{ pkgs, haskellLib }: with haskellLib; self: super: { # This compiler version needs llvm 7.x. llvmPackages = pkgs.llvmPackages_7; # Disable GHC 8.8.x core libraries. array = null; base = null; binary = null; bytestring = null; Cabal = null; containers = null; deepseq = null; directory = null; filepath = null; ghc-boot = null; ghc-boot-th = null; ghc-compact = null; ghc-heap = null; ghc-prim = null; ghci = null; haskeline = null; hpc = null; integer-gmp = null; libiserv = null; mtl = null; parsec = null; pretty = null; process = null; rts = null; stm = null; template-haskell = null; terminfo = null; text = null; time = null; transformers = null; unix = null; xhtml = null; # Ignore overly restrictive upper version bounds. doctest = doJailbreak super.doctest; # These packages don't work and need patching and/or an update. primitive = markBrokenVersion "0.6.4.0" super.primitive; }