.default = pkgs.stdenv.mkDerivation {
+          name = "trvcontrol";
+          src = self;
+
+          nativeBuildInputs = with pkgs; [
+            # setupHook which makes sure that a CARGO_HOME with vendored dependencies
+            # exists
+            (importCargo {
+              lockFile = ./Cargo.lock;
+              inherit pkgs;
+            }).cargoHome
+
+            # Build-time dependencies
+            rustc
+            cargo
+          ];
+
+          buildPhase = ''
+            cargo build --release --offline
+          '';
+
+          installPhase = ''
+            install -Dm775 ./target/release/trvcontrol $out/bin/trvcontrol
+          '';
+
+        };
+
+      });
+}