Add NIX flake package

README.md

@@ -1,14 +1,18 @@
 # activate-linux for Wayland
+
 The "Activate Windows" watermark ported to Linux with Gtk Layer Shell
 
 # Linux
 
 ## Dependencies
+
 This project depends on:
+
 - `gtk-3.0` (on some distros also `libgtk-3-dev`)
 - `gtk-layer-shell` and any [supported wayland compositor](https://github.com/wmww/gtk-layer-shell#supported-desktops)
 
 ## Building
+
 ```
 make
 ```
@@ -20,3 +24,34 @@ make
 This project is in the AUR under [activate-linux-wayland-git](https://aur.archlinux.org/packages/activate-linux-wayland-git)
 
 Install it using your favorite AUR helper.
+
+### NixOS
+
+#### NixOS installation with Flakes
+
+Just import flake and use `defaultPackage`.
+
+```nix
+{
+  ........
+  inputs.activate-linux = {
+    url = "github:Kljunas2/activate-linux";
+    inputs.nixpkgs.follows = "nixpkgs"; # not mandatory but recommended
+  };
+  ........
+
+  outputs = { self, nixpkgs, activate-linux }: {
+      ........
+      modules = [
+        ({ self, ... }: {
+          environment.systemPackages = with pkgs; [
+            ........
+            activate-linux.defaultPackage.xf86_64-linux
+            ........
+          ];
+        })
+      ];
+    };
+  };
+}
+```

flake.lock

@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1652875358,
+        "narHash": "sha256-mIUPX/wMS6ASa1AshLPOvKj8HvjwK4rnlLiaJBUOhRc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "51c998bdd9f0d6e809cf31acb95cccb627075004",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1652776076,
+        "narHash": "sha256-gzTw/v1vj4dOVbpBSJX4J0DwUR6LIyXo7/SuuTJp1kM=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "04c1b180862888302ddfb2e3ad9eaa63afc60cf8",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,25 @@
+{
+  description = "Activate Linux watermark for wayland";
+
+  inputs.utils.url = "github:numtide/flake-utils";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs";
+
+  outputs = { self, nixpkgs, utils }:
+    utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system:
+      let pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        packages.activate-linux = pkgs.stdenv.mkDerivation {
+          pname = "activate-linux";
+          version = "0.0.1";
+          src = ./.;
+          nativeBuildInputs = with pkgs; [ pkg-config ];
+          buildInputs = with pkgs; [ gtk3 gtk-layer-shell ];
+          installPhase = ''
+            mkdir -p $out/bin
+            cp bin/activate-linux $out/bin/activate-linux
+          '';
+        };
+
+        defaultPackage = self.packages.${system}.activate-linux;
+      });
+}