Refactor flake patching/recursion

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

hosts/himalia/hardware/gu605c-spi-cs-gpio/default.nix

@@ -1,5 +1,5 @@
 { pkgs, ... }:
-pkgs.stdenv.mkDerivation rec {
+pkgs.stdenv.mkDerivation (finalAttrs: {
   pname = "asus-gu605c-acpi";
   version = "0.0.1";
 
@@ -17,12 +17,12 @@ pkgs.stdenv.mkDerivation rec {
 
   buildPhase = ''
     mkdir -p kernel/firmware/acpi
-    iasl -we -p kernel/firmware/acpi/${pname} ${src}
-    find kernel | cpio -H newc -o > ${pname}.cpio
+    iasl -we -p kernel/firmware/acpi/${finalAttrs.pname} ${finalAttrs.src}
+    find kernel | cpio -H newc -o > ${finalAttrs.pname}.cpio
   '';
 
   installPhase = ''
     mkdir -p $out
-    cp ${pname}.cpio $out/
+    cp ${finalAttrs.pname}.cpio $out/
   '';
-}
+})