notice that what you see is just a warning. Cabal will still pass the extension to GHC when compiling the package.
Ah, that is helpful, thank you.
Simon
On Mon, 16 Mar 2026 at 03:57, Andrea Bedini
Simon,
notice that what you see is just a warning. Cabal will still pass the extension to GHC when compiling the package.
Andrea
On Mon, 16 Mar 2026, at 1:17 AM, Simon Peyton Jones via ghc-devs wrote:
Friends
As part of the reinstallable base project I'm adding an extension "ImplicitKnownKeyNames" to GHC. But if I put "NoImplicitKnownKeyNames" in base.cabal.in I get the error
Warning: [unknown-extension] Unknown extensions: NoImplicitKnownKeyNames
when building the base library. I think this comes from cabal.
How can I tell cabal about the new extension?
Thanks
Simon _______________________________________________ ghc-devs mailing list -- ghc-devs@haskell.org To unsubscribe send an email to ghc-devs-leave@haskell.org
-- Andrea Bedini https://www.andreabedini.com