System tomlplusplus is built against libc++ which conflicts with
libstdc++ used by GCC. While tomlplusplus can be bundled it's only
easy to do via Meson (--force-fallback-for).
/usr/local/bin/ld: hyprpm/CMakeFiles/hyprpm.dir/src/core/DataState.cpp.o: in function `DataState::addNewPluginRepo(SPluginRepository const&)':
DataState.cpp:(.text+0x16b4): undefined reference to `toml::v3::table::get_lower_bound(std::basic_string_view<char, std::char_traits<char> >)'
/usr/local/bin/ld: DataState.cpp:(.text+0x1793): undefined reference to `toml::v3::table::insert_with_hint(toml::v3::impl::table_iterator<true>, toml::v3::key&&, std::unique_ptr<toml::v3::node, std::default_delete<toml::v3::node> >&&)'
/usr/local/bin/ld: DataState.cpp:(.text+0x2c59): undefined reference to `toml::v3::impl::print_to_stream(std::ostream&, toml::v3::table const&)'
/usr/local/bin/ld: hyprpm/CMakeFiles/hyprpm.dir/src/core/DataState.cpp.o: in function `DataState::pluginRepoExists(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)':
DataState.cpp:(.text+0x3739): undefined reference to `toml::v3::ex::parse_file(std::basic_string_view<char, std::char_traits<char> >)'
/usr/local/bin/ld: DataState.cpp:(.text+0x3783): undefined reference to `toml::v3::table::get(std::basic_string_view<char, std::char_traits<char> >)'
/usr/local/bin/ld: DataState.cpp:(.text+0x37ab): undefined reference to `toml::v3::table::get(std::basic_string_view<char, std::char_traits<char> >)'
[...]