diff --git a/pkgs/os-specific/darwin/cctools/apfs.patch b/pkgs/os-specific/darwin/cctools/apfs.patch
deleted file mode 100644
index 8c6b3c0d273..00000000000
--- a/pkgs/os-specific/darwin/cctools/apfs.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-diff --git a/cctools/ld64/src/ld/OutputFile.cpp b/cctools/ld64/src/ld/OutputFile.cpp
-index 8859882..158c7d2 100644
---- a/cctools/ld64/src/ld/OutputFile.cpp
-+++ b/cctools/ld64/src/ld/OutputFile.cpp
-@@ -2786,7 +2786,7 @@ void OutputFile::writeOutputFile(ld::Internal& state)
- #ifdef __APPLE__ // ld64-port
- 			struct statfs fsInfo;
- 			if ( statfs(_options.outputFilePath(), &fsInfo) != -1 ) {
--				if ( strcmp(fsInfo.f_fstypename, "hfs") == 0) {
-+				if ( (strcmp(fsInfo.f_fstypename, "hfs") == 0) || (strcmp(fsInfo.f_fstypename, "apfs") == 0) ) {
- 					(void)unlink(_options.outputFilePath());
- 					outputIsMappableFile = true;
- 				}
-@@ -2814,7 +2814,7 @@ void OutputFile::writeOutputFile(ld::Internal& state)
- #ifdef __APPLE__ // ld64-port
- 			struct statfs fsInfo;
- 			if ( statfs(dirPath, &fsInfo) != -1 ) {
--				if ( strcmp(fsInfo.f_fstypename, "hfs") == 0) {
-+				if ( (strcmp(fsInfo.f_fstypename, "hfs") == 0) || (strcmp(fsInfo.f_fstypename, "apfs") == 0) ) {
- 					outputIsMappableFile = true;
- 				}
- 			}
diff --git a/pkgs/os-specific/darwin/cctools/ld-rpath-nonfinal.patch b/pkgs/os-specific/darwin/cctools/ld-rpath-nonfinal.patch
deleted file mode 100644
index 265d0d30477..00000000000
--- a/pkgs/os-specific/darwin/cctools/ld-rpath-nonfinal.patch
+++ /dev/null
@@ -1,31 +0,0 @@
-diff --git a/cctools/ld64/src/ld/Options.cpp b/cctools/ld64/src/ld/Options.cpp
-index 9250016..91d54ec 100644
---- a/cctools/ld64/src/ld/Options.cpp
-+++ b/cctools/ld64/src/ld/Options.cpp
-@@ -4175,23 +4175,9 @@ void Options::checkIllegalOptionCombinations()
- 		throw "-r and -dead_strip cannot be used together";
- 
- 	// can't use -rpath unless targeting 10.5 or later
--	if ( fRPaths.size() > 0 ) {
--		if ( !minOS(ld::mac10_5, ld::iOS_2_0) )
--			throw "-rpath can only be used when targeting Mac OS X 10.5 or later";
--		switch ( fOutputKind ) {
--			case Options::kDynamicExecutable:
--			case Options::kDynamicLibrary:
--			case Options::kDynamicBundle:
--				break;
--			case Options::kStaticExecutable:
--			case Options::kObjectFile:
--			case Options::kDyld:
--			case Options::kPreload:
--			case Options::kKextBundle:
--				throw "-rpath can only be used when creating a dynamic final linked image";
--		}
--	}
--	
-+	if ( fRPaths.size() > 0 && !minOS(ld::mac10_5, ld::iOS_2_0) )
-+		throw "-rpath can only be used when targeting Mac OS X 10.5 or later";
-+
- 	if ( fPositionIndependentExecutable ) {
- 		switch ( fOutputKind ) {
- 			case Options::kDynamicExecutable:
diff --git a/pkgs/os-specific/darwin/cctools/port.nix b/pkgs/os-specific/darwin/cctools/port.nix
index cb49bd023ce..6b8f26c8e66 100644
--- a/pkgs/os-specific/darwin/cctools/port.nix
+++ b/pkgs/os-specific/darwin/cctools/port.nix
@@ -18,24 +18,29 @@ assert (!stdenv.hostPlatform.isDarwin) -> maloader != null;
 
 let
   baseParams = rec {
-    pname = "${targetPrefix}cctools-port";
-    version = "895";
+    name = "${targetPrefix}cctools-port";
+    version = "927.0.2";
 
     src = fetchFromGitHub {
       owner  = "tpoechtrager";
       repo   = "cctools-port";
-      rev    = "07619027f8311fa61b4a549c75994b88739a82d8";
-      sha256 = "12g94hhz5v5bmy2w0zb6fb4bjlmn992gygc60h9nai15kshj2spi";
+      rev    = "8239a5211bcf07d6b9d359782e1a889ec1d7cce5";
+      sha256 = "0h8b1my0wf1jyjq63wbiqkl2clgxsf87f6i4fjhqs431fzlq8sac";
     };
 
     outputs = [ "out" "dev" ];
 
-    nativeBuildInputs = [ autoconf automake libtool autoreconfHook ];
+    nativeBuildInputs = [ autoconf automake ]
+
+      # TODO: remove on next hash change, libtool is unnecessary with autoreconfHook
+      ++ stdenv.lib.optional (stdenv.targetPlatform == stdenv.hostPlatform) libtool
+
+      ++ [ autoreconfHook ];
     buildInputs = [ libuuid ]
       ++ stdenv.lib.optionals stdenv.isDarwin [ libcxxabi libobjc ]
       ++ stdenv.lib.optional enableTapiSupport libtapi;
 
-    patches = [ ./ld-rpath-nonfinal.patch ./ld-ignore-rpath-link.patch ./apfs.patch ];
+    patches = [ ./ld-ignore-rpath-link.patch ];
 
     __propagatedImpureHostDeps = [
       # As far as I can tell, otool from cctools is the only thing that depends on these two, and we should fix them
diff --git a/pkgs/os-specific/darwin/libtapi/default.nix b/pkgs/os-specific/darwin/libtapi/default.nix
index e68e77f55af..cac2d97482a 100644
--- a/pkgs/os-specific/darwin/libtapi/default.nix
+++ b/pkgs/os-specific/darwin/libtapi/default.nix
@@ -1,18 +1,19 @@
-{ lib, stdenv, fetchFromGitHub, cmake, python }:
+{ lib, stdenv, fetchFromGitHub, cmake, python, clang_6 }:
 
 stdenv.mkDerivation {
-  name = "libtapi";
+  name = "libtapi-1000.10.8";
   src = fetchFromGitHub {
     owner = "tpoechtrager";
     repo = "apple-libtapi";
-    rev = "e56673694db395e25b31808b4fbb9a7005e6875f";
-    sha256 = "1lnl1af9sszp9wxfk0wljrpdmwcx83j0w5c0y4qw4pqrdkdgwks7";
+    rev = "cd9885b97fdff92cc41e886bba4a404c42fdf71b";
+    sha256 = "1a19h39a48agvnmal99n9j1fjadiqwib7hfzmn342wmgh9z3vk0g";
   };
 
   nativeBuildInputs = [ cmake python ];
+  buildInputs = [ clang_6.cc ];
 
   preConfigure = ''
-    cd src/apple-llvm/src
+    cd src/llvm
   '';
 
   cmakeFlags = [ "-DLLVM_INCLUDE_TESTS=OFF" ];