Viewing the types declared in GHC.Prim in local machine

Richard Eisenberg rae at
Mon Mar 19 16:59:41 UTC 2018

I don't think Prim.hs exists (anymore).

Depending on how you installed GHC, you might have the Haddock doc files locally, which includes Prim.

Or, you can :browse GHC.Prim in GHCi.

Or, you can look at compiler/prelude/primops.txt.pp which generates the term-level definitions in Prim.

Or, you can look at compiler/prelude/TysPrim.hs which "generates" the type-level definitions in Prim.

I hope this helps!

> On Mar 19, 2018, at 11:53 AM, Abhiroop Sarkar <asiamgenius at> wrote:
> Is it possible to view the types generated in the GHC.Prim module on my local machine?
> The commentary[1] states that it is a virtual module and a source file including dummy declarations are available in this location: `libraries/base/GHC/Prim.hs`, however, upon downloading and building the latest GHC codebase I could not find this dummy file on my machine. Do I have to modify my Makefile somehow to generate these dummy types?
> For building, I have followed the instructions mentioned here[2] and set `BuildFlavour = devel2`.
> Thanks,
> Abhiroop Sarkar
> [1] <>
> [2] <>
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the ghc-devs mailing list