initial mac nixos config

hosts/mac-nixos/apple-silicon-support/packages/asahi-fwextract/default.nix

@@ -0,0 +1,32 @@
+{ lib
+, python3
+, fetchFromGitHub
+, gzip
+, gnutar
+, lzfse
+}:
+
+python3.pkgs.buildPythonApplication rec {
+  pname = "asahi-fwextract";
+  version = "0.6.9";
+
+  # tracking version: https://github.com/AsahiLinux/PKGBUILDs/blob/main/asahi-fwextract/PKGBUILD
+  src = fetchFromGitHub {
+    owner = "AsahiLinux";
+    repo = "asahi-installer";
+    rev = "v${version}";
+    hash = "sha256-MkNi4EBgT4gfev/yWqYyw5HZxewj6XTfb8na+eI2iVo=";
+  };
+
+  postPatch = ''
+    substituteInPlace asahi_firmware/img4.py \
+      --replace 'liblzfse.so' '${lzfse}/lib/liblzfse.so'
+    substituteInPlace asahi_firmware/update.py \
+      --replace '"tar"' '"${gnutar}/bin/tar"' \
+      --replace '"xf"' '"-x", "-I", "${gzip}/bin/gzip", "-f"'
+  '';
+
+  nativeBuildInputs = [ python3.pkgs.setuptools ];
+
+  doCheck = false;
+}