multiple versions of ghc

[Malcolm Wallace]

Is it true that on unix, tools like ghc-pkg-6.2.2 and ghc-pkg-6.4
may co-exist, but on Windows the version number is not present,
so a single executable is simply called ghc-pkg.exe?

If so, how do Windows users deal with having more than one version
of ghc installed simultaneously?  Is this just a bug/oversight that
can be fixed?

Regards,
    Malcolm