Add a Nix flake to build the CLI.

.gitignore

@@ -1,3 +1,4 @@
+/result
 .direnv/
 coverage/
 debug/

default.nix

@@ -0,0 +1,17 @@
+{ lib, rustPlatform }:
+
+rustPlatform.buildRustPackage rec {
+  pname = "steam-rss";
+  version = "0.2.2";
+  src = ./.;
+  cargoLock.lockFile = ./Cargo.lock;
+
+  meta = with lib; {
+    description = "Get RSS feeds for Steam games";
+    homepage = "https://github.com/Bauke/steam-rss";
+    changelog = "https://github.com/Bauke/steam-rss/releases/tag/${version}";
+    license = with licenses; [ agpl3Plus ];
+    maintainers = with maintainers; [ Bauke ];
+    mainProgram = "steam-rss";
+  };
+}

flake.nix

@@ -4,14 +4,22 @@
     rust-overlay.url = "github:oxalica/rust-overlay";
   };
 
-  outputs = { self, nixpkgs, flake-utils, rust-overlay }:
-    flake-utils.lib.eachDefaultSystem (system:
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      rust-overlay,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
       let
         overlays = [ (import rust-overlay) ];
         pkgs = import nixpkgs { inherit system overlays; };
       in
       {
         devShells.default = import ./shell.nix { inherit pkgs; };
+        packages.default = pkgs.callPackage ./. { };
       }
     );
 }