ghc::filesystem install its headers and cmake files into system

[guoyunhe]

After running make install, I see it installed some hpp and cmake file installed in /usr/include/ghc and /usr/lib64/cmake. They are not needed by Play! and should not be installed.

[Zer0xFF]

Play! doesn't do anything special in terms of specifying those files for install.
so it's its probably best to redirect this issue to https://github.com/gulrak/filesystem/ perhaps an option to enable/disable install, so we can set option on our end.

what are the cmake related stuff currently being installed?

[guoyunhe]

Good news. With new release of ghc::filesystem, you can set GHC_FILESYSTEM_WITH_INSTALL=OFF to disable the installation of these files.

[Zer0xFF]

can be closed

[guoyunhe]

Yes, it has been fixed.