From owner-freebsd-questions@FreeBSD.ORG  Mon Jul 30 04:03:42 2012
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Date: Sun, 29 Jul 2012 23:05:24 -0500 (CDT)
From: Robert Bonomi <bonomi@mail.r-bonomi.com>
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To: freebsd-questions@freebsd.org
In-Reply-To: <20120730030512.2296a738.freebsd@edvax.de>
Subject: Re: Where did my port go?
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> From owner-freebsd-questions@freebsd.org  Sun Jul 29 20:07:54 2012
> Date: Mon, 30 Jul 2012 03:05:12 +0200
> From: Polytropon <freebsd@edvax.de>
> To: Kyle Hanson <hanooter@gmail.com>
> Cc: freebsd-questions@freebsd.org
> Subject: Re: Where did my port go?
>
> On Sun, 29 Jul 2012 19:51:06 -0500, Kyle Hanson wrote:
> > To clarify I could use the haskell commands "runhaskell" cabal etc
> > yesterday. When I restarted my computer it can't find the command so I cant
> > use where is. The commands disappeared.
>
> Check the presence of /usr/local/bin/runhaskell. If it's
> not there, _repeat_ the port installation. Also check if
> the ghc port has been properly installed (as I assume
> that hs-haskell-platform depends on that. There is no
> reason why a command should disappear other than it has
> been deleted manually or by a deinstallation (either by
> ports infrastructure or pkg_delete).

It is also _possible_ that the binaries were installed in some
'non-standard' location, with that location added to the path.

The OP might try 'find / -name runhaskell -print' and see if it
finds anything.