Some includes in GLM start with "glm", like:
#include <glm/ext/scalar_relational.hpp> in glm\gtx\color_space.inl
Or #include <glm/glm.hpp> in glm/glm.cppm

Those includes break when using "light" releases, consider simple project structure:

Project/
  lib/
    glm/
      ext/...
      gtc/...
      gtx/...
      glm.hpp
      glm.cppm
      ...

To make this work, user would have to add the whole "lib" directory as an include root.