[Nix-dev] ghcWithPackages appears broken in nixpkgs HEAD?

[Raahul Kumar]

Is there a bug id for this in the ghc bugtracker? It sounds very annoying.

Aloha,
RK.

On Wed, Mar 25, 2015 at 3:37 AM, Peter Simons <simons at cryp.to> wrote:

> Hi Michael,
>
> my guess is that you've run into a design problem in GHC that causes the
> compiler to assign randomly differing package IDs every now and then.
> The result is that libraries built locally don't fit to ones downloaded
> from Hydra. The only way out of this mess is to garbage collect all
> Haskell packages by running
>
>   $ nix-store --delete /nix/store/*-ghc-7.8.4
>
> and to compile or download everything again from scratch.
>
> Best regards,
> Peter
>
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