Add flake (#1)

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1720031269,
+        "narHash": "sha256-rwz8NJZV+387rnWpTYcXaRNvzUSnnF9aHONoJIYmiUQ=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "9f4128e00b0ae8ec65918efeba59db998750ead6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,54 @@
+{
+  description = "Library and cli tool for querying river";
+
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    version = builtins.replaceStrings ["\n"] [""] (builtins.readFile ./version);
+    system = "x86_64-linux";
+    pkgs = import nixpkgs {inherit system;};
+
+    nativeBuildInputs = with pkgs; [
+      gobject-introspection
+      meson
+      pkg-config
+      ninja
+      vala
+      wayland
+    ];
+
+    buildInputs = with pkgs; [
+      glib
+      json-glib
+    ];
+  in {
+    packages.${system} = rec {
+      default = river;
+      river = pkgs.stdenv.mkDerivation {
+        inherit nativeBuildInputs buildInputs;
+        pname = "astal-river";
+        version = version;
+        src = ./.;
+        outputs = ["out" "dev"];
+      };
+    };
+
+    devShells.${system} = {
+      default = pkgs.mkShell {
+        inherit nativeBuildInputs buildInputs;
+      };
+      river = pkgs.mkShell {
+        inherit nativeBuildInputs;
+        buildInputs =
+          buildInputs
+          ++ [
+            pkgs.gjs
+            self.packages.${system}.default
+          ];
+      };
+    };
+  };
+}