Without the change build fails on `master` as
https://hydra.nixos.org/build/249156752:
In file included from /build/source/dll/base.h:61,
from /build/source/dll/settings.h:18,
from /build/source/dll/settings.cpp:18:
/build/source/dll/settings.h:26:10: error: 'string' in namespace 'std' does not name a type
26 | std::string name;
| ^~~~~~