Pin a package?

wagnerdm at wagnerdm at
Sat Jan 12 20:45:14 CET 2013

Quoting Stephen Paul Weber <singpolyma at>:

> Is there a way to tell cabal to refuse to upgrade a package?  I'd  
> like to pin my `bytestring` to the version that shipped with my GHC.

cabal install --constraint "bytestring installed"


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