GHC 9.12.3 cannot build ghc-lib-parser-9.12.2.20250421

[kazu-yamamoto]

[421 of 456] Compiling GHC.Iface.Errors.Ppr ( compiler/GHC/Iface/Errors/Ppr.hs, dist/build/GHC/Iface/Errors/Ppr.o, dist/build/GHC/Iface/Errors/Ppr.dyn_o )
[422 of 456] Compiling GHC.Tc.Errors.Ppr ( compiler/GHC/Tc/Errors/Ppr.hs, dist/build/GHC/Tc/Errors/Ppr.o, dist/build/GHC/Tc/Errors/Ppr.dyn_o )
compiler/GHC/Tc/Errors/Ppr.hs:44:1: error: [GHC-61948]
    Could not find module ‘GHC.Internal.TH.Ppr’.
    Perhaps you meant
      GHC.Internal.TH.Lib (from ghc-internal-9.1203.0)
      GHC.Internal.Ptr (from ghc-internal-9.1203.0)
      GHC.Internal.TH.Lift (from ghc-internal-9.1203.0)
    Use -v to see a list of the files searched for.
   |
44 | import qualified GHC.Internal.TH.Ppr as TH
   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

It seems to me that GHC.Internal.TH.Ppr is removed since GHC 9.12.3.

[shayne-fletcher]

hey kazu. well, building flavor ghc-lib-parser-9.12.2 with a ghc-9.12.3 build compiler isn't a supported configuration (ghc-lib doesn't allow for building "backwards" any more than ghc itself does) but, i pushed a 9.12.3.20251228 package for you which seems to work ok.

[kazu-yamamoto]

Thanks.
I works for me!