oculante: don't depend on cargoDeps internal directory naming

pkgs/by-name/oc/oculante/libaom-sys-0.17.2+libaom.3.11.0-cmake-nasm-fix.patch

@@ -1,5 +1,5 @@
---- a/libaom-sys-0.17.2+libaom.3.11.0/vendor/build/cmake/aom_optimization.cmake
-+++ b/libaom-sys-0.17.2+libaom.3.11.0/vendor/build/cmake/aom_optimization.cmake
+--- a/vendor/build/cmake/aom_optimization.cmake
++++ b/vendor/build/cmake/aom_optimization.cmake
 @@ -212,7 +212,7 @@ endfunction()
  # Currently checks only for presence of required object formats and support for
  # the -Ox argument (multipass optimization).

pkgs/by-name/oc/oculante/package.nix

@@ -67,17 +67,11 @@ rustPlatform.buildRustPackage (finalAttrs: {
     "--skip=thumbnails::test_thumbs" # broken as of v0.9.2
   ];
 
-  patches = [
-    # The below patch is needed to fix this build, until the upstream dependency (libavif-rs) fixes the problem.
-    # The explicit `patchFlags` can also be removed when this patch becomes obsolete.
-    # <https://github.com/njaard/libavif-rs/issues/122>
-    ./libaom-sys-0.17.2+libaom.3.11.0-cmake-nasm-fix.patch
-  ];
-
-  patchFlags = [
-    "-p1"
-    "--directory=../${finalAttrs.pname}-${finalAttrs.version}-vendor/source-registry-0"
-  ];
+  # The below patch is needed to fix this build, until the upstream dependency (libavif-rs) fixes the problem.
+  # <https://github.com/njaard/libavif-rs/issues/122>
+  postPatch = ''
+    patch -p1 -d "$cargoDepsCopy"/*/libaom-sys-0.17.2+libaom.3.11.0 -i ${./libaom-sys-0.17.2+libaom.3.11.0-cmake-nasm-fix.patch}
+  '';
 
   postInstall = ''
     install -Dm444 $src/res/icons/icon.png $out/share/icons/hicolor/128x128/apps/oculante.png