otfcc: fix aarch64 compatibility

pkgs/tools/misc/otfcc/default.nix

@@ -13,16 +13,16 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [ premake5 ];
 
-  # Don’t guess where our makefiles will end up. Just use current
-  # directory.
-  patchPhase = ''
-    substituteInPlace premake5.lua \
-      --replace 'location "build/gmake"' 'location "."'
-  '';
+  patches = [
+    ./fix-aarch64.patch
+    ./move-makefiles.patch
+  ];
+
+  buildFlags = stdenv.lib.optional stdenv.isAarch64 [ "config=release_arm" ];
 
   installPhase = ''
     mkdir -p $out/bin
-    cp bin/release-x*/otfcc* $out/bin/
+    cp bin/release-*/otfcc* $out/bin/
   '';
 
   enableParallelBuilding = true;
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     description = "Optimized OpenType builder and inspector";
     homepage = "https://github.com/caryll/otfcc";
     license = licenses.asl20;
-    platforms = [ "i686-linux" "x86_64-linux" "x86_64-darwin" ];
+    platforms = [ "aarch64-linux" "i686-linux" "x86_64-linux" "x86_64-darwin" ];
     maintainers = with maintainers; [ jfrankenau ttuegel ];
   };