Hyprland plugin API requires wlroots headers. Dropping
--skip-subprojects will fix plugins but may break system wlroots.
Instead copy and adjust a part of `make installheaders`.
Example error this tries to fix:
In file included from hy3/src/main.cpp:4:
In file included from /usr/local/include/hyprland/src/Compositor.hpp:7:
In file included from /usr/local/include/hyprland/src/defines.hpp:1:
/usr/local/include/hyprland/src/includes.hpp:36:10: fatal error: 'wlr/backend.h' file not found
36 | #include <wlr/backend.h>
| ^~~~~~~~~~~~~~~
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