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-rw-r--r--pkgs/applications/networking/browsers/chromium/browser.nix2
-rw-r--r--pkgs/applications/networking/browsers/chromium/common.nix61
-rw-r--r--pkgs/applications/networking/browsers/chromium/default.nix13
-rw-r--r--pkgs/applications/networking/browsers/chromium/patches/chromium-126-llvm-17.patch29
-rw-r--r--pkgs/applications/networking/browsers/chromium/patches/chromium-126-rust.patch21
-rw-r--r--pkgs/applications/networking/browsers/chromium/recompress-tarball.nix1
-rw-r--r--pkgs/applications/networking/browsers/chromium/upstream-info.nix32
7 files changed, 102 insertions, 57 deletions
diff --git a/pkgs/applications/networking/browsers/chromium/browser.nix b/pkgs/applications/networking/browsers/chromium/browser.nix
index 24811cc336b6a..5b77afaaf3ebb 100644
--- a/pkgs/applications/networking/browsers/chromium/browser.nix
+++ b/pkgs/applications/networking/browsers/chromium/browser.nix
@@ -73,7 +73,7 @@ mkChromiumDerivation (base: rec {
   requiredSystemFeatures = [ "big-parallel" ];
 
   meta = {
-    description = "An open source web browser from Google"
+    description = "Open source web browser from Google"
       + lib.optionalString ungoogled ", with dependencies on Google web services removed";
     longDescription = ''
       Chromium is an open source web browser from Google that aims to build a
diff --git a/pkgs/applications/networking/browsers/chromium/common.nix b/pkgs/applications/networking/browsers/chromium/common.nix
index e7597249acdb5..3616189374d30 100644
--- a/pkgs/applications/networking/browsers/chromium/common.nix
+++ b/pkgs/applications/networking/browsers/chromium/common.nix
@@ -3,7 +3,6 @@
 , buildPackages
 , buildPlatform
 , pkgsBuildBuild
-, pkgsBuildTarget
 # Channel data:
 , channel, upstream-info
 # Helper functions:
@@ -13,7 +12,6 @@
 , ninja, pkg-config
 , python3, perl
 , which
-, llvmPackages_attrName
 , libuuid
 , overrideCC
 # postPatch:
@@ -132,7 +130,7 @@ let
   # https://github.com/NixOS/nixpkgs/issues/142901
   buildPlatformLlvmStdenv =
     let
-      llvmPackages = pkgsBuildBuild.${llvmPackages_attrName};
+      llvmPackages = pkgsBuildBuild.rustc.llvmPackages;
     in
       overrideCC llvmPackages.stdenv
         (llvmPackages.stdenv.cc.override {
@@ -165,7 +163,7 @@ let
       ninja pkg-config
       python3WithPackages perl
       which
-      buildPackages.${llvmPackages_attrName}.bintools
+      buildPackages.rustc.llvmPackages.bintools
       bison gperf
     ];
 
@@ -261,6 +259,14 @@ let
       # We also need enable_widevine_cdm_component to be false. Unfortunately it isn't exposed as gn
       # flag (declare_args) so we simply hardcode it to false.
       ./patches/widevine-disable-auto-download-allow-bundle.patch
+    ] ++ lib.optionals (versionRange "125" "126") [
+      # Fix building M125 with ninja 1.12. Not needed for M126+.
+      # https://issues.chromium.org/issues/336911498
+      # https://chromium-review.googlesource.com/c/chromium/src/+/5487538
+      (githubPatch {
+        commit = "a976cb05b4024b7a6452d1541378d718cdfe33e6";
+        hash = "sha256-K2PSeJAvhGH2/Yp63/4mJ85NyqXqDDkMWY+ptrpgmOI=";
+      })
     ] ++ [
       # Required to fix the build with a more recent wayland-protocols version
       # (we currently package 1.26 in Nixpkgs while Chromium bundles 1.21):
@@ -269,28 +275,23 @@ let
       # Chromium reads initial_preferences from its own executable directory
       # This patch modifies it to read /etc/chromium/initial_preferences
       ./patches/chromium-initial-prefs.patch
-    ] ++ lib.optionals (chromiumVersionAtLeast "120") [
-      # We need to revert this patch to build M120+ with LLVM 17:
+    ] ++ lib.optionals (versionRange "120" "126") [
+      # Partial revert to build M120+ with LLVM 17:
+      # https://github.com/chromium/chromium/commit/02b6456643700771597c00741937e22068b0f956
+      # https://github.com/chromium/chromium/commit/69736ffe943ff996d4a88d15eb30103a8c854e29
       ./patches/chromium-120-llvm-17.patch
-    ] ++ lib.optionals (!chromiumVersionAtLeast "119.0.6024.0") [
-      # Fix build with at-spi2-core ≥ 2.49
-      # This version is still needed for electron.
-      (githubPatch {
-        commit = "fc09363b2278893790d131c72a4ed96ec9837624";
-        hash = "sha256-l60Npgs/+0ozzuKWjwiHUUV6z59ObUjAPTfXN7eXpzw=";
-      })
-    ] ++ lib.optionals (!chromiumVersionAtLeast "121.0.6104.0") [
-      # Fix build with at-spi2-core ≥ 2.49
-      # https://chromium-review.googlesource.com/c/chromium/src/+/5001687
-      (githubPatch {
-        commit = "b9bef8e9555645fc91fab705bec697214a39dbc1";
-        hash = "sha256-CJ1v/qc8+nwaHQR9xsx08EEcuVRbyBfCZCm/G7hRY+4=";
-      })
-    ] ++ lib.optionals (chromiumVersionAtLeast "121") [
+    ] ++ lib.optionals (chromiumVersionAtLeast "126") [
+      # Rebased variant of patch right above to build M126+ with LLVM 17.
+      # staging-next will bump LLVM to 18, so we will be able to drop this soon.
+      ./patches/chromium-126-llvm-17.patch
+    ] ++ lib.optionals (versionRange "121" "126") [
       # M121 is the first version to require the new rust toolchain.
       # Partial revert of https://github.com/chromium/chromium/commit/3687976b0c6d36cf4157419a24a39f6770098d61
       # allowing us to use our rustc and our clang.
       ./patches/chromium-121-rust.patch
+    ] ++ lib.optionals (chromiumVersionAtLeast "126") [
+      # Rebased variant of patch right above to build M126+ with our rust and our clang.
+      ./patches/chromium-126-rust.patch
     ];
 
     postPatch = ''
@@ -382,8 +383,8 @@ let
     llvmCcAndBintools = symlinkJoin {
       name = "llvmCcAndBintools";
       paths = [
-        pkgsBuildTarget.${llvmPackages_attrName}.llvm
-        pkgsBuildTarget.${llvmPackages_attrName}.stdenv.cc
+        buildPackages.rustc.llvmPackages.llvm
+        buildPackages.rustc.llvmPackages.stdenv.cc
       ];
     };
 
@@ -461,10 +462,6 @@ let
       use_system_libffi = true;
       # Use nixpkgs Rust compiler instead of the one shipped by Chromium.
       rust_sysroot_absolute = "${buildPackages.rustc}";
-      # Rust is enabled for M121+, see next section:
-      enable_rust = false;
-    } // lib.optionalAttrs (chromiumVersionAtLeast "121") {
-      # M121 the first version to actually require a functioning rust toolchain
       enable_rust = true;
       # While we technically don't need the cache-invalidation rustc_version provides, rustc_version
       # is still used in some scripts (e.g. build/rust/std/find_std_rlibs.py).
@@ -483,10 +480,12 @@ let
     } // lib.optionalAttrs ungoogled (lib.importTOML ./ungoogled-flags.toml)
     // (extraAttrs.gnFlags or {}));
 
-    # We cannot use chromiumVersionAtLeast in mkDerivation's env attrset due
-    # to infinite recursion when chromium.override is used (e.g. electron).
-    # To work aroud this, we use export in the preConfigure phase.
-    preConfigure = lib.optionalString (chromiumVersionAtLeast "121") ''
+    # TODO: Migrate this to env.RUSTC_BOOTSTRAP next mass-rebuild.
+    # Chromium expects nightly/bleeding edge rustc features to be available.
+    # Our rustc in nixpkgs follows stable, but since bootstrapping rustc requires
+    # nightly features too, we can (ab-)use RUSTC_BOOTSTRAP here as well to
+    # enable those features in our stable builds.
+    preConfigure = ''
       export RUSTC_BOOTSTRAP=1
     '';
 
diff --git a/pkgs/applications/networking/browsers/chromium/default.nix b/pkgs/applications/networking/browsers/chromium/default.nix
index afd25b972d785..095fe13f9197a 100644
--- a/pkgs/applications/networking/browsers/chromium/default.nix
+++ b/pkgs/applications/networking/browsers/chromium/default.nix
@@ -1,9 +1,9 @@
-{ newScope, config, stdenv, fetchurl, makeWrapper
+{ newScope, config, stdenv, makeWrapper
 , buildPackages
 , ed, gnugrep, coreutils, xdg-utils
 , glib, gtk3, gtk4, gnome, gsettings-desktop-schemas, gn, fetchgit
 , libva, pipewire, wayland
-, gcc, nspr, nss, runCommand
+, runCommand
 , lib, libkrb5
 , widevine-cdm
 , electron-source # for warnObsoleteVersionConditional
@@ -18,17 +18,12 @@
 , cupsSupport ? true
 , pulseSupport ? config.pulseaudio or stdenv.isLinux
 , commandLineArgs ? ""
-, pkgsBuildTarget
 , pkgsBuildBuild
 , pkgs
 }:
 
 let
-  # Sometimes we access `llvmPackages` via `pkgs`, and other times
-  # via `pkgsFooBar`, so a string (attrname) is the only way to have
-  # a single point of control over the LLVM version used.
-  llvmPackages_attrName = "llvmPackages_17";
-  stdenv = pkgs.${llvmPackages_attrName}.stdenv;
+  stdenv = pkgs.rustc.llvmPackages.stdenv;
 
   # Helper functions for changes that depend on specific versions:
   warnObsoleteVersionConditional = min-version: result:
@@ -48,7 +43,7 @@ let
   callPackage = newScope chromium;
 
   chromium = rec {
-    inherit stdenv llvmPackages_attrName upstream-info;
+    inherit stdenv upstream-info;
 
     mkChromiumDerivation = callPackage ./common.nix ({
       inherit channel chromiumVersionAtLeast versionRange;
diff --git a/pkgs/applications/networking/browsers/chromium/patches/chromium-126-llvm-17.patch b/pkgs/applications/networking/browsers/chromium/patches/chromium-126-llvm-17.patch
new file mode 100644
index 0000000000000..ea059d884b5a2
--- /dev/null
+++ b/pkgs/applications/networking/browsers/chromium/patches/chromium-126-llvm-17.patch
@@ -0,0 +1,29 @@
+diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
+index 6efe967eb0a1c..590a2c274ac13 100644
+--- a/build/config/compiler/BUILD.gn
++++ b/build/config/compiler/BUILD.gn
+@@ -568,24 +568,6 @@ config("compiler") {
+       }
+     }
+ 
+-    # TODO(crbug.com/40283598): This causes binary size growth and potentially
+-    # other problems.
+-    # TODO(crbug.com/40284925): This isn't supported by Cronet's mainline llvm version.
+-    if (default_toolchain != "//build/toolchain/cros:target" &&
+-        !llvm_android_mainline) {
+-      cflags += [
+-        "-mllvm",
+-        "-split-threshold-for-reg-with-hint=0",
+-      ]
+-      if (use_thin_lto && is_a_target_toolchain) {
+-        if (is_win) {
+-          ldflags += [ "-mllvm:-split-threshold-for-reg-with-hint=0" ]
+-        } else {
+-          ldflags += [ "-Wl,-mllvm,-split-threshold-for-reg-with-hint=0" ]
+-        }
+-      }
+-    }
+-
+     # TODO(crbug.com/40192287): Investigate why/if this should be needed.
+     if (is_win) {
+       cflags += [ "/clang:-ffp-contract=off" ]
diff --git a/pkgs/applications/networking/browsers/chromium/patches/chromium-126-rust.patch b/pkgs/applications/networking/browsers/chromium/patches/chromium-126-rust.patch
new file mode 100644
index 0000000000000..776655babdd2a
--- /dev/null
+++ b/pkgs/applications/networking/browsers/chromium/patches/chromium-126-rust.patch
@@ -0,0 +1,21 @@
+diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
+index 6efe967eb0a1c..2ddae4efacbfa 100644
+--- a/build/config/compiler/BUILD.gn
++++ b/build/config/compiler/BUILD.gn
+@@ -1653,16 +1653,6 @@ config("runtime_library") {
+     configs += [ "//build/config/c++:runtime_library" ]
+   }
+ 
+-  # Rust and C++ both provide intrinsics for LLVM to call for math operations. We
+-  # want to use the C++ intrinsics, not the ones in the Rust compiler_builtins
+-  # library. The Rust symbols are marked as weak, so that they can be replaced by
+-  # the C++ symbols. This config ensures the C++ symbols exist and are strong in
+-  # order to cause that replacement to occur by explicitly linking in clang's
+-  # compiler-rt library.
+-  if (is_clang && toolchain_has_rust) {
+-    configs += [ "//build/config/clang:compiler_builtins" ]
+-  }
+-
+   # TODO(crbug.com/40570904): Come up with a better name for is POSIX + Fuchsia
+   # configuration.
+   if (is_posix || is_fuchsia) {
diff --git a/pkgs/applications/networking/browsers/chromium/recompress-tarball.nix b/pkgs/applications/networking/browsers/chromium/recompress-tarball.nix
index 0e77dd230f657..e663c393d8dc4 100644
--- a/pkgs/applications/networking/browsers/chromium/recompress-tarball.nix
+++ b/pkgs/applications/networking/browsers/chromium/recompress-tarball.nix
@@ -34,6 +34,7 @@ fetchurl ({
       --one-top-level=source \
       --exclude=third_party/llvm \
       --exclude=third_party/rust-src \
+      --exclude='build/linux/debian_*-sysroot' \
       --strip-components=1
 
     tar \
diff --git a/pkgs/applications/networking/browsers/chromium/upstream-info.nix b/pkgs/applications/networking/browsers/chromium/upstream-info.nix
index facc0227abd0c..7a6ad1abca4d4 100644
--- a/pkgs/applications/networking/browsers/chromium/upstream-info.nix
+++ b/pkgs/applications/networking/browsers/chromium/upstream-info.nix
@@ -1,37 +1,37 @@
 {
   stable = {
     chromedriver = {
-      hash_darwin = "sha256-1gi+hWrVL+mBB8pHMXnX/8kzRCQqGuut/+wO/9yBABs=";
+      hash_darwin = "sha256-154JPXP5qCM94zQRkRSvPKk6RGIhani7FUwOXgIwUZ0=";
       hash_darwin_aarch64 =
-        "sha256-skYFjXBvv+2u/K770Dd3uxFYFer6GGx/EgWfAgzE9pI=";
-      hash_linux = "sha256-67rXlDJeDSpcpEhNQq0rVS2bSWPy3GXVnTo6dwKAnZU=";
-      version = "125.0.6422.78";
+        "sha256-HButB8+2DRiaazyBiT3643sBLaauRAZ1rvmEtt8Whac=";
+      hash_linux = "sha256-6P9K6XTByonHaZYvOP+jTGizkmVdS8Ryn8UwV4BMGdQ=";
+      version = "126.0.6478.126";
     };
     deps = {
       gn = {
-        hash = "sha256-lrVAb6La+cvuUCNI90O6M/sheOEVFTjgpfA3O/6Odp0=";
-        rev = "d823fd85da3fb83146f734377da454473b93a2b2";
+        hash = "sha256-mNoQeHSSM+rhR0UHrpbyzLJC9vFqfxK1SD0X8GiRsqw=";
+        rev = "df98b86690c83b81aedc909ded18857296406159";
         url = "https://gn.googlesource.com/gn";
-        version = "2024-04-10";
+        version = "2024-05-13";
       };
     };
-    hash = "sha256-EA8TzemtndFb8qAp4XWNjwWmNRz/P4Keh3k1Cn9qLEU=";
-    version = "125.0.6422.112";
+    hash = "sha256-Z0QeUG4ykNqdlxXYgLteJQ0jS8apC5kwW5hwlUnhod0=";
+    version = "126.0.6478.126";
   };
   ungoogled-chromium = {
     deps = {
       gn = {
-        hash = "sha256-lrVAb6La+cvuUCNI90O6M/sheOEVFTjgpfA3O/6Odp0=";
-        rev = "d823fd85da3fb83146f734377da454473b93a2b2";
+        hash = "sha256-mNoQeHSSM+rhR0UHrpbyzLJC9vFqfxK1SD0X8GiRsqw=";
+        rev = "df98b86690c83b81aedc909ded18857296406159";
         url = "https://gn.googlesource.com/gn";
-        version = "2024-04-10";
+        version = "2024-05-13";
       };
       ungoogled-patches = {
-        hash = "sha256-vHnXIrDdHGIe8byb41CiEWq3FPTecKg006dU7+iESKA=";
-        rev = "125.0.6422.112-1";
+        hash = "sha256-DLxtXcm4gPVzBeGxjD4harmdQWoH8LKn6GBlhtq/MVM=";
+        rev = "126.0.6478.126-1";
       };
     };
-    hash = "sha256-EA8TzemtndFb8qAp4XWNjwWmNRz/P4Keh3k1Cn9qLEU=";
-    version = "125.0.6422.112";
+    hash = "sha256-Z0QeUG4ykNqdlxXYgLteJQ0jS8apC5kwW5hwlUnhod0=";
+    version = "126.0.6478.126";
   };
 }