$NetBSD: patch-compiler_ghc.cabal.in,v 1.1 2025/02/02 09:40:50 pho Exp $

Fix parallel builds. I don't know much about the magic behind ghc-bignum,
but stage-2 compiler occasionally fails to build without ghc-bignum being
already built:

    ghc: panic! (the 'impossible' happened)                                         
      GHC version 9.10.1:
            lookupGlobal 
      ErrorWithoutFlag
        Failed to load interface for ‘GHC.Num.BigNat’.
        There are files missing in the ‘ghc-bignum-1.3’ package,
        try running 'ghc-pkg check'.

--- compiler/ghc.cabal.in.orig	2025-02-02 08:39:33.634801110 +0000
+++ compiler/ghc.cabal.in
@@ -121,6 +121,7 @@ Library
                    exceptions == 0.10.*,
                    semaphore-compat,
                    stm,
+                   ghc-bignum,
                    ghc-boot   == @ProjectVersionMunged@,
                    ghc-heap   == @ProjectVersionMunged@,
                    ghci == @ProjectVersionMunged@