Symlink ~/.ghcup/share
Executing ghcup set <version> now creates a symlink from ~/.ghcup/share to ~/.ghcup/ghc/<version>/share.
This allows man to automatically find the correct manpage, provided ~/.ghcup/bin is on the PATH.
Like all symlinks created by ghcup set, it is removed on ghcup rm <current-ghc>.
Fixes #122 (closed).
Edited by Jan Felix Langenbach