Hennadii Stepanov 551e13abf8
guix: Adjust for Qt 6
1. Do not set `C{PLUS}_INCLUDE_PATH` variables

The build system for Qt 6 differs entirely from that of Qt 5. Building a
set of native Qt 6 tools now forms a separate step when cross-compiling.
Under these new circumstances, the `C{PLUS}_INCLUDE_PATH` environment
variables may alter the default include directories for both native and
cross compilers.

Previously, we explicitly unset these variables when invoking clang for
cross-compiling; however, that approach proved suboptimal (see #30451).

This change sets the native toolchain for dependencies explicitly,
rather than relying on the `C{PLUS}_INCLUDE_PATH` environment variables.
Additionally, it facilitates the transition towards using clang for
building native tools when cross-compiling for macOS.

2. Add `ninja` package.

3. Adjust allowed symbol lists.
2025-04-02 09:15:01 +01:00
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2025-04-02 09:15:01 +01:00