New and improved ghc-in-ghci target

Michael Sloan mgsloan at
Tue Mar 12 17:48:48 UTC 2019

Cool!  That's very nice that it only takes a few minutes from a clean tree.

I sometimes find it useful to also be able to run code from the repl.
Might be good to support both usage modes via hadrian.  Though,
perhaps it's sufficient to have both this and


On Tue, Mar 12, 2019 at 6:31 AM Matthew Pickering
<matthewtpickering at> wrote:
> Hi all,
> My patch to improve the ghc-in-ghci target just got merged a few
> minutes ago. Now from a clean tree it  only takes a few minutes to
> launch the target. You can now load ghc into ghci by running the
> following script:
> ./hadrian/
> Please try it out and open tickets if there are any issues on your system.
> Matt
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