installing random-

Daniel Fischer at
Tue Apr 22 19:27:19 UTC 2014

On Tuesday 22 April 2014, 22:53:36, Sergei Meshveliani wrote:
> People,
> can you, please, explain me how to make the `random' package visible for
> GHC ?

It is visible to GHC, but `cabal install random` installed the package into 
the user database:

> and now  ghc-pkg list
> shows
> -------------------------------------
> /home/mechvel/ghc/7.8.2/inst0/lib/ghc-7.8.2/package.conf.d
>    ...
> /home/mechvel/.ghc/x86_64-linux-7.8.2/package.conf.d
>    random-
> --------------------------------------


>    make configure
> reports
>   runghc Setup.hs configure --ghc

by default only looks into the global package database.

If you don't want to use the cabal tool to install your DoCon and stick with 
the `runghc Setup.hs ...` way, you have the choice to either

- pass the --user flag to `runghc Setup.hs configure` so that it uses also the 
user package database where your random package sits (then DoCon is also 
installed for the user and not globally), or

- install random in the global package database, `cabal install --global 
random` so that `runghc Setup.hs ...` finds the package in the global DB.


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