Add wally

flake.nix

@@ -24,6 +24,11 @@
       system = "x86_64-linux";
       pkgs = import nixpkgs {
         inherit system;
+	overlays = [
+          (final: prev: {
+	    keymapp = prev.callPackage ./wally-cli {};
+	  })
+	];
       };
     in
     {

home.nix

@@ -33,6 +33,7 @@ in
     htop
     neofetch
     topgrade
+    keymapp
 
     amberol
     carla

wally-cli/default.nix

@@ -0,0 +1,30 @@
+{ lib, stdenv, requireFile, pkg-config, autoPatchelfHook, libusb1, webkitgtk }:
+
+stdenv.mkDerivation rec {
+  pname = "keymapp";
+  version = "2.1.3";
+
+  src = requireFile {
+    url = "https://github.com/zsa/wally/releases/download/${version}-linux/wally";
+    sha256 = "owyXTC/VRJdeSPfyrJmiH5Nvo+CAOv7rEJaCanmv294=";
+  };
+  dontUnpack = true;
+
+  nativeBuildInputs = [ autoPatchelfHook ];
+
+  buildInputs = [ libusb1 webkitgtk ];
+
+  installPhase = ''
+  runHook preInstall
+  install -m755 -D $src $out/bin/wally
+  runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "A tool to flash firmware to mechanical keyboards";
+    homepage = "https://www.zsa.io/flash/";
+    platforms = with platforms; linux ++ darwin;
+    license = licenses.mit;
+    maintainers = with maintainers; [ spacekookie r-burns ];
+  };
+}