Merge commit 'bc9df0f66110039e495b6debe3a6cda4a1bb0fed'

20 files changed, 70 insertions, 200 deletions

diff --git a/nixpkgs/pkgs/development/compilers/llvm/3.7/libc++/default.nix b/nixpkgs/pkgs/development/compilers/llvm/3.7/libc++/default.nix
index 462e35a483f4..7b7ac7297ba3 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/3.7/libc++/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/3.7/libc++/default.nix
@@ -43,5 +43,6 @@ stdenv.mkDerivation rec {
     description = "A new implementation of the C++ standard library, targeting C++11";
     license = with stdenv.lib.licenses; [ ncsa mit ];
     platforms = stdenv.lib.platforms.unix;
+    badPlatforms = [ "x86_64-darwin" ];
   };
 }
diff --git a/nixpkgs/pkgs/development/compilers/llvm/3.9/llvm.nix b/nixpkgs/pkgs/development/compilers/llvm/3.9/llvm.nix
index 6c935fd88de5..174cb17908cc 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/3.9/llvm.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/3.9/llvm.nix
@@ -22,10 +22,13 @@ assert (stdenv.hostPlatform != stdenv.buildPlatform) -> !enableSharedLibraries;
 let
   src = fetch "llvm" "1vi9sf7rx1q04wj479rsvxayb6z740iaz3qniwp266fgp5a07n8z";
 
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with stdenv.lib;
-    concatStringsSep "." (take 2 (splitString "." version));
-in stdenv.mkDerivation rec {
+  # Used when creating a versioned symlinks of libLLVM.dylib
+  versionSuffixes = with stdenv.lib;
+    let parts = splitString "." version; in
+    imap (i: _: concatStringsSep "." (take i parts)) parts;
+in
+
+stdenv.mkDerivation {
   name = "llvm-${version}";
 
   unpackPhase = ''
@@ -153,8 +156,9 @@ in stdenv.mkDerivation rec {
   + stdenv.lib.optionalString (stdenv.isDarwin && enableSharedLibraries) ''
     substituteInPlace "$out/lib/cmake/llvm/LLVMExports-release.cmake" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLLVM.dylib" "$lib/lib/libLLVM.dylib"
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${version}.dylib
+    ${stdenv.lib.concatMapStringsSep "\n" (v: ''
+      ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${v}.dylib
+    '') versionSuffixes}
   '';
 
   enableParallelBuilding = true;
diff --git a/nixpkgs/pkgs/development/compilers/llvm/4/lld.nix b/nixpkgs/pkgs/development/compilers/llvm/4/lld.nix
index 21b0c1c3601c..cf6de26a9e83 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/4/lld.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/4/lld.nix
@@ -27,5 +27,6 @@ stdenv.mkDerivation {
     homepage    = http://lld.llvm.org/;
     license     = stdenv.lib.licenses.ncsa;
     platforms   = stdenv.lib.platforms.all;
+    badPlatforms = [ "x86_64-darwin" ];
   };
 }
diff --git a/nixpkgs/pkgs/development/compilers/llvm/4/llvm.nix b/nixpkgs/pkgs/development/compilers/llvm/4/llvm.nix
index 5cd7901fe22c..ecb18a580540 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/4/llvm.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/4/llvm.nix
@@ -19,10 +19,13 @@
 let
   src = fetch "llvm" "0l9bf7kdwhlj0kq1hawpyxhna1062z3h7qcz2y8nfl9dz2qksy6s";
 
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with stdenv.lib;
-    concatStringsSep "." (take 2 (splitString "." release_version));
-in stdenv.mkDerivation (rec {
+  # Used when creating a versioned symlinks of libLLVM.dylib
+  versionSuffixes = with stdenv.lib;
+    let parts = splitString "." release_version; in
+    imap (i: _: concatStringsSep "." (take i parts)) parts;
+in
+
+stdenv.mkDerivation (rec {
   name = "llvm-${version}";
 
   unpackPhase = ''
@@ -136,8 +139,9 @@ in stdenv.mkDerivation (rec {
   + stdenv.lib.optionalString (stdenv.isDarwin && enableSharedLibraries) ''
     substituteInPlace "$out/lib/cmake/llvm/LLVMExports-${if debugVersion then "debug" else "release"}.cmake" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLLVM.dylib" "$lib/lib/libLLVM.dylib"
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
+    ${stdenv.lib.concatMapStringsSep "\n" (v: ''
+      ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${v}.dylib
+    '') versionSuffixes}
   '';
 
   doCheck = stdenv.isLinux && (!stdenv.isi686);
diff --git a/nixpkgs/pkgs/development/compilers/llvm/5/lld.nix b/nixpkgs/pkgs/development/compilers/llvm/5/lld.nix
index 9a47435cf140..bf23f80ef103 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/5/lld.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/5/lld.nix
@@ -27,5 +27,6 @@ stdenv.mkDerivation {
     homepage    = http://lld.llvm.org/;
     license     = stdenv.lib.licenses.ncsa;
     platforms   = stdenv.lib.platforms.all;
+    badPlatforms = [ "x86_64-darwin" ];
   };
 }
diff --git a/nixpkgs/pkgs/development/compilers/llvm/5/llvm.nix b/nixpkgs/pkgs/development/compilers/llvm/5/llvm.nix
index 41dc20ec4fe3..d6839f0f2909 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/5/llvm.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/5/llvm.nix
@@ -18,10 +18,13 @@
 let
   src = fetch "llvm" "0g1bbj2n6xv4p1n6hh17vj3vpvg56wacipc81dgwga9mg2lys8nm";
 
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with stdenv.lib;
-    concatStringsSep "." (take 2 (splitString "." release_version));
-in stdenv.mkDerivation (rec {
+  # Used when creating a versioned symlinks of libLLVM.dylib
+  versionSuffixes = with stdenv.lib;
+    let parts = splitString "." release_version; in
+    imap (i: _: concatStringsSep "." (take i parts)) parts;
+in
+
+stdenv.mkDerivation (rec {
   name = "llvm-${version}";
 
   unpackPhase = ''
@@ -119,8 +122,9 @@ in stdenv.mkDerivation (rec {
     substituteInPlace "$out/lib/cmake/llvm/LLVMExports-${if debugVersion then "debug" else "release"}.cmake" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLLVM.dylib" "$lib/lib/libLLVM.dylib" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLTO.dylib" "$lib/lib/libLTO.dylib"
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
+    ${stdenv.lib.concatMapStringsSep "\n" (v: ''
+      ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${v}.dylib
+    '') versionSuffixes}
   '';
 
   doCheck = stdenv.isLinux && (!stdenv.isi686);
diff --git a/nixpkgs/pkgs/development/compilers/llvm/6/llvm.nix b/nixpkgs/pkgs/development/compilers/llvm/6/llvm.nix
index 1d96513a0ece..9237d442b776 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/6/llvm.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/6/llvm.nix
@@ -21,11 +21,13 @@ let
 
   src = fetch "llvm" "1qpls3vk85lydi5b4axl0809fv932qgsqgdgrk098567z4jc7mmn";
 
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with stdenv.lib;
-    concatStringsSep "." (take 2 (splitString "." release_version));
+  # Used when creating a versioned symlinks of libLLVM.dylib
+  versionSuffixes = with stdenv.lib;
+    let parts = splitString "." release_version; in
+    imap (i: _: concatStringsSep "." (take i parts)) parts;
+in
 
-in stdenv.mkDerivation (rec {
+stdenv.mkDerivation (rec {
   name = "llvm-${version}";
 
   unpackPhase = ''
@@ -133,8 +135,9 @@ in stdenv.mkDerivation (rec {
   + optionalString (stdenv.isDarwin && enableSharedLibraries) ''
     substituteInPlace "$out/lib/cmake/llvm/LLVMExports-${if debugVersion then "debug" else "release"}.cmake" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLLVM.dylib" "$lib/lib/libLLVM.dylib"
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
+    ${stdenv.lib.concatMapStringsSep "\n" (v: ''
+      ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${v}.dylib
+    '') versionSuffixes}
   '';
 
   doCheck = stdenv.isLinux && (!stdenv.isi686);
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/clang/default.nix b/nixpkgs/pkgs/development/compilers/llvm/7/clang/default.nix
index e4252647ce6d..a4877b3fe6f5 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/clang/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/clang/default.nix
@@ -9,7 +9,7 @@ let
     name = "clang-${version}";
 
     unpackPhase = ''
-      unpackFile ${fetch "cfe" "067lwggnbg0w1dfrps790r5l6k8n5zwhlsw7zb6zvmfpwpfn4nx4"}
+      unpackFile ${fetch "cfe" "0vc4i87qwxnw9lci4ayws9spakg0z6w5w670snj9f8g5m9rc8zg9"}
       mv cfe-${version}* clang
       sourceRoot=$PWD/clang
       unpackFile ${clang-tools-extra_src}
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch b/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch
deleted file mode 100644
index f9323ed95c05..000000000000
--- a/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt-clock_gettime.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-commit f00c7bccf7955b7dfbb4859fd9019e9eb3349f2d
-Author: Tobias Mayer <tobim@fastmail.fm>
-Date:   Wed Feb 13 12:44:17 2019 +0100
-
-    Provide clock_gettime for xray on macos < 10.12
-
-diff --git a/lib/xray/xray_basic_logging.cc b/lib/xray/xray_basic_logging.cc
-index a46c151af..38aea6932 100644
---- a/lib/xray/xray_basic_logging.cc
-+++ b/lib/xray/xray_basic_logging.cc
-@@ -36,6 +36,29 @@
- #include "xray_tsc.h"
- #include "xray_utils.h"
- 
-+#if __MACH__
-+#include <mach/clock.h>
-+#include <mach/mach.h>
-+enum clockid_t {
-+    CLOCK_MONOTONIC = REALTIME_CLOCK,
-+    CLOCK_REALTIME = REALTIME_CLOCK
-+};
-+
-+int clock_gettime(clockid_t clock_id, struct timespec *ts) {
-+  if (ts != NULL) {
-+      clock_serv_t cclock;
-+      mach_timespec_t mts;
-+      host_get_clock_service(mach_host_self(), clock_id, &cclock);
-+      clock_get_time(cclock, &mts);
-+      mach_port_deallocate(mach_task_self(), cclock);
-+      ts->tv_sec = mts.tv_sec;
-+      ts->tv_nsec = mts.tv_nsec;
-+      return 0;
-+  }
-+  return -1;
-+}
-+#endif
-+
- namespace __xray {
- 
- SpinMutex LogMutex;
-diff --git a/lib/xray/xray_fdr_logging.cc b/lib/xray/xray_fdr_logging.cc
-index 4b308b27f..1d044c8fd 100644
---- a/lib/xray/xray_fdr_logging.cc
-+++ b/lib/xray/xray_fdr_logging.cc
-@@ -38,6 +38,29 @@
- #include "xray_tsc.h"
- #include "xray_utils.h"
- 
-+#if __MACH__
-+#include <mach/clock.h>
-+#include <mach/mach.h>
-+enum clockid_t {
-+    CLOCK_MONOTONIC = REALTIME_CLOCK,
-+    CLOCK_REALTIME = REALTIME_CLOCK
-+};
-+
-+int clock_gettime(clockid_t clock_id, struct timespec *ts) {
-+  if (ts != NULL) {
-+      clock_serv_t cclock;
-+      mach_timespec_t mts;
-+      host_get_clock_service(mach_host_self(), clock_id, &cclock);
-+      clock_get_time(cclock, &mts);
-+      mach_port_deallocate(mach_task_self(), cclock);
-+      ts->tv_sec = mts.tv_sec;
-+      ts->tv_nsec = mts.tv_nsec;
-+      return 0;
-+  }
-+  return -1;
-+}
-+#endif
-+
- namespace __xray {
- 
- atomic_sint32_t LoggingStatus = {XRayLogInitStatus::XRAY_LOG_UNINITIALIZED};
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt.nix b/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt.nix
index 7a6c91fb832b..989529ff8cc8 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/compiler-rt.nix
@@ -2,7 +2,7 @@
 stdenv.mkDerivation rec {
   name = "compiler-rt-${version}";
   inherit version;
-  src = fetch "compiler-rt" "065ybd8fsc4h2hikbdyricj6pyv4r7r7kpcikhb2y5zf370xybkq";
+  src = fetch "compiler-rt" "1n48p8gjarihkws0i2bay5w9bdwyxyxxbpwyng7ba58jb30dlyq5";
 
   nativeBuildInputs = [ cmake python llvm ];
   buildInputs = stdenv.lib.optional stdenv.hostPlatform.isDarwin libcxxabi;
@@ -26,9 +26,8 @@ stdenv.mkDerivation rec {
 
   patches = [
     ./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
-  ] ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
-    ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./crtbegin-and-end.patch
-    ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin ./compiler-rt-clock_gettime.patch;
+  ] ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./crtbegin-and-end.patch
+    ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch;
 
   # TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
   # to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/default.nix b/nixpkgs/pkgs/development/compilers/llvm/7/default.nix
index 060bef69bc15..7f99cc9ae2cd 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/default.nix
@@ -5,7 +5,7 @@
 }:
 
 let
-  release_version = "7.0.1";
+  release_version = "7.1.0";
   version = release_version; # differentiating these is important for rc's
 
   fetch = name: sha256: fetchurl {
@@ -13,7 +13,7 @@ let
     inherit sha256;
   };
 
-  clang-tools-extra_src = fetch "clang-tools-extra" "1v9vc7id1761qm7mywlknsp810232iwyz8rd4y5km4h7pg9cg4sc";
+  clang-tools-extra_src = fetch "clang-tools-extra" "0lb4kdh7j2fhfz8kd6iv5df7m3pikiryk1vvwsf87spc90n09q0w";
 
   tools = stdenv.lib.makeExtensible (tools: let
     callPackage = newScope (tools // { inherit stdenv cmake libxml2 python isl release_version version fetch; });
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/libc++/default.nix b/nixpkgs/pkgs/development/compilers/llvm/7/libc++/default.nix
index d372984dac7c..e2ec4e274f4c 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/libc++/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/libc++/default.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation rec {
   name = "libc++-${version}";
 
-  src = fetch "libcxx" "1wdrxg365ig0kngx52pd0n820sncp24blb0zpalc579iidhh4002";
+  src = fetch "libcxx" "0kmhcapm2cjwalyiqasj9dmqbw59mcwdl8fgl951wg7ax84b8hj4";
 
   postUnpack = ''
     unpackFile ${libcxxabi.src}
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/libc++abi.nix b/nixpkgs/pkgs/development/compilers/llvm/7/libc++abi.nix
index b65b75b36886..2fe6f1c58f66 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/libc++abi.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/libc++abi.nix
@@ -3,7 +3,7 @@
 stdenv.mkDerivation {
   name = "libc++abi-${version}";
 
-  src = fetch "libcxxabi" "1n6yx0949l9bprh75dffchahn8wplkm79ffk4f2ap9vw2lx90s41";
+  src = fetch "libcxxabi" "1zcqxsdjhawgz1cvpk07y3jl6fg9p3ay4nl69zsirqb2ghgyhhb2";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = stdenv.lib.optional (!stdenv.isDarwin && !stdenv.isFreeBSD) libunwind;
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/lld.nix b/nixpkgs/pkgs/development/compilers/llvm/7/lld.nix
index 33085eb3c808..63ad43e62cd7 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/lld.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/lld.nix
@@ -9,7 +9,7 @@
 stdenv.mkDerivation {
   name = "lld-${version}";
 
-  src = fetch "lld" "0ca0qygrk87lhjk6cpv1wbmdfnficqqjsda3k7b013idvnralsc8";
+  src = fetch "lld" "0rsqb7zcnij5r5ipfhr129j7skr5n9pyr388kjpqwh091952f3x1";
 
   nativeBuildInputs = [ cmake ];
   buildInputs = [ llvm libxml2 ];
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/lldb.nix b/nixpkgs/pkgs/development/compilers/llvm/7/lldb.nix
index 14cc0514fe6d..f58871f1d7cd 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/lldb.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/lldb.nix
@@ -17,7 +17,7 @@
 stdenv.mkDerivation {
   name = "lldb-${version}";
 
-  src = fetch "lldb" "10k9lyk3i72j9hca523r9pz79qp7d8q7jqnjy0i3saj1bgknpd3n";
+  src = fetch "lldb" "0klsscg1sczc4nw2l53xggi969k361cng2sjjrfp3bv4g5x14s4v";
 
   postPatch = ''
     # Fix up various paths that assume llvm and clang are installed in the same place
@@ -27,6 +27,9 @@ stdenv.mkDerivation {
       cmake/modules/LLDBStandalone.cmake
     sed -i 's,"$.LLVM_LIBRARY_DIR.",${llvm}/lib ${clang-unwrapped}/lib,' \
       cmake/modules/LLDBStandalone.cmake
+    sed -i -e 's,message(SEND_ERROR "Cannot find debugserver on system."),,' \
+           -e 's,string(STRIP ''${XCODE_DEV_DIR} XCODE_DEV_DIR),,' \
+           tools/debugserver/source/CMakeLists.txt
   '';
 
   nativeBuildInputs = [ cmake python which swig ];
@@ -36,8 +39,11 @@ stdenv.mkDerivation {
   CXXFLAGS = "-fno-rtti";
   hardeningDisable = [ "format" ];
 
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-I${libxml2.dev}/include/libxml2";
+
   cmakeFlags = [
     "-DLLDB_CODESIGN_IDENTITY=" # codesigning makes nondeterministic
+    "-DSKIP_DEBUGSERVER=ON"
   ];
 
   enableParallelBuilding = true;
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/llvm.nix b/nixpkgs/pkgs/development/compilers/llvm/7/llvm.nix
index 34f8a5478d1b..c288fd3e2a5c 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/llvm.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/llvm.nix
@@ -22,12 +22,13 @@
 let
   inherit (stdenv.lib) optional optionals optionalString;
 
-  src = fetch "llvm" "16s196wqzdw4pmri15hadzqgdi926zln3an2viwyq0kini6zr3d3";
-  polly_src = fetch "polly" "0wgvayfilgb530bq51l7szxfb13l24nnrmyji2f6ncq95a24dw8v";
+  src = fetch "llvm" "0r1p5didv4rkgxyvbkyz671xddg6i3dxvbpsi1xxipkla0l9pk0v";
+  polly_src = fetch "polly" "16qkns4ab4x0azrvhy4j7cncbyb2rrbdrqj87zphvqxm5pvm8m1h";
 
-  # Used when creating a version-suffixed symlink of libLLVM.dylib
-  shortVersion = with stdenv.lib;
-    concatStringsSep "." (take 1 (splitString "." release_version));
+  # Used when creating a versioned symlinks of libLLVM.dylib
+  versionSuffixes = with stdenv.lib;
+    let parts = splitString "." release_version; in
+    imap (i: _: concatStringsSep "." (take i parts)) parts;
 
 in stdenv.mkDerivation (rec {
   name = "llvm-${version}";
@@ -53,12 +54,6 @@ in stdenv.mkDerivation (rec {
   propagatedBuildInputs = [ ncurses zlib ];
 
   patches = [
-    # https://bugs.llvm.org/show_bug.cgi?id=39427
-    # https://github.com/NixOS/nixpkgs/issues/54370
-    (fetchpatch {
-      url = "https://github.com/llvm-mirror/llvm/commit/57567def148f387153a8149fb590bd39b1b006a1.patch";
-      sha256 = "1w1xg5pxpc6cals1nf5j5k4p6qi8lcrpvn0paxc86m415i79xmcg";
-    })
     # backport, fix building rust crates with lto
     (fetchpatch {
       url = "https://github.com/llvm-mirror/llvm/commit/da1fb72bb305d6bc1f3899d541414146934bf80f.patch";
@@ -148,8 +143,9 @@ in stdenv.mkDerivation (rec {
   + optionalString (stdenv.isDarwin && enableSharedLibraries) ''
     substituteInPlace "$out/lib/cmake/llvm/LLVMExports-${if debugVersion then "debug" else "release"}.cmake" \
       --replace "\''${_IMPORT_PREFIX}/lib/libLLVM.dylib" "$lib/lib/libLLVM.dylib"
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${shortVersion}.dylib
-    ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${release_version}.dylib
+    ${stdenv.lib.concatMapStringsSep "\n" (v: ''
+      ln -s $lib/lib/libLLVM.dylib $lib/lib/libLLVM-${v}.dylib
+    '') versionSuffixes}
   '';
 
   doCheck = stdenv.isLinux && (!stdenv.isx86_32);
diff --git a/nixpkgs/pkgs/development/compilers/llvm/7/openmp.nix b/nixpkgs/pkgs/development/compilers/llvm/7/openmp.nix
index fb856eaa51fd..e55f4aa5ba13 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/7/openmp.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/7/openmp.nix
@@ -9,7 +9,7 @@
 stdenv.mkDerivation {
   name = "openmp-${version}";
 
-  src = fetch "openmp" "030dkg5cypd7j9hq0mcqb5gs31lxwmzfq52j81l7v9ldcy5bf5mz";
+  src = fetch "openmp" "1dg53wzsci2kra8lh1y0chh60h2l8h1by93br5spzvzlxshkmrqy";
 
   nativeBuildInputs = [ cmake perl ];
   buildInputs = [ llvm ];
diff --git a/nixpkgs/pkgs/development/compilers/llvm/8/clang/default.nix b/nixpkgs/pkgs/development/compilers/llvm/8/clang/default.nix
index 8709e47dd3aa..c0a0e0851450 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/8/clang/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/8/clang/default.nix
@@ -42,7 +42,7 @@ let
       # Backport for -static-pie, which the latter touches, and which is nice in
       # its own right.
       ./static-pie.patch
-      # Backport for the `--unwindlib=[libgcc|complier-rt]` flag, which is
+      # Backport for the `--unwindlib=[libgcc|compiler-rt]` flag, which is
       # needed for our bootstrapping to not interfere with C.
       ./unwindlib.patch
     ];
diff --git a/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt-clock_gettime.patch b/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt-clock_gettime.patch
deleted file mode 100644
index f9323ed95c05..000000000000
--- a/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt-clock_gettime.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-commit f00c7bccf7955b7dfbb4859fd9019e9eb3349f2d
-Author: Tobias Mayer <tobim@fastmail.fm>
-Date:   Wed Feb 13 12:44:17 2019 +0100
-
-    Provide clock_gettime for xray on macos < 10.12
-
-diff --git a/lib/xray/xray_basic_logging.cc b/lib/xray/xray_basic_logging.cc
-index a46c151af..38aea6932 100644
---- a/lib/xray/xray_basic_logging.cc
-+++ b/lib/xray/xray_basic_logging.cc
-@@ -36,6 +36,29 @@
- #include "xray_tsc.h"
- #include "xray_utils.h"
- 
-+#if __MACH__
-+#include <mach/clock.h>
-+#include <mach/mach.h>
-+enum clockid_t {
-+    CLOCK_MONOTONIC = REALTIME_CLOCK,
-+    CLOCK_REALTIME = REALTIME_CLOCK
-+};
-+
-+int clock_gettime(clockid_t clock_id, struct timespec *ts) {
-+  if (ts != NULL) {
-+      clock_serv_t cclock;
-+      mach_timespec_t mts;
-+      host_get_clock_service(mach_host_self(), clock_id, &cclock);
-+      clock_get_time(cclock, &mts);
-+      mach_port_deallocate(mach_task_self(), cclock);
-+      ts->tv_sec = mts.tv_sec;
-+      ts->tv_nsec = mts.tv_nsec;
-+      return 0;
-+  }
-+  return -1;
-+}
-+#endif
-+
- namespace __xray {
- 
- SpinMutex LogMutex;
-diff --git a/lib/xray/xray_fdr_logging.cc b/lib/xray/xray_fdr_logging.cc
-index 4b308b27f..1d044c8fd 100644
---- a/lib/xray/xray_fdr_logging.cc
-+++ b/lib/xray/xray_fdr_logging.cc
-@@ -38,6 +38,29 @@
- #include "xray_tsc.h"
- #include "xray_utils.h"
- 
-+#if __MACH__
-+#include <mach/clock.h>
-+#include <mach/mach.h>
-+enum clockid_t {
-+    CLOCK_MONOTONIC = REALTIME_CLOCK,
-+    CLOCK_REALTIME = REALTIME_CLOCK
-+};
-+
-+int clock_gettime(clockid_t clock_id, struct timespec *ts) {
-+  if (ts != NULL) {
-+      clock_serv_t cclock;
-+      mach_timespec_t mts;
-+      host_get_clock_service(mach_host_self(), clock_id, &cclock);
-+      clock_get_time(cclock, &mts);
-+      mach_port_deallocate(mach_task_self(), cclock);
-+      ts->tv_sec = mts.tv_sec;
-+      ts->tv_nsec = mts.tv_nsec;
-+      return 0;
-+  }
-+  return -1;
-+}
-+#endif
-+
- namespace __xray {
- 
- atomic_sint32_t LoggingStatus = {XRayLogInitStatus::XRAY_LOG_UNINITIALIZED};
diff --git a/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt.nix b/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt.nix
index 2b591cc94aff..a8bbb1f719bf 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/8/compiler-rt.nix
@@ -34,8 +34,7 @@ stdenv.mkDerivation rec {
   patches = [
     ./compiler-rt-codesign.patch # Revert compiler-rt commit that makes codesign mandatory
   ]# ++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./sanitizers-nongnu.patch
-    ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./crtbegin-and-end.patch
-    ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin ./compiler-rt-clock_gettime.patch;
+    ++ stdenv.lib.optional (stdenv.hostPlatform != stdenv.buildPlatform) ./crtbegin-and-end.patch;
 
   # TSAN requires XPC on Darwin, which we have no public/free source files for. We can depend on the Apple frameworks
   # to get it, but they're unfree. Since LLVM is rather central to the stdenv, we patch out TSAN support so that Hydra