diff --git a/pkgs/development/compilers/llvm/14/libcxx/default.nix b/pkgs/development/compilers/llvm/14/libcxx/default.nix
index 8891a69937aba..0a684782d490a 100644
--- a/pkgs/development/compilers/llvm/14/libcxx/default.nix
+++ b/pkgs/development/compilers/llvm/14/libcxx/default.nix
@@ -62,15 +62,6 @@ stdenv.mkDerivation rec {
   buildFlags = lib.optional headersOnly "generate-cxx-headers";
   installTargets = lib.optional headersOnly "install-cxx-headers";
 
-  # At this point, cxxabi headers would be installed in the dev output, which
-  # prevents moveToOutput from doing its job later in the build process.
-  postInstall = lib.optionalString (!headersOnly) ''
-    mv "$dev/include/c++/v1/"* "$out/include/c++/v1/"
-    pushd "$dev"
-    rmdir -p include/c++/v1
-    popd
-  '';
-
   passthru = {
     isLLVM = true;
   };
diff --git a/pkgs/development/compilers/llvm/14/libcxx/gnu-install-dirs.patch b/pkgs/development/compilers/llvm/14/libcxx/gnu-install-dirs.patch
index 0f1d5c411ab8f..bddf55d1e6051 100644
--- a/pkgs/development/compilers/llvm/14/libcxx/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/14/libcxx/gnu-install-dirs.patch
@@ -1,85 +1,21 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index b0569a4a54ca..7d665f5a3258 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -10,6 +10,8 @@ endif()
- #===============================================================================
- cmake_minimum_required(VERSION 3.13.4)
- 
-+include(GNUInstallDirs)
-+
- set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
- 
- # Add path for custom modules
-@@ -415,13 +417,13 @@ if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
+@@ -436,7 +436,7 @@ if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
    set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
    set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
    set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LLVM_BINARY_DIR}/include/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1")
 -  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
 +  set(LIBCXX_INSTALL_LIBRARY_DIR "${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE}" CACHE PATH
        "Path where built libc++ libraries should be installed.")
--  set(LIBCXX_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libc++ runtime libraries should be installed.")
--  set(LIBCXX_INSTALL_INCLUDE_DIR "include/c++/v1" CACHE PATH
-+  set(LIBCXX_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH
-       "Path where target-agnostic libc++ headers should be installed.")
--  set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "include/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1" CACHE PATH
-+  set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${CMAKE_INSTALL_INCLUDEDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1" CACHE PATH
+   set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${CMAKE_INSTALL_INCLUDEDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}/c++/v1" CACHE PATH
        "Path where target-specific libc++ headers should be installed.")
-   if(LIBCXX_LIBDIR_SUBDIR)
-     string(APPEND LIBCXX_LIBRARY_DIR /${LIBCXX_LIBDIR_SUBDIR})
-@@ -431,11 +433,11 @@ elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
-   set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
-   set(LIBCXX_GENERATED_INCLUDE_DIR "${LLVM_BINARY_DIR}/include/c++/v1")
-   set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LIBCXX_GENERATED_INCLUDE_DIR}")
--  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
-+  set(LIBCXX_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
-       "Path where built libc++ libraries should be installed.")
--  set(LIBCXX_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}/c++/v1" CACHE PATH
-       "Path where built libc++ runtime libraries should be installed.")
--  set(LIBCXX_INSTALL_INCLUDE_DIR "include/c++/v1" CACHE PATH
-+  set(LIBCXX_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH
-       "Path where target-agnostic libc++ headers should be installed.")
-   set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${LIBCXX_INSTALL_INCLUDE_DIR}" CACHE PATH
-       "Path where target-specific libc++ headers should be installed.")
-@@ -443,11 +445,11 @@ else()
-   set(LIBCXX_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXX_LIBDIR_SUFFIX})
-   set(LIBCXX_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1")
+@@ -453,7 +453,7 @@ else()
+     set(LIBCXX_GENERATED_INCLUDE_DIR "${CMAKE_BINARY_DIR}/include/c++/v1")
+   endif()
    set(LIBCXX_GENERATED_INCLUDE_TARGET_DIR "${LIBCXX_GENERATED_INCLUDE_DIR}")
 -  set(LIBCXX_INSTALL_LIBRARY_DIR lib${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
-+  set(LIBCXX_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXX_LIBDIR_SUFFIX} CACHE PATH
++  set(LIBCXX_INSTALL_LIBRARY_DIR "${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}" CACHE PATH
        "Path where built libc++ libraries should be installed.")
--  set(LIBCXX_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libc++ runtime libraries should be installed.")
--  set(LIBCXX_INSTALL_INCLUDE_DIR "include/c++/v1" CACHE PATH
-+  set(LIBCXX_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH
-       "Path where target-agnostic libc++ headers should be installed.")
    set(LIBCXX_INSTALL_INCLUDE_TARGET_DIR "${LIBCXX_INSTALL_INCLUDE_DIR}" CACHE PATH
        "Path where target-specific libc++ headers should be installed.")
-diff --git a/cmake/Modules/HandleLibCXXABI.cmake b/cmake/Modules/HandleLibCXXABI.cmake
-index 5a8a4a270a1a..d69405ddeeac 100644
---- a/cmake/Modules/HandleLibCXXABI.cmake
-+++ b/cmake/Modules/HandleLibCXXABI.cmake
-@@ -1,8 +1,9 @@
--
- #===============================================================================
- # Add an ABI library if appropriate
- #===============================================================================
- 
-+include(GNUInstallDirs)
-+
- #
- # _setup_abi: Set up the build to use an ABI library
- #
-@@ -63,7 +64,7 @@ macro(setup_abi_lib abidefines abishared abistatic abifiles abidirs)
- 
-         if (LIBCXX_INSTALL_HEADERS)
-           install(FILES "${LIBCXX_BINARY_INCLUDE_DIR}/${fpath}"
--            DESTINATION include/c++/v1/${dstdir}
-+            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1/${dstdir}"
-             COMPONENT cxx-headers
-             PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-             )
diff --git a/pkgs/development/compilers/llvm/14/libcxxabi/default.nix b/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
index 07aaa2737ceaf..d64708ab040ae 100644
--- a/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/14/libcxxabi/default.nix
@@ -82,6 +82,5 @@ stdenv.mkDerivation rec {
     # the UIUC License (a BSD-like license)":
     license = with lib.licenses; [ mit ncsa ];
     maintainers = llvm_meta.maintainers ++ [ lib.maintainers.vlstill ];
-    broken = true; # TODO: gnu-install-dirs.patch fails to apply
   };
 }
diff --git a/pkgs/development/compilers/llvm/14/libcxxabi/gnu-install-dirs.patch b/pkgs/development/compilers/llvm/14/libcxxabi/gnu-install-dirs.patch
index a93348ded0c10..bd25c903d5bcc 100644
--- a/pkgs/development/compilers/llvm/14/libcxxabi/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/14/libcxxabi/gnu-install-dirs.patch
@@ -1,46 +1,22 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 858f5d5cfd7f..16c67d7062be 100644
+index ecbc7091864e..53ba2dbc3bd1 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -10,6 +10,8 @@ endif()
- 
- cmake_minimum_required(VERSION 3.13.4)
- 
-+include(GNUInstallDirs)
-+
- set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
- 
- # Add path for custom modules
-@@ -213,9 +215,9 @@ set(CMAKE_MODULE_PATH
+@@ -216,7 +216,7 @@ set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
  if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
    set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
    set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
 -  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
 +  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
        "Path where built libc++abi libraries should be installed.")
--  set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libc++abi runtime libraries should be installed.")
    if(LIBCXX_LIBDIR_SUBDIR)
      string(APPEND LIBCXXABI_LIBRARY_DIR /${LIBCXXABI_LIBDIR_SUBDIR})
-@@ -224,16 +226,16 @@ if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
- elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
-   set(LIBCXXABI_HEADER_DIR ${LLVM_BINARY_DIR})
-   set(LIBCXXABI_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
--  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
-+  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
-       "Path where built libc++abi libraries should be installed.")
--  set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libc++abi runtime libraries should be installed.")
- else()
-   set(LIBCXXABI_HEADER_DIR ${CMAKE_BINARY_DIR})
-   set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
+@@ -230,7 +230,7 @@ else()
+     set(LIBCXXABI_HEADER_DIR ${CMAKE_BINARY_DIR})
+     set(LIBCXXABI_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBCXXABI_LIBDIR_SUFFIX})
+   endif()
 -  set(LIBCXXABI_INSTALL_LIBRARY_DIR lib${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
 +  set(LIBCXXABI_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBCXXABI_LIBDIR_SUFFIX} CACHE PATH
        "Path where built libc++abi libraries should be installed.")
--  set(LIBCXXABI_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBCXXABI_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libc++abi runtime libraries should be installed.")
  endif()
  
diff --git a/pkgs/development/compilers/llvm/14/libunwind/default.nix b/pkgs/development/compilers/llvm/14/libunwind/default.nix
index 109b92f1e027e..c6d9eda5e4749 100644
--- a/pkgs/development/compilers/llvm/14/libunwind/default.nix
+++ b/pkgs/development/compilers/llvm/14/libunwind/default.nix
@@ -43,6 +43,5 @@ stdenv.mkDerivation rec {
       I). It is a dependency of the C++ ABI library, and sometimes is a
       dependency of other runtimes.
     '';
-    broken = true; # TODO: gnu-install-dirs.patch fails to apply
   };
 }
diff --git a/pkgs/development/compilers/llvm/14/libunwind/gnu-install-dirs.patch b/pkgs/development/compilers/llvm/14/libunwind/gnu-install-dirs.patch
index 3f05d2a87269c..3fce8bf903430 100644
--- a/pkgs/development/compilers/llvm/14/libunwind/gnu-install-dirs.patch
+++ b/pkgs/development/compilers/llvm/14/libunwind/gnu-install-dirs.patch
@@ -1,65 +1,21 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index e3cc66dd2226..1299b596ce0d 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -8,6 +8,8 @@ endif()
- 
- cmake_minimum_required(VERSION 3.13.4)
- 
-+include(GNUInstallDirs)
-+
- set(LLVM_COMMON_CMAKE_UTILS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
- 
- # Add path for custom modules
-@@ -139,25 +141,27 @@ set(CMAKE_MODULE_PATH
+@@ -147,7 +147,7 @@ set(LIBUNWIND_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
  
  if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
    set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
 -  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
-+  set(LIBUNWIND_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/${LLVM_DEFAULT_TARGET_TRIPLE}" CACHE PATH
-+      "Path where built libunwind headers should be installed.")
 +  set(LIBUNWIND_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
        "Path where built libunwind libraries should be installed.")
--  set(LIBUNWIND_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBUNWIND_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libunwind runtime libraries should be installed.")
    if(LIBCXX_LIBDIR_SUBDIR)
      string(APPEND LIBUNWIND_LIBRARY_DIR /${LIBUNWIND_LIBDIR_SUBDIR})
-     string(APPEND LIBUNWIND_INSTALL_LIBRARY_DIR /${LIBUNWIND_LIBDIR_SUBDIR})
+@@ -159,7 +159,7 @@ else()
+   else()
+     set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBUNWIND_LIBDIR_SUFFIX})
    endif()
--elseif(LLVM_LIBRARY_OUTPUT_INTDIR)
--  set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
--  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LIBUNWIND_LIBDIR_SUFFIX} CACHE PATH
--      "Path where built libunwind libraries should be installed.")
--  set(LIBUNWIND_INSTALL_RUNTIME_DIR bin CACHE PATH
--      "Path where built libunwind runtime libraries should be installed.")
- else()
--  set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBUNWIND_LIBDIR_SUFFIX})
 -  set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LIBUNWIND_LIBDIR_SUFFIX} CACHE PATH
-+  if(LLVM_LIBRARY_OUTPUT_INTDIR)
-+    set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
-+  else()
-+    set(LIBUNWIND_LIBRARY_DIR ${CMAKE_BINARY_DIR}/lib${LIBUNWIND_LIBDIR_SUFFIX})
-+  endif()
-+  set(LIBUNWIND_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}" CACHE PATH
-+      "Path where built libunwind headers should be installed.")
 +  set(LIBUNWIND_INSTALL_LIBRARY_DIR ${CMAKE_INSTALL_LIBDIR}${LIBUNWIND_LIBDIR_SUFFIX} CACHE PATH
        "Path where built libunwind libraries should be installed.")
--  set(LIBUNWIND_INSTALL_RUNTIME_DIR bin CACHE PATH
-+  set(LIBUNWIND_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
-       "Path where built libunwind runtime libraries should be installed.")
  endif()
  
-diff --git a/include/CMakeLists.txt b/include/CMakeLists.txt
-index c3bb1dd0f69f..adf1766c44cb 100644
---- a/include/CMakeLists.txt
-+++ b/include/CMakeLists.txt
-@@ -14,7 +14,7 @@ if(LIBUNWIND_INSTALL_HEADERS)
-   foreach(file ${files})
-     get_filename_component(dir ${file} DIRECTORY)
-     install(FILES ${file}
--      DESTINATION "include/${dir}"
-+      DESTINATION "${LIBUNWIND_INSTALL_INCLUDE_DIR}/${dir}"
-       COMPONENT unwind-headers
-       PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
-     )