Replace shell.nix and defualt.nix with flakes

default.nix

@@ -1,22 +0,0 @@
-{ pkgs ? import <nixpkgs> { } }:
-with pkgs;
-
-rustPlatform.buildRustPackage rec {
-  name = "rustybar";
-  version = "0.1";
-  src = ./.;
-  cargoLock.lockFile = ./Cargo.lock;
-  RUSTC_BOOTSTRAP = 1;
-  doCheck = false;
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ dbus ];
-
-  meta = with lib; {
-    homepage = "https://github.com/mildlyfunctionalgays/rustybar";
-    description = "swaybar/i3bar command in Rust";
-    maintainers = with maintainers; [ artemist ];
-    license = with licenses; [ mit ];
-    platforms = platforms.linux;
-  };
-}
-

flake.lock

@@ -0,0 +1,43 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1637186689,
+        "narHash": "sha256-NU7BhgnwA/3ibmCeSzFK6xGi+Bari9mPfn+4cBmyEjw=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "7fad01d9d5a3f82081c00fb57918d64145dc904c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "utils": "utils"
+      }
+    },
+    "utils": {
+      "locked": {
+        "lastModified": 1637014545,
+        "narHash": "sha256-26IZAc5yzlD9FlDT54io1oqG/bBoyka+FJk5guaX4x4=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "bba5dcc8e0b20ab664967ad83d24d64cb64ec4f4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,45 @@
+{
+  description = "sway/i3bar command in Rust";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, utils }:
+    let
+      supportedSystems = nixpkgs.lib.platforms.unix;
+    in
+    utils.lib.eachSystem supportedSystems (system:
+      let pkgs = import nixpkgs { inherit system; };
+      in
+      rec {
+        packages.rustybar = with pkgs; rustPlatform.buildRustPackage rec {
+          name = "rustybar";
+          version = "0.1";
+          src = ./.;
+          cargoLock.lockFile = ./Cargo.lock;
+          RUSTC_BOOTSTRAP = 1;
+          doCheck = false;
+          nativeBuildInputs = [ pkgconfig ];
+          buildInputs = [ dbus ];
+
+          meta = with lib; {
+            homepage = "https://github.com/mildlyfunctionalgays/rustybar";
+            description = "swaybar/i3bar command in Rust";
+            maintainers = with maintainers; [ artemist ];
+            license = with licenses; [ mit ];
+            platforms = supportedSystems;
+          };
+        };
+        defaultPackage = packages.rustybar;
+
+        apps.rustybar = utils.lib.mkApp { drv = packages.rustybar; };
+        defaultApp = apps.rustybar;
+
+        devShells.rustybar = with pkgs; mkShell {
+          packages = [ pkgconfig dbus rustup ];
+        };
+        devShell = devShells.rustybar;
+      });
+}

shell.nix

@@ -1,8 +0,0 @@
-{ pkgs ? import <nixpkgs> { } }:
-
-with pkgs; stdenv.mkDerivation {
-  name = "rustybar-env";
-  nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ dbus rustup ];
-}
-