Add nix support (#9)

add nix support via a flake.
Flake tested and builds successfully.

.gitignore

@@ -2,3 +2,4 @@
 .cache
 build
 compile_commands.json
+result

README.md

@@ -29,6 +29,8 @@ My personal blazingly fast and efficient status bar + widgets, in case anyone fi
     ```
     ninja -C build && sudo ninja -C build install
     ```
+## Nix
+You can install the nix flake in a number of ways, either through your system/home flake or simply running nix build to get the binary directly.
 
 ## Building and installation (AUR)
 For Arch systems, gBar can be found on the AUR.

flake.lock

@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1676283394,
+        "narHash": "sha256-XX2f9c3iySLCw54rJ/CZs+ZK6IQy7GXNY4nSOyu2QG4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "3db36a8b464d0c4532ba1c7dda728f4576d6d073",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1677262115,
+        "narHash": "sha256-DPkHiJw2QnKYAzQXBlwelwghxbcD5oigK2kLPHMpMQ8=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "806075be2bdde71895359ed18cb530c4d323e6f6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,49 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils, ... }: flake-utils.lib.eachSystem ["x86_64-linux"] (system:
+    let
+      pkgs = import nixpkgs {
+        inherit system;
+      };
+
+      gbar = (with pkgs; stdenv.mkDerivation {
+
+        name = "gbar";
+
+        src = ./.;
+
+        nativeBuildInputs = [
+          pkg-config
+          meson
+          cmake
+          ninja
+        ];
+        buildInputs = [
+          wayland
+          bluez
+          gtk3
+          gtk-layer-shell
+          libpulseaudio
+        ];
+
+
+      });
+    in rec {
+      defaultApp = flake-utils.lib.mkApp {
+        drv = defaultPackage;
+      };
+      defaultPackage = gbar;
+      devShell = pkgs.mkShell {
+        buildInputs = [
+          gbar
+        ];
+      };
+    }
+
+  );
+}
+