Make Happy Explicitly Depend on Perl

Neil Mitchell ndmitchell at
Sun Jan 10 16:44:44 EST 2010

>> Probably no-one has ever built happy on a machine without perl so this
>> has never been noticed. I think it's more polite to fail at the
> More likely, it's because until fairly recently ghc required perl (for the
> Evil Mangler).

I have noticed and reported this in the past. On Windows GHC installs
Perl, but doesn't put it on the %PATH%, which causes building happy to
fail on a default Windows install of GHC.

Thanks, Neil

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