Setting `clang_base_path` [0] does skip [1] a clang version check [2]
that would fail in our case:
```
configuring
ERROR at //build/config/compiler/BUILD.gn:1314:22: Script returned non-zero exit code.
clang_revision = exec_script("//tools/clang/scripts/update.py",
^----------
Current dir: /tmp/nix-build-chromium-unwrapped-107.0.5304.29.drv-0/chromium-107.0.5304.29/out/Release/
Command: python3 /tmp/nix-build-chromium-unwrapped-107.0.5304.29.drv-0/chromium-107.0.5304.29/tools/clang/scripts/update.py --print-revision --verify-version=16.0.0
Returned 1 and printed out:
The expected clang version is llvmorg-16-init-4609-g025a5b22-2 but the actual version is
Did you run "gclient sync"?
See //build/config/BUILDCONFIG.gn:329:3: which caused the file to be included.
"//build/config/compiler:afdo",
^-----------------------------
error: builder for '/nix/store/02riyhzvrgn2vaab29d3gipxzkx6nb44-chromium-unwrapped-107.0.5304.29.drv' failed with exit code 1
```
I also chose to disable the Qt support for now. The Qt support is
enabled by default on Linux [3] but we need to add the required
dependencies first to fix the build (and my current priority is to get a
basic build working for the security critical stable channel update):
```
configuring
ERROR at //build/config/linux/pkg_config.gni:104:17: Script returned non-zero exit code.
pkgresult = exec_script(pkg_config_script, args, "value")
^----------
Current dir: /tmp/nix-build-chromium-unwrapped-107.0.5304.62.drv-0/chromium-107.0.5304.62/out/Release/
Command: python3 /tmp/nix-build-chromium-unwrapped-107.0.5304.62.drv-0/chromium-107.0.5304.62/build/config/linux/pkg-config.py Qt5Core Qt5Widgets
Returned 1.
stderr:
Package Qt5Core was not found in the pkg-config search path.
Perhaps you should add the directory containing `Qt5Core.pc'
to the PKG_CONFIG_PATH environment variable
No package 'Qt5Core' found
Package Qt5Widgets was not found in the pkg-config search path.
Perhaps you should add the directory containing `Qt5Widgets.pc'
to the PKG_CONFIG_PATH environment variable
No package 'Qt5Widgets' found
Could not run pkg-config.
See //ui/qt/BUILD.gn:13:1: whence it was called.
pkg_config("qt5_config") {
^-------------------------
See //ui/linux/BUILD.gn:54:15: which caused the file to be included.
deps += [ "//ui/qt" ]
^--------
error: builder for '/nix/store/3zzddkh74cnhvq6nql32y9pnbvzf2jv9-chromium-unwrapped-107.0.5304.62.drv' failed with exit code 1
```
[0]: https://source.chromium.org/chromium/chromium/src/+/refs/tags/107.0.5304.62:docs/clang.md
[1]: https://source.chromium.org/chromium/chromium/src/+/refs/tags/107.0.5304.62:build/config/compiler/BUILD.gn;l=1306
[2]: https://source.chromium.org/chromium/chromium/src/+/refs/tags/107.0.5304.62:tools/clang/scripts/update.py;l=358
[3]: https://source.chromium.org/chromium/chromium/src/+/refs/tags/107.0.5304.62:ui/qt/qt.gni;l=8
