diff --git a/ghc/PKGBUILD b/ghc/PKGBUILD
index 9587399f2..4cdfcfa96 100644
--- a/ghc/PKGBUILD
+++ b/ghc/PKGBUILD
@@ -70,17 +70,19 @@ replaces=('haskell-array<0.5.1.0'
          )
 
 source=("http://www.haskell.org/ghc/dist/${pkgver}/ghc-${pkgver}-src.tar.xz"
-        "http://www.haskell.org/ghc/dist/${pkgver}/ghc-${pkgver}-testsuite.tar.xz"
-        'build.mk')
+        "http://www.haskell.org/ghc/dist/${pkgver}/ghc-${pkgver}-testsuite.tar.xz")
 md5sums=('8942b6fb393984aeb8304d09bc326851'
-         '4a0d3c147d2027657f49c5a7a4a3f4fe'
-         'c367ef26300648ee9b8aca3dee5c9669')
+         '4a0d3c147d2027657f49c5a7a4a3f4fe')
 
-build() {
+prepare() {
   cd ghc-${pkgver}
 
   cp mk/build.mk{.sample,}
   sed -i '1iBuildFlavour = perf' mk/build.mk
+}
+
+build() {
+  cd ghc-${pkgver}
 
   ./configure \
     --prefix=/usr \
diff --git a/ghc/build.mk b/ghc/build.mk
deleted file mode 100644
index bb57594bf..000000000
--- a/ghc/build.mk
+++ /dev/null
@@ -1,200 +0,0 @@
-# -----------------------------------------------------------------------------
-# A Sample build.mk
-#
-# Uncomment one of the following BuildFlavour settings to get the desired
-# overall build type, and then tweak the options in the relevant section
-# below.
-
-# Uncomment one of these to select a build profile below:
-
-# Full build with max optimisation and everything enabled (very slow build)
-BuildFlavour = perf
-
-# As above but build GHC using the LLVM backend
-#BuildFlavour = perf-llvm
-
-# Fast build with optimised libraries, no profiling (RECOMMENDED):
-#BuildFlavour = quick
-
-# Even faster build.  NOT RECOMMENDED: the libraries will be
-# completely unoptimised, so any code built with this compiler
-# (including stage2) will run very slowly:
-#BuildFlavour = quickest
-
-# Profile the stage2 compiler:
-#BuildFlavour = prof
-
-# A development build, working on the stage 1 compiler:
-#BuildFlavour = devel1
-
-# A development build, working on the stage 2 compiler:
-#BuildFlavour = devel2
-
-# An unregisterised, optimised build of ghc, for porting:
-#BuildFlavour = unreg
-
-GhcLibWays = v
-
-# -------- 1. A Performance/Distribution build--------------------------------
-
-ifeq "$(BuildFlavour)" "perf"
-
-# perf matches the default settings, repeated here for comparison:
-
-SRC_HC_OPTS     = -O -H64m
-GhcStage1HcOpts = -O -fasm
-GhcStage2HcOpts = -O2 -fasm
-GhcHcOpts       = -Rghc-timing
-GhcLibHcOpts    = -O2
-GhcLibWays     += p
-
-ifeq "$(PlatformSupportsSharedLibs)" "YES"
-GhcLibWays += dyn
-endif
-
-endif
-
-# ---------------- Perf build using LLVM -------------------------------------
-
-ifeq "$(BuildFlavour)" "perf-llvm"
-
-SRC_HC_OPTS     = -O -H64m -fllvm
-GhcStage1HcOpts = -O -fllvm
-GhcStage2HcOpts = -O2 -fllvm
-GhcHcOpts       = -Rghc-timing
-GhcLibHcOpts    = -O2
-GhcLibWays     += p
-
-ifeq "$(PlatformSupportsSharedLibs)" "YES"
-GhcLibWays += dyn
-endif
-
-endif
-
-# -------- A Fast build ------------------------------------------------------
-
-ifeq "$(BuildFlavour)" "quickest"
-
-SRC_HC_OPTS        = -H64m -O0 -fasm
-GhcStage1HcOpts    = -O -fasm
-GhcStage2HcOpts    = -O0 -fasm
-GhcLibHcOpts       = -O0 -fasm
-SplitObjs          = NO
-HADDOCK_DOCS       = NO
-BUILD_DOCBOOK_HTML = NO
-BUILD_DOCBOOK_PS   = NO
-BUILD_DOCBOOK_PDF  = NO
-
-endif
-
-# -------- A Fast build with optimised libs ----------------------------------
-
-ifeq "$(BuildFlavour)" "quick"
-
-SRC_HC_OPTS        = -H64m -O0 -fasm
-GhcStage1HcOpts    = -O -fasm
-GhcStage2HcOpts    = -O0 -fasm
-GhcLibHcOpts       = -O -fasm
-SplitObjs          = NO
-HADDOCK_DOCS       = NO
-BUILD_DOCBOOK_HTML = NO
-BUILD_DOCBOOK_PS   = NO
-BUILD_DOCBOOK_PDF  = NO
-
-endif
-
-# -------- Profile the stage2 compiler ---------------------------------------
-
-ifeq "$(BuildFlavour)" "prof"
-
-SRC_HC_OPTS        = -H64m -O0 -fasm
-GhcStage1HcOpts    = -O -fasm
-GhcStage2HcOpts    = -O -fasm
-GhcLibHcOpts       = -O -fasm
-
-GhcLibWays         += p
-GhcProfiled        = YES
-
-SplitObjs          = NO
-HADDOCK_DOCS       = NO
-BUILD_DOCBOOK_HTML = NO
-BUILD_DOCBOOK_PS   = NO
-BUILD_DOCBOOK_PDF  = NO
-
-endif
-
-
-# -------- A Development build (stage 1) -------------------------------------
-
-ifeq "$(BuildFlavour)" "devel1"
-
-SRC_HC_OPTS        = -H64m -O -fasm
-GhcLibHcOpts       = -O -dcore-lint
-GhcStage1HcOpts    = -Rghc-timing -O0 -DDEBUG
-GhcStage2HcOpts    = -Rghc-timing -O -fasm
-SplitObjs          = NO
-HADDOCK_DOCS       = NO
-BUILD_DOCBOOK_HTML = NO
-BUILD_DOCBOOK_PS   = NO
-BUILD_DOCBOOK_PDF  = NO
-LAX_DEPENDENCIES   = YES
-
-endif
-
-# -------- A Development build (stage 2) -------------------------------------
-
-ifeq "$(BuildFlavour)" "devel2"
-
-SRC_HC_OPTS        = -H64m -O -fasm
-GhcLibHcOpts       = -O -dcore-lint
-GhcStage1HcOpts    = -Rghc-timing -O -fasm
-GhcStage2HcOpts    = -Rghc-timing -O0 -DDEBUG
-SplitObjs          = NO
-HADDOCK_DOCS       = NO
-BUILD_DOCBOOK_HTML = NO
-BUILD_DOCBOOK_PS   = NO
-BUILD_DOCBOOK_PDF  = NO
-LAX_DEPENDENCIES   = YES
-
-# After stage 1 and the libraries have been built, you can uncomment this line:
-
-# stage=2
-
-# Then stage 1 will not be touched by the build system, until
-# you comment the line again.  This is a useful trick for when you're
-# working on stage 2 and want to freeze stage 1 and the libraries for
-# a while.
-
-endif
-
-# -------- A Unregisterised build) -------------------------------------------
-
-ifeq "$(BuildFlavour)" "unreg"
-
-# Note that the LLVM backend works in unregisterised mode as well as
-# registerised mode. This often makes it a good choice for porting
-# GHC.
-
-GhcUnregisterised    = YES
-GhcWithNativeCodeGen = NO
-
-SRC_HC_OPTS          = -O -H64m # -fllvm
-GhcStage1HcOpts      = -O
-GhcStage2HcOpts      = -O2
-GhcHcOpts            = -Rghc-timing
-GhcLibHcOpts         = -O2
-SplitObjs            = NO
-HADDOCK_DOCS         = NO
-BUILD_DOCBOOK_HTML   = NO
-BUILD_DOCBOOK_PS     = NO
-BUILD_DOCBOOK_PDF    = NO
-
-endif
-
-# -----------------------------------------------------------------------------
-# Other settings that might be useful
-
-# NoFib settings
-NoFibWays =
-STRIP_CMD = :
-
diff --git a/ghc/print-provides-replaces.sh b/ghc/print-provides-replaces.sh
deleted file mode 100755
index 33d1da051..000000000
--- a/ghc/print-provides-replaces.sh
+++ /dev/null
@@ -1,38 +0,0 @@
-#!/bin/bash
-
-. PKGBUILD
-
-if [[ ! -d src/ghc-${pkgver}/libraries ]]; then
-  echo "error: no directory src/ghc-${pkgver}/libraries: You must extract the source tarball under src/"
-  exit 1
-fi
-
-declare -A exclude
-# no Win32 cause we're not building on windows
-exclude['Win32']=1
-# no integer-simple because we use integer-gmp
-exclude['integer-simple']=1
-# extract excluded libraries from ghc.mk
-for exclude_pkg in $(sed 's/PKGS_THAT_ARE_INTREE_ONLY := //p' -n src/ghc-${pkgver}/ghc.mk); do
-  exclude[${exclude_pkg}]=1
-done
-
-cd src/ghc-${pkgver}/libraries
-
-# $1 is the name of the variable
-# $2 is the string for the test, either '=' or '<'
-print_var() {
-  printf "$1=("
-  for pkg in $(ls ./*/*.cabal | awk -F '/' '{ print $2 }'); do
-    [[ ${exclude[${pkg}]} ]] && continue
-    version=$(awk 'tolower($0) ~ /^version:/ {print $2 }' $pkg/$pkg.cabal)
-    printf "'haskell-$pkg$2$version'\n          "
-  done
-  # also add cabal
-  version=$(awk 'tolower($0) ~ /^version:/ { print $2 }' Cabal/Cabal/Cabal.cabal)
-  printf "'haskell-cabal$2$version'\n          "
-  echo -e '\b)'
-}
-
-print_var 'provides' '='
-print_var 'replaces' '<'