NixOS · emilazy · Aug 18, 2025 · Aug 9, 2025 · Aug 9, 2025 · Aug 9, 2025
diff --git a/nixos/modules/config/malloc.nix b/nixos/modules/config/malloc.nix
@@ -52,7 +52,7 @@ let
             or (throw "scudo not supported on ${pkgs.stdenv.hostPlatform.system}");
       in
       {
-        libPath = "${pkgs.llvmPackages_14.compiler-rt}/lib/linux/libclang_rt.scudo-${systemPlatform}.so";
+        libPath = "${pkgs.llvmPackages.compiler-rt}/lib/linux/libclang_rt.scudo-${systemPlatform}.so";
         description = ''
           A user-mode allocator based on LLVM Sanitizer’s CombinedAllocator,
           which aims at providing additional mitigations against heap based

diff --git a/pkgs/applications/science/math/mathematica/generic.nix b/pkgs/applications/science/math/mathematica/generic.nix
@@ -32,7 +32,7 @@
   libuuid,
   libxkbcommon,
   libxml2,
-  llvmPackages_13,
+  llvmPackages,
   matio,
   mpfr,
   ncurses,
@@ -102,7 +102,7 @@ stdenv.mkDerivation {
     libuuid
     libxkbcommon
     libxml2
-    llvmPackages_13.libllvm.lib
+    llvmPackages.libllvm.lib
     matio
     mpfr
     ncurses

diff --git a/pkgs/by-name/bl/bloaty/package.nix b/pkgs/by-name/bl/bloaty/package.nix
@@ -11,7 +11,7 @@
   gtest,
   pkg-config,
   lit,
-  llvmPackages_16,
+  llvmPackages,
 }:
 let
   # Old vendored package which has no other use than here, so not packaged in nixpkgs.
@@ -35,8 +35,8 @@ stdenv.mkDerivation {
 
   cmakeFlags = [
     "-DLIT_EXECUTABLE=${lit}/bin/lit"
-    "-DFILECHECK_EXECUTABLE=${llvmPackages_16.libllvm}/bin/FileCheck"
-    "-DYAML2OBJ_EXECUTABLE=${llvmPackages_16.libllvm}/bin/yaml2obj"
+    "-DFILECHECK_EXECUTABLE=${llvmPackages.libllvm}/bin/FileCheck"
+    "-DYAML2OBJ_EXECUTABLE=${llvmPackages.libllvm}/bin/yaml2obj"
   ];
 
   postPatch = ''
@@ -66,7 +66,7 @@ stdenv.mkDerivation {
     capstone
     gtest
     lit
-    llvmPackages_16.libllvm
+    llvmPackages.libllvm
   ];
 
   doCheck = true;

diff --git a/pkgs/by-name/c2/c2ffi/package.nix b/pkgs/by-name/c2/c2ffi/package.nix
@@ -2,24 +2,24 @@
   lib,
   fetchFromGitHub,
   cmake,
-  llvmPackages_16,
+  llvmPackages_18,
   unstableGitUpdater,
 }:
 
 let
-  c2ffiBranch = "llvm-16.0.0";
-  llvmPackages = llvmPackages_16;
+  c2ffiBranch = "llvm-18.1.0";
+  llvmPackages = llvmPackages_18;
 in
 
 llvmPackages.stdenv.mkDerivation {
   pname = "c2ffi-${c2ffiBranch}";
-  version = "0-unstable-2023-11-18";
+  version = "0-unstable-2024-04-20";
 
   src = fetchFromGitHub {
     owner = "rpav";
     repo = "c2ffi";
-    rev = "097cbe61ca02dc79ea60859aa056975131a9d985";
-    hash = "sha256-pflolW5OoEkVDozy4cjCdUIVxgE/SfVKIhQyNBDhENc=";
+    rev = "0de81efb64acc82c08c5eee4a7108ddcb1b00d86";
+    hash = "sha256-q81Vxq/6h/5jgQ1Leq15klN/8L+UiavlxkARGo2SrJ0=";
   };
 
   passthru.updateScript = unstableGitUpdater {

diff --git a/pkgs/by-name/ch/chez/package.nix b/pkgs/by-name/ch/chez/package.nix
@@ -1,7 +1,6 @@
 {
   lib,
   stdenv,
-  llvmPackages_17,
   fetchurl,
   coreutils,
   cctools,
@@ -13,13 +12,6 @@
   testers,
 }@args:
 
-let
-  # x64 darwin fails with invalid memory reference with clang-18 & 19.
-  # https://github.com/cisco/ChezScheme/issues/896
-  # aarch64 darwin fails to execute `system` calls with clang-18 & 19.
-  # https://github.com/cisco/ChezScheme/issues/928
-  stdenv = if args.stdenv.hostPlatform.isDarwin then llvmPackages_17.stdenv else args.stdenv;
-in
 stdenv.mkDerivation (finalAttrs: {
   pname = "chez-scheme";
   version = "10.2.0";

diff --git a/pkgs/by-name/co/contour/package.nix b/pkgs/by-name/co/contour/package.nix
@@ -20,8 +20,7 @@
   yaml-cpp,
   ncurses,
   file,
-  libutil,
-  sigtool,
+  darwin,
   nixosTests,
   installShellFiles,
   reflection-cpp,
@@ -53,7 +52,7 @@ stdenv.mkDerivation (finalAttrs: {
     qt6.wrapQtAppsHook
     installShellFiles
   ]
-  ++ lib.optionals stdenv.hostPlatform.isDarwin [ sigtool ];
+  ++ lib.optionals stdenv.hostPlatform.isDarwin [ darwin.sigtool ];
 
   buildInputs = [
     boxed-cpp
@@ -74,7 +73,7 @@ stdenv.mkDerivation (finalAttrs: {
   ]
   ++ lib.optionals stdenv.hostPlatform.isLinux [ libutempter ]
   ++ lib.optionals stdenv.hostPlatform.isDarwin [
-    libutil
+    darwin.libutil
   ];
 
   cmakeFlags = [ "-DCONTOUR_QT_VERSION=6" ];

diff --git a/pkgs/by-name/in/inko/package.nix b/pkgs/by-name/in/inko/package.nix
@@ -2,7 +2,7 @@
   lib,
   rustPlatform,
   fetchFromGitHub,
-  llvm_17,
+  llvm,
   libffi,
   libz,
   libxml2,
@@ -35,7 +35,7 @@ rustPlatform.buildRustPackage (finalAttrs: {
   ];
 
   nativeBuildInputs = [
-    llvm_17
+    llvm
     makeWrapper
   ];
 
@@ -62,6 +62,8 @@ rustPlatform.buildRustPackage (finalAttrs: {
     };
   };
 
+  __darwinAllowLocalNetworking = true;
+
   meta = {
     description = "Language for building concurrent software with confidence";
     homepage = "https://inko-lang.org/";

diff --git a/pkgs/by-name/iv/ivm/package.nix b/pkgs/by-name/iv/ivm/package.nix
@@ -4,7 +4,7 @@
   fetchFromGitHub,
   makeWrapper,
   cargo,
-  llvm_16,
+  llvm,
   stdenv,
   libffi,
   libz,
@@ -39,7 +39,7 @@ rustPlatform.buildRustPackage (finalAttr: {
       --prefix PATH : ${
         lib.makeBinPath [
           cargo
-          llvm_16.dev
+          llvm.dev
           stdenv.cc
         ]
       } \

diff --git a/pkgs/by-name/te/terra/package.nix b/pkgs/by-name/te/terra/package.nix
@@ -2,7 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
-  llvmPackages_16,
+  llvmPackages_18,
   ncurses,
   cmake,
   libxml2,
@@ -14,17 +14,17 @@
 }:
 
 let
-  luajitRev = "50936d784474747b4569d988767f1b5bab8bb6d0";
+  luajitRev = "83954100dba9fc0cf5eeaf122f007df35ec9a604";
   luajitBase = "LuaJIT-${luajitRev}";
   luajitArchive = "${luajitBase}.tar.gz";
   luajitSrc = fetchFromGitHub {
     owner = "LuaJIT";
     repo = "LuaJIT";
     rev = luajitRev;
-    sha256 = "1g87pl014b5v6z2nnhiwn3wf405skawszfr5wdzyfbx00j3kgxd0";
+    hash = "sha256-L9T6lc32dDLAp9hPI5mKOzT0c4juW9JHA3FJCpm7HNQ=";
   };
 
-  llvmPackages = llvmPackages_16;
+  llvmPackages = llvmPackages_18;
   llvmMerged = symlinkJoin {
     name = "llvmClangMerged";
     paths = with llvmPackages; [
@@ -37,20 +37,20 @@ let
     ];
   };
 
-  cuda = cudaPackages.cudatoolkit_11;
+  cuda = cudaPackages.cudatoolkit;
 
   clangVersion = llvmPackages.clang-unwrapped.version;
 
 in
 stdenv.mkDerivation rec {
   pname = "terra";
-  version = "1.1.0";
+  version = "1.2.0";
 
   src = fetchFromGitHub {
     owner = "terralang";
     repo = "terra";
     rev = "release-${version}";
-    sha256 = "0v9vpxcp9ybwnfljskqn41vjq7c0srdfv7qs890a6480pnk4kavd";
+    hash = "sha256-CukNCvTHZUhjdHyvDUSH0YCVNkThUFPaeyLepyEKodA=";
   };
 
   nativeBuildInputs = [ cmake ];
@@ -65,9 +65,7 @@ stdenv.mkDerivation rec {
 
   cmakeFlags =
     let
-      resourceDir =
-        "${llvmMerged}/lib/clang/"
-        + (if lib.versionOlder clangVersion "16" then clangVersion else lib.versions.major clangVersion);
+      resourceDir = "${llvmMerged}/lib/clang/${lib.versions.major clangVersion}";
     in
     [
       "-DHAS_TERRA_VERSION=0"

diff --git a/pkgs/by-name/te/tetragon/package.nix b/pkgs/by-name/te/tetragon/package.nix
@@ -4,8 +4,8 @@
   fetchFromGitHub,
   pkg-config,
   go,
-  llvm_16,
-  clang_16,
+  llvm,
+  clang,
   bash,
   writableTmpDirAsHomeHook,
   gitMinimal,
@@ -28,9 +28,9 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   buildInputs = [
-    clang_16
+    clang
     go
-    llvm_16
+    llvm
     pkg-config
   ];
 

diff --git a/pkgs/by-name/tr/tracee/package.nix b/pkgs/by-name/tr/tracee/package.nix
@@ -3,7 +3,7 @@
   buildGoModule,
   fetchFromGitHub,
 
-  clang_14,
+  clang,
   pkg-config,
 
   elfutils,
@@ -37,10 +37,13 @@ buildGoModule rec {
 
   enableParallelBuilding = true;
   # needed to build bpf libs
-  hardeningDisable = [ "stackprotector" ];
+  hardeningDisable = [
+    "stackprotector"
+    "zerocallusedregs"
+  ];
 
   nativeBuildInputs = [
-    clang_14
+    clang
     pkg-config
   ];
   buildInputs = [

diff --git a/pkgs/development/compilers/flutter/engine/package.nix b/pkgs/development/compilers/flutter/engine/package.nix
@@ -18,7 +18,6 @@
   fetchgit,
   runCommand,
   llvmPackages,
-  llvmPackages_15,
   patchelf,
   openbox,
   xorg,
@@ -217,7 +216,7 @@ stdenv.mkDerivation (finalAttrs: {
     cp -pr --reflink=auto $swiftshader src/flutter/third_party/swiftshader
     chmod -R u+w -- src/flutter/third_party/swiftshader
 
-    ln -s ${llvmPackages_15.llvm.monorepoSrc} src/flutter/third_party/swiftshader/third_party/llvm-project
+    ln -s ${llvmPackages.llvm.monorepoSrc} src/flutter/third_party/swiftshader/third_party/llvm-project
 
     mkdir -p src/flutter/buildtools/${constants.alt-platform}
     ln -s ${llvm} src/flutter/buildtools/${constants.alt-platform}/clang

diff --git a/pkgs/development/haskell-modules/configuration-nix.nix b/pkgs/development/haskell-modules/configuration-nix.nix
@@ -184,7 +184,7 @@ builtins.intersectAttrs super {
 
   # Doesn't declare LLVM dependency, needs llvm-config
   llvm-codegen = addBuildTools [
-    pkgs.llvmPackages_17.llvm.dev # for native llvm-config
+    pkgs.llvmPackages.llvm.dev # for native llvm-config
   ] super.llvm-codegen;
 
   # hledger* overrides

diff --git a/pkgs/development/libraries/qt-5/5.15/default.nix b/pkgs/development/libraries/qt-5/5.15/default.nix
@@ -26,8 +26,7 @@
   gst-plugins-base,
   gtk3,
   dconf,
-  llvmPackages_15,
-  overrideLibcxx,
+  llvmPackages_19,
   darwin,
 
   # options
@@ -328,16 +327,9 @@ let
       qtwayland = callPackage ../modules/qtwayland.nix { };
       qtwebchannel = callPackage ../modules/qtwebchannel.nix { };
       qtwebengine = callPackage ../modules/qtwebengine.nix {
-        # The version of Chromium used by Qt WebEngine 5.15.x does not build with clang 16 due
-        # to the following errors:
-        # * -Wenum-constexpr-conversion: This is a downgradable error in clang 16, but it is planned
-        #   to be made into a hard error in a future version of clang. Patches are not available for
-        #   the version of v8 used by Chromium in Qt WebEngine, and fixing the code is non-trivial.
-        # * -Wincompatible-function-pointer-types: This is also a downgradable error generated
-        #   starting with clang 16. Patches are available upstream that can be backported.
-        # Because the first error is non-trivial to fix and suppressing it risks future breakage,
-        # clang is pinned to clang 15. That also makes fixing the second set of errors unnecessary.
-        stdenv = if stdenv.cc.isClang then overrideLibcxx llvmPackages_15.stdenv else stdenv;
+        # Won’t build with Clang 20, as `-Wenum-constexpr-conversion`
+        # was made a hard error.
+        stdenv = if stdenv.cc.isClang then llvmPackages_19.stdenv else stdenv;
         inherit (srcs.qtwebengine) version;
         inherit (darwin) bootstrap_cmds;
         python = python3;

diff --git a/pkgs/development/libraries/qt-5/modules/qtwebengine-gperf-3.2.patch b/pkgs/development/libraries/qt-5/modules/qtwebengine-gperf-3.2.patch
@@ -0,0 +1,25 @@
+Backported from: <https://github.com/chromium/chromium/commit/f8f21fb4aa01f75acbb12abf5ea8c263c6817141.patch>
+Original author: Daniel Richard G <iskunk@gmail.com>
+
+diff --git a/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/gperf.py b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/gperf.py
+index 5ee4905..6c500a0 100644
+--- a/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/gperf.py
++++ b/src/3rdparty/chromium/third_party/blink/renderer/build/scripts/gperf.py
+@@ -36,10 +36,13 @@ def generate_gperf(gperf_path, gperf_input, gperf_args):
+         # https://savannah.gnu.org/bugs/index.php?53028
+         gperf_output = re.sub(r'\bregister ', '', gperf_output)
+         # -Wimplicit-fallthrough needs an explicit fallthrough statement,
+-        # so replace gperf's /*FALLTHROUGH*/ comment with the statement.
+-        # https://savannah.gnu.org/bugs/index.php?53029
+-        gperf_output = gperf_output.replace('/*FALLTHROUGH*/',
+-                                            '  FALLTHROUGH;')
++        # so replace gperf 3.1's /*FALLTHROUGH*/ comment with the statement.
++        # https://savannah.gnu.org/bugs/index.php?53029 (fixed in 3.2)
++        if re.search(
++                r'/\* C\+\+ code produced by gperf version 3\.[01](\.\d+)? \*/',
++                gperf_output):
++            gperf_output = gperf_output.replace('/*FALLTHROUGH*/',
++                                                '  [[fallthrough]];')
+         # -Wpointer-to-int-cast warns about casting pointers to smaller ints
+         # Replace {(int)(long)&(foo), bar} with
+         # {static_cast<int>(reinterpret_cast<uintptr_t>(&(foo)), bar}
diff --git a/pkgs/development/libraries/qt-5/modules/qtwebengine.nix b/pkgs/development/libraries/qt-5/modules/qtwebengine.nix
@@ -219,6 +219,9 @@ qtModule (
         hash = "sha256-DcAYOV9b30ogPCiedvQimEmiZpUJquk5j6WLjJxR54U=";
         extraPrefix = "";
       })
+
+      # Fix the build with gperf ≥ 3.2 and Clang 19.
+      ./qtwebengine-gperf-3.2.patch
     ];
 
     postPatch = ''