macOS brew install three versions of GHC

[WuMingIT]

brew lists the following deps among others:

ghc, [email protected], [email protected]

and consequently downloads:

==> Fetching ghc ==> Fetching [email protected] ==> Fetching [email protected]

Any reason for it?

Also noticed Python is called twice every time. As example:

==> /usr/local/opt/[email protected]/libexec/bin/python -m pip install . ==> /usr/local/opt/[email protected]/libexec/bin/python -m pip install .