feat: adding the asahi configuration

hosts/asahi/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 = "0.7.8";
+
+  # tracking version: https://packages.fedoraproject.org/pkgs/asahi-installer/python3-asahi_firmware/
+  src = fetchFromGitHub {
+    owner = "AsahiLinux";
+    repo = "asahi-installer";
+    rev = "v${version}";
+    hash = "sha256-UmgHWKIRbcg9PK44YPPM4tyuEDC0+ANKO3Mzc4N9RHo=";
+  };
+
+  postPatch = ''
+    substituteInPlace asahi_firmware/img4.py \
+      --replace 'liblzfse.so' '${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;
+}