[Haskell-cafe] How to install haddock with ghc-7.2.1?

[Daniel Fischer]

On Thursday 06 October 2011, 15:20:44, Paulo Pocinho wrote:
> Implicit import declaration:
>     base:Prelude can't be safely imported! The package (base) the
> module resides in isn't trusted.

Due to an oversight, the base package isn't trusted by default in 
ghc-7.2.1, run

C:\> ghc-pkg trust base

to trust it.