installed msys under wine.
pick a package, any package.
sit back... and wait for... well over one hour, possibly two to three, whilst every incarnation of /bin/sh.exe takes two seconds to start up.
using strace, it can be seen that over 200 truetype and other fonts are loaded (windows system fonts and fonts in /usr/share/); nssswitch is activated; x11 libraries are fired up - the list goes on.
over 40 dynamic libraries are loaded (both windows dlls and unix system libraries).
running a "blank" (basic hello world) application by contrast takes a few milliseconds.
it's well known that /bin/sh.exe takes forever to run (tenths of seconds) on windows, but _two seconds_ under wine makes it completely unusable.