deno: fix clang build failure

https://hydra.nixos.org/build/282160517/log/tail

pkgs/by-name/de/deno/package.nix

@@ -12,6 +12,7 @@
   librusty_v8 ? callPackage ./librusty_v8.nix {
     inherit (callPackage ./fetchers.nix { }) fetchLibrustyV8;
   },
+  libffi,
 }:
 
 let
@@ -33,7 +34,10 @@ rustPlatform.buildRustPackage rec {
   postPatch = ''
     # upstream uses lld on aarch64-darwin for faster builds
     # within nix lld looks for CoreFoundation rather than CoreFoundation.tbd and fails
-    substituteInPlace .cargo/config.toml --replace "-fuse-ld=lld " ""
+    substituteInPlace .cargo/config.toml --replace-fail "-fuse-ld=lld " ""
+
+    # Use patched nixpkgs libffi in order to fix https://github.com/libffi/libffi/pull/857
+    substituteInPlace ext/ffi/Cargo.toml --replace-fail "libffi = \"=3.2.0\"" "libffi = { version = \"3.2.0\", features = [\"system\"] }"
   '';
 
   # uses zlib-ng but can't dynamically link yet
@@ -46,7 +50,12 @@ rustPlatform.buildRustPackage rec {
     installShellFiles
   ];
 
-  buildInputs = lib.optionals stdenv.hostPlatform.isDarwin [
+  configureFlags = lib.optionals stdenv.cc.isClang [
+    # This never worked with clang, but became a hard error recently: https://github.com/llvm/llvm-project/commit/3d5b610c864c8f5980eaa16c22b71ff1cf462fae
+    "--disable-multi-os-directory"
+  ];
+
+  buildInputs = [ libffi ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     apple-sdk_11
     # V8 supports 10.15+; binary references `aligned_alloc` directly
     (darwinMinVersionHook "10.15")