dev-lang/ghc: get rid of ncurses runtime dependency, bug #557478
authorSergei Trofimovich <slyfox@gentoo.org>
Thu, 27 Aug 2015 22:24:35 +0000 (23:24 +0100)
committerSergei Trofimovich <slyfox@gentoo.org>
Thu, 27 Aug 2015 22:24:49 +0000 (23:24 +0100)
Recently gentoo updated ncurses to sys-libs/ncurses-6.0.
It changed ABI from libncursesw.so.5 to libncursesw.so.6
in an incompatible way.

The change disables ncurses backend for haskeline for
booter binary (USE=ghcmakebinary).

Bug: https://bugs.gentoo.org/show_bug.cgi?id=557478

Package-Manager: portage-2.2.20

dev-lang/ghc/Manifest
dev-lang/ghc/ghc-7.10.2-r1.ebuild [new file with mode: 0644]

index 7406de315e9536880ad2552d8d364740cdb59441..24c2cab2819b4ecc20fb53c990bac1391e3d2b38 100644 (file)
@@ -6,6 +6,8 @@ DIST ghc-7.8.3-src.tar.xz 9160092 SHA256 b0cd96a549ba3b5e512847a4a8cd1a3174e4b2b
 DIST ghc-7.8.4-ia64-CLOSUREs-regenerated.patch.gz 13268 SHA256 3bdff22e654aee6f942d43edf1bf6cf70404c0152c4fcf89276f10d2c4c5b4b9 SHA512 a655713e06324b56f0041edf70837487e296d28e6f3ee35fe116b9938765aaf3469d25e92645e0940655ed3607dff27d3826fe0f995c84e81b51bfc956816e7d WHIRLPOOL d2cb53bdc6debc0278d554168ea3ab22b0fd8314adac81444637278a92d21b766280fedfb4b7d1b4540c7381c7962dec6b13a799ab2fee4d456fe2875d5c6a5b
 DIST ghc-7.8.4-src.tar.bz2 10600755 SHA256 59e3bd514a1820cc1c03e1808282205c0b8518369acae12645ceaf839e6f114b SHA512 079a53891d8ebd8d9b88da96170e60981608a619f8282e4b7948f35244e99bd87277649ac7fcebc227a61a4d21960db8d5e5b9e92f2c69c82d8d68d7fd0a41d3 WHIRLPOOL a9be7641adbd237ed6e0f644c312e655e98be9566097aee5e2c0022e8756d5b2236e42dd86d76c638a001b5ca3f67307e89ec0cd003a92cd112a5d6d3e3d8467
 DIST ghc-bin-7.10.2-amd64.tbz2 112028560 SHA256 536297ac402da44ec1aafb1a937960883d12d192db16715ca34ab6469773a4c7 SHA512 207d8032c99d52bf4215ddeea2dbcd5816bb8d4caf2c3c31190e3ca92b49667d98a4f97aaf4cd6b40090f150854d520f75b5420dfe1ade7f036cf35d3dcb5100 WHIRLPOOL 8e43956a61c2c0fead242e3b179cde4918c04f3db7dbb27cc986f00f981261d98028ead82548b87d183d8da928635d5db4aa62ff1161f4077e5370483530a316
+DIST ghc-bin-7.10.2-r1-amd64.tbz2 111915962 SHA256 3c5972b69be650bc2d3a07ff8a6be97a2d8fd07387aee155183960ebcd7bd60c SHA512 e87c7c177cbfac7e8206c3ad94ab36d568d3b294311b60df5db50e3c6d46e0b5fae77b8b74701b6920f419c0bc7f763fe478760f14b00c1fc18fb79e9b17bb4f WHIRLPOOL b5be3ef924d729e77626ce69859ffa8952e1f5053a36672cef5713aa60b7167ab9d3886cc8052cacfdb6756d50db444b3f80bca77a932719a16cc9b4583e8319
+DIST ghc-bin-7.10.2-r1-x86.tbz2 113566669 SHA256 d0ff86c34d009e7980d3b1ea85b24dfe3854d85cf2aece36dbad38078283a382 SHA512 a2bfef656603db15147399424733f1f97867b0ad883880ee8912bbbad7fe42646caf6023a17653119ad7ea246ffe3f2ecff5b924c6912c41fb601d51c032c2ce WHIRLPOOL 2f2d4accbbaa3202754a9463dc321d0b830bc4710db36c5ca4dcf3ae00882f34db16bf613ba52712671aee69bb5ae2747d12a29a520a29fd057c86ec20e53286
 DIST ghc-bin-7.10.2-x86.tbz2 113900477 SHA256 eefb7a3002e3dcdd6d936b2b2826eadf3cd100352babad4c9a355b944064240a SHA512 61dae4b9c80bfef6b1e0550c77b70f25d11f4a9fbe3b57d6c4ad451b4b584884432405d39dc32b9f85f3a5ad9d02657356ae0ebd99518848f3d330314c74b595 WHIRLPOOL da0d7eb62d2ee2aeb80a3f495da2ff123e29151b7517fbcd212f83ab3722638f10019511f4f237e8e001c68dd957ed2817fb0f1a2b42c2710239343f1d801496
 DIST ghc-bin-7.4.2-alpha.tbz2 130483507 SHA256 cd8e72e569574f137bf10fcdb4337bb0dc320deb2a2c4d72529a821735c53ae6 SHA512 6fb99dea706965afa60f4aeb68da3da1c69dda477f5fcfb4e67b73d75b78583193148ce9f623a356679a57f1a740f8010f28a22f08e56ace50f3fcd42142f83f WHIRLPOOL e5ec69ab24dc963ac709f13928c0e35931d5d50ca6b21dfb0aa79f9088c0ce1196b64bb4d9668e35d73dcdf9e2df9c3da59c95eaf3db8b793a6bb65b1f4ba6c0
 DIST ghc-bin-7.4.2-amd64-stable-glibc.tbz2 93139900 SHA256 f06dff00585cc1a8ecc8ac29aeca7fdc601d272eed29d7613f7a2f2924cad585 SHA512 9b725f2613dd9013851a16eaea4000ea424c51cbafa97d3860f120fdb9936247f8c65208775a80a2f49b74946ddda2e843a54dec00b78c521197374aa3dd2d50 WHIRLPOOL 9e2630b1de40a059c324be38a1fe68b16ea484bc7afc2a397ea05192263d1964aed1d29fde543622ceab12ed2df111204576fdc72b7e35b2bbf9c6b9519901d1
diff --git a/dev-lang/ghc/ghc-7.10.2-r1.ebuild b/dev-lang/ghc/ghc-7.10.2-r1.ebuild
new file mode 100644 (file)
index 0000000..d830880
--- /dev/null
@@ -0,0 +1,651 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=5
+
+# to make make a crosscompiler use crossdev and symlink ghc tree into
+# cross overlay. result would look like 'cross-sparc-unknown-linux-gnu/ghc'
+#
+# 'CTARGET' definition and 'is_crosscompile' are taken from 'toolchain.eclass'
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} = ${CHOST} ]] ; then
+       if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
+               export CTARGET=${CATEGORY/cross-}
+       fi
+fi
+
+inherit autotools bash-completion-r1 eutils flag-o-matic ghc-package
+inherit multilib pax-utils toolchain-funcs versionator
+
+DESCRIPTION="The Glasgow Haskell Compiler"
+HOMEPAGE="http://www.haskell.org/ghc/"
+
+# we don't have any binaries yet
+arch_binaries=""
+
+# sorted!
+#arch_binaries="$arch_binaries alpha? ( http://code.haskell.org/~slyfox/ghc-alpha/ghc-bin-${PV}-alpha.tbz2 )"
+#arch_binaries="$arch_binaries arm? ( http://code.haskell.org/~slyfox/ghc-arm/ghc-bin-${PV}-arm.tbz2 )"
+arch_binaries="$arch_binaries amd64? ( http://code.haskell.org/~slyfox/ghc-amd64/ghc-bin-${PVR}-amd64.tbz2 )"
+#arch_binaries="$arch_binaries ia64?  ( http://code.haskell.org/~slyfox/ghc-ia64/ghc-bin-${PV}-ia64-fixed-fiw.tbz2 )"
+#arch_binaries="$arch_binaries ppc? ( http://code.haskell.org/~slyfox/ghc-ppc/ghc-bin-${PV}-ppc.tbz2 )"
+#arch_binaries="$arch_binaries ppc64? ( http://code.haskell.org/~slyfox/ghc-ppc64/ghc-bin-${PV}-ppc64.tbz2 )"
+#arch_binaries="$arch_binaries sparc? ( http://code.haskell.org/~slyfox/ghc-sparc/ghc-bin-${PV}-sparc.tbz2 )"
+arch_binaries="$arch_binaries x86? ( http://code.haskell.org/~slyfox/ghc-x86/ghc-bin-${PVR}-x86.tbz2 )"
+
+# various ports:
+#arch_binaries="$arch_binaries x86-fbsd? ( http://code.haskell.org/~slyfox/ghc-x86-fbsd/ghc-bin-${PV}-x86-fbsd.tbz2 )"
+
+# 0 - yet
+yet_binary() {
+       case "${ARCH}" in
+               #alpha) return 0 ;;
+               #arm)
+               #       ewarn "ARM binary is built on armv5tel-eabi toolchain. Use with caution."
+               #       return 0
+               #;;
+               amd64) return 0 ;;
+               #ia64) return 0 ;;
+               #ppc) return 0 ;;
+               #ppc64) return 0 ;;
+               #sparc) return 0 ;;
+               x86) return 0 ;;
+               *) return 1 ;;
+       esac
+}
+
+GHC_PV=${PV}
+#GHC_PV=7.10.1.20150630 # uncomment only for -rc ebuilds
+GHC_P=${PN}-${GHC_PV} # using ${P} is almost never correct
+
+#SRC_URI="!binary? ( http://downloads.haskell.org/~ghc/${PV/_rc/-rc}/${GHC_P}-src.tar.bz2 )"
+# Upstream tarball was repackaged and inplace-updated. CDN cached old version for
+# many users
+SRC_URI="!binary? ( http://dev.gentoo.org/~slyfox/distfiles/${GHC_P}-src.tar.bz2 )"
+S="${WORKDIR}"/${GHC_P}
+
+[[ -n $arch_binaries ]] && SRC_URI+=" !ghcbootstrap? ( $arch_binaries )"
+
+BUMP_LIBRARIES=(
+       # "hackage-name          hackage-version"
+       "binary                  0.7.5.0"
+       "hoopl                   3.10.1.0"
+       "transformers            0.4.3.0"
+)
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+KEYWORDS="~amd64 ~x86 ~amd64-linux ~x86-linux"
+IUSE="doc ghcbootstrap ghcmakebinary +gmp"
+IUSE+=" binary"
+IUSE+=" elibc_glibc" # system stuff
+
+RDEPEND="
+       >=dev-lang/perl-5.6.1
+       >=dev-libs/gmp-5:=
+       sys-libs/ncurses:=[unicode]
+       !ghcmakebinary? ( virtual/libffi:= )
+       !kernel_Darwin? ( >=sys-devel/gcc-2.95.3:* )
+       kernel_linux? ( >=sys-devel/binutils-2.17:* )
+       kernel_SunOS? ( >=sys-devel/binutils-2.17:* )
+"
+
+# force dependency on >=gmp-5, even if >=gmp-4.1 would be enough. this is due to
+# that we want the binaries to use the latest versioun available, and not to be
+# built against gmp-4
+
+# similar for glibc. we have bootstrapped binaries against glibc-2.17
+DEPEND="${RDEPEND}
+       doc? ( app-text/docbook-xml-dtd:4.2
+               app-text/docbook-xml-dtd:4.5
+               app-text/docbook-xsl-stylesheets
+               >=dev-libs/libxslt-1.1.2 )
+       !ghcbootstrap? ( !prefix? ( elibc_glibc? ( >=sys-libs/glibc-2.17 ) ) )"
+
+PDEPEND="!ghcbootstrap? ( =app-admin/haskell-updater-1.2* )"
+
+REQUIRED_USE="?? ( ghcbootstrap binary )"
+
+# yeah, top-level 'use' sucks. I'd like to have it in 'src_install()'
+use binary && QA_PREBUILT="*"
+
+# haskell libraries built with cabal in configure mode, #515354
+QA_CONFIGURE_OPTIONS+=" --with-compiler --with-gcc"
+
+is_crosscompile() {
+       [[ ${CHOST} != ${CTARGET} ]]
+}
+
+append-ghc-cflags() {
+       local persistent compile assemble link
+       local flag ghcflag
+
+       for flag in $*; do
+               case ${flag} in
+                       persistent)     persistent="yes";;
+                       compile)        compile="yes";;
+                       assemble)       assemble="yes";;
+                       link)           link="yes";;
+                       *)
+                               [[ ${compile}  ]] && ghcflag="-optc${flag}"  CFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+                                       [[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+                               [[ ${assemble} ]] && ghcflag="-opta${flag}"  CFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+                                       [[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+                               [[ ${link}     ]] && ghcflag="-optl${flag}" LDFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+                                       [[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+                               ;;
+               esac
+       done
+}
+
+# $1 - lib name (under libraries/)
+# $2 - lib version
+# example: bump_lib "transformers" "0.4.2.0"
+bump_lib() {
+       local pn=$1 pv=$2
+       local p=${pn}-${pv}
+       local f
+
+       einfo "Bumping ${pn} up to ${pv}"
+
+       for f in ghc.mk GNUmakefile; do
+               mv libraries/"${pn}"/$f "${WORKDIR}"/"${p}"/$f || die
+       done
+       mv libraries/"${pn}" "${WORKDIR}"/"${pn}".old || die
+       mv "${WORKDIR}"/"${p}" libraries/"${pn}" || die
+}
+
+update_SRC_URI() {
+       local p pn pv
+       for p in "${BUMP_LIBRARIES[@]}"; do
+               set -- $p
+               pn=$1 pv=$2
+
+               SRC_URI+=" mirror://hackage/package/${pn}/${pn}-${pv}.tar.gz"
+       done
+}
+
+update_SRC_URI
+
+bump_libs() {
+       local p pn pv
+       for p in "${BUMP_LIBRARIES[@]}"; do
+               set -- $p
+               pn=$1 pv=$2
+
+               bump_lib "${pn}" "${pv}"
+       done
+}
+
+ghc_setup_cflags() {
+       if is_crosscompile; then
+               export CFLAGS=${GHC_CFLAGS-"-O2 -pipe"}
+               export LDFLAGS=${GHC_LDFLAGS-"-Wl,-O1"}
+               einfo "Crosscompiling mode:"
+               einfo "   CHOST:   ${CHOST}"
+               einfo "   CTARGET: ${CTARGET}"
+               einfo "   CFLAGS:  ${CFLAGS}"
+               einfo "   LDFLAGS: ${LDFLAGS}"
+               return
+       fi
+       # We need to be very careful with the CFLAGS we ask ghc to pass through to
+       # gcc. There are plenty of flags which will make gcc produce output that
+       # breaks ghc in various ways. The main ones we want to pass through are
+       # -mcpu / -march flags. These are important for arches like alpha & sparc.
+       # We also use these CFLAGS for building the C parts of ghc, ie the rts.
+       strip-flags
+       strip-unsupported-flags
+
+       # Cmm can't parse line numbers #482086
+       replace-flags -ggdb[3-9] -ggdb2
+
+       GHC_FLAGS=""
+       GHC_PERSISTENT_FLAGS=""
+       for flag in ${CFLAGS}; do
+               case ${flag} in
+
+                       # Ignore extra optimisation (ghc passes -O to gcc anyway)
+                       # -O2 and above break on too many systems
+                       -O*) ;;
+
+                       # Arch and ABI flags are what we're really after
+                       -m*) append-ghc-cflags compile assemble ${flag};;
+
+                       # Sometimes it's handy to see backtrace of RTS
+                       # to get an idea what happens there
+                       -g*) append-ghc-cflags compile ${flag};;
+
+                       # Ignore all other flags, including all -f* flags
+               esac
+       done
+
+       for flag in ${LDFLAGS}; do
+               append-ghc-cflags link ${flag}
+       done
+
+       # hardened-gcc needs to be disabled, because the mangler doesn't accept
+       # its output.
+       gcc-specs-pie && append-ghc-cflags persistent compile link -nopie
+       gcc-specs-ssp && append-ghc-cflags persistent compile      -fno-stack-protector
+
+       # prevent from failind building unregisterised ghc:
+       # http://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg171602.html
+       use ppc64 && append-ghc-cflags persistent compile -mminimal-toc
+       # fix the similar issue as ppc64 TOC on ia64. ia64 has limited size of small data
+       # currently ghc fails to build haddock
+       # http://osdir.com/ml/gnu.binutils.bugs/2004-10/msg00050.html
+       use ia64 && append-ghc-cflags persistent compile -G0
+}
+
+# substitutes string $1 to $2 in files $3 $4 ...
+relocate_path() {
+       local from=$1
+       local   to=$2
+       shift 2
+       local file=
+       for file in "$@"
+       do
+               sed -i -e "s|$from|$to|g" \
+                       "$file" || die "path relocation failed for '$file'"
+       done
+}
+
+# changes hardcoded ghc paths and updates package index
+# $1 - new absolute root path
+relocate_ghc() {
+       local to=$1
+
+       # libdir for prebuilt binary and for current system may mismatch
+       # It does for prefix installation for example: bug #476998
+       local bin_ghc_prefix=${WORKDIR}/usr
+       local bin_libpath=$(echo "${bin_ghc_prefix}"/lib*)
+       local bin_libdir=${bin_libpath#${bin_ghc_prefix}/}
+
+       # backup original script to use it later after relocation
+       local gp_back="${T}/ghc-pkg-${GHC_PV}-orig"
+       cp "${WORKDIR}/usr/bin/ghc-pkg-${GHC_PV}" "$gp_back" || die "unable to backup ghc-pkg wrapper"
+
+       if [[ ${bin_libdir} != $(get_libdir) ]]; then
+               einfo "Relocating '${bin_libdir}' to '$(get_libdir)' (bug #476998)"
+               # moving the dir itself is not strictly needed
+               # but then USE=binary would result in installing
+               # in '${bin_libdir}'
+               mv "${bin_ghc_prefix}/${bin_libdir}" "${bin_ghc_prefix}/$(get_libdir)" || die
+
+               relocate_path "/usr/${bin_libdir}" "/usr/$(get_libdir)" \
+                       "${WORKDIR}/usr/bin/ghc-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/ghci-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/ghc-pkg-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/hsc2hs" \
+                       "${WORKDIR}/usr/bin/runghc-${GHC_PV}" \
+                       "$gp_back" \
+                       "${WORKDIR}/usr/$(get_libdir)/${GHC_P}/package.conf.d/"*
+       fi
+
+       # Relocate from /usr to ${EPREFIX}/usr
+       relocate_path "/usr" "${to}/usr" \
+               "${WORKDIR}/usr/bin/ghc-${GHC_PV}" \
+               "${WORKDIR}/usr/bin/ghci-${GHC_PV}" \
+               "${WORKDIR}/usr/bin/ghc-pkg-${GHC_PV}" \
+               "${WORKDIR}/usr/bin/hsc2hs" \
+               "${WORKDIR}/usr/bin/runghc-${GHC_PV}" \
+               "${WORKDIR}/usr/$(get_libdir)/${GHC_P}/package.conf.d/"*
+
+       # this one we will use to regenerate cache
+       # so it should point to current tree location
+       relocate_path "/usr" "${WORKDIR}/usr" "$gp_back"
+
+       if use prefix; then
+               # and insert LD_LIBRARY_PATH entry to EPREFIX dir tree
+               # TODO: add the same for darwin's CHOST and it's DYLD_
+               local new_ldpath='LD_LIBRARY_PATH="'${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir)'${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"\nexport LD_LIBRARY_PATH'
+               sed -i -e '2i'"$new_ldpath" \
+                       "${WORKDIR}/usr/bin/ghc-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/ghci-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/ghc-pkg-${GHC_PV}" \
+                       "${WORKDIR}/usr/bin/hsc2hs" \
+                       "${WORKDIR}/usr/bin/runghc-${GHC_PV}" \
+                       "$gp_back" \
+                       "${WORKDIR}/usr/bin/hsc2hs" \
+                       || die "Adding LD_LIBRARY_PATH for wrappers failed"
+       fi
+
+       # regenerate the binary package cache
+       "$gp_back" recache || die "failed to update cache after relocation"
+       rm "$gp_back"
+}
+
+pkg_setup() {
+       [[ ${MERGE_TYPE} == binary ]] && return
+
+       if use ghcbootstrap; then
+               ewarn "You requested ghc bootstrapping, this is usually only used"
+               ewarn "by Gentoo developers to make binary .tbz2 packages."
+
+               [[ -z $(type -P ghc) ]] && \
+                       die "Could not find a ghc to bootstrap with."
+       else
+               if ! yet_binary; then
+                       eerror "Please try emerging with USE=ghcbootstrap and report build"
+                       eerror "sucess or failure to the haskell team (haskell@gentoo.org)"
+                       die "No binary available for '${ARCH}' arch yet, USE=ghcbootstrap"
+               fi
+       fi
+}
+
+src_unpack() {
+       # Create the ${S} dir if we're using the binary version
+       use binary && mkdir "${S}"
+
+       # the Solaris and Darwin binaries from ghc (maeder) need to be
+       # unpacked separately, so prevent them from being unpacked
+       local ONLYA=${A}
+       case ${CHOST} in
+               *-darwin* | *-solaris*)  ONLYA=${GHC_P}-src.tar.bz2  ;;
+       esac
+       unpack ${ONLYA}
+
+       if [[ -d "${S}"/libraries/dph ]]; then
+               # Sometimes dph libs get accidentally shipped with ghc
+               # but they are not installed unless user requests it.
+               # We never install them.
+               elog "Removing 'libraries/dph'"
+               rm -rf "${S}"/libraries/dph
+       fi
+}
+
+src_prepare() {
+       ghc_setup_cflags
+
+       if ! use ghcbootstrap && [[ ${CHOST} != *-darwin* && ${CHOST} != *-solaris* ]]; then
+               # Modify the wrapper script from the binary tarball to use GHC_PERSISTENT_FLAGS.
+               # See bug #313635.
+               sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_PERSISTENT_FLAGS}|" \
+                       "${WORKDIR}/usr/bin/ghc-${GHC_PV}"
+
+               # allow hardened users use vanilla binary to bootstrap ghc
+               # ghci uses mmap with rwx protection at it implements dynamic
+               # linking on it's own (bug #299709)
+               pax-mark -m "${WORKDIR}/usr/$(get_libdir)/${GHC_P}/bin/ghc"
+       fi
+
+       if use binary; then
+               if use prefix; then
+                       relocate_ghc "${EPREFIX}"
+               fi
+
+               # Move unpacked files to the expected place
+               mv "${WORKDIR}/usr" "${S}"
+       else
+               if ! use ghcbootstrap; then
+                       case ${CHOST} in
+                               *-darwin* | *-solaris*)
+                               # UPDATE ME for ghc-7
+                               mkdir "${WORKDIR}"/ghc-bin-installer || die
+                               pushd "${WORKDIR}"/ghc-bin-installer > /dev/null || die
+                               use sparc-solaris && unpack ghc-6.10.4-sparc-sun-solaris2.tar.bz2
+                               use x86-solaris && unpack ghc-7.0.3-i386-unknown-solaris2.tar.bz2
+                               use x86-macos && unpack ghc-7.4.1-i386-apple-darwin.tar.bz2
+                               use x64-macos && unpack ghc-7.4.1-x86_64-apple-darwin.tar.bz2
+                               popd > /dev/null
+
+                               pushd "${WORKDIR}"/ghc-bin-installer/ghc-[67].?*.? > /dev/null || die
+                               # fix the binaries so they run, on Solaris we need an
+                               # LD_LIBRARY_PATH which has our prefix libdirs, on
+                               # Darwin we need to replace the frameworks with our libs
+                               # from the prefix fix before installation, because some
+                               # of the tools are actually used during configure/make
+                               if [[ ${CHOST} == *-solaris* ]] ; then
+                                       export LD_LIBRARY_PATH="${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir):${LD_LIBRARY_PATH}"
+                               elif [[ ${CHOST} == *-darwin* ]] ; then
+                                       local readline_framework=GNUreadline.framework/GNUreadline
+                                       local gmp_framework=/opt/local/lib/libgmp.10.dylib
+                                       local ncurses_file=/opt/local/lib/libncurses.5.dylib
+                                       for binary in $(scanmacho -BRE MH_EXECUTE -F '%F' .) ; do
+                                               install_name_tool -change \
+                                                       ${readline_framework} \
+                                                       "${EPREFIX}"/lib/libreadline.dylib \
+                                                       ${binary} || die
+                                               install_name_tool -change \
+                                                       ${gmp_framework} \
+                                                       "${EPREFIX}"/usr/lib/libgmp.dylib \
+                                                       ${binary} || die
+                                               install_name_tool -change \
+                                                       ${ncurses_file} \
+                                                       "${EPREFIX}"/usr/lib/libncurses.dylib \
+                                                       ${binary} || die
+                                       done
+                                       # we don't do frameworks!
+                                       sed -i \
+                                               -e 's/\(frameworks = \)\["GMP"\]/\1[]/g' \
+                                               -e 's/\(extraLibraries = \)\["m"\]/\1["m","gmp"]/g' \
+                                               rts/package.conf.in || die
+                               fi
+
+                               # it is autoconf, but we really don't want to give it too
+                               # much arguments, in fact we do the make in-place anyway
+                               ./configure --prefix="${WORKDIR}"/usr || die
+                               make install || die
+                               popd > /dev/null
+                               ;;
+                               *)
+                               relocate_ghc "${WORKDIR}"
+                               ;;
+                       esac
+               fi
+
+               sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_PERSISTENT_FLAGS}|" \
+                       "${S}/ghc/ghc.wrapper"
+
+               cd "${S}" # otherwise epatch will break
+
+               epatch "${FILESDIR}"/${PN}-7.0.4-CHOST-prefix.patch
+
+               epatch "${FILESDIR}"/${PN}-7.8.2-cgen-constify.patch
+               epatch "${FILESDIR}"/${PN}-7.8.3-prim-lm.patch
+               epatch "${FILESDIR}"/${PN}-7.10.1-rc3-ghc-7.10-bootstrap.patch
+               epatch "${FILESDIR}"/${PN}-7.10.1-T10590-dequeue.patch
+               # Since ${S}/packages does not include base, etc. add them to gen_contents_index
+               sed -e 's@\(for REPO in .*\)@\1 base integer-gmp integer-gmp2 integer-simple template-haskell@' \
+                       -i libraries/gen_contents_index || die
+
+               if use prefix; then
+                       # Make configure find docbook-xsl-stylesheets from Prefix
+                       sed -e '/^FP_DIR_DOCBOOK_XSL/s:\[.*\]:['"${EPREFIX}"'/usr/share/sgml/docbook/xsl-stylesheets/]:' \
+                               -i utils/haddock/doc/configure.ac || die
+               fi
+
+               bump_libs
+
+               # as we have changed the build system
+               eautoreconf
+       fi
+}
+
+src_configure() {
+       if ! use binary; then
+               # initialize build.mk
+               echo '# Gentoo changes' > mk/build.mk
+
+               # Put docs into the right place, ie /usr/share/doc/ghc-${GHC_PV}
+               echo "docdir = ${EPREFIX}/usr/share/doc/${P}" >> mk/build.mk
+               echo "htmldir = ${EPREFIX}/usr/share/doc/${P}" >> mk/build.mk
+
+               # We also need to use the GHC_FLAGS flags when building ghc itself
+               echo "SRC_HC_OPTS+=${HCFLAGS} ${GHC_FLAGS}" >> mk/build.mk
+               echo "SRC_CC_OPTS+=${CFLAGS}" >> mk/build.mk
+               echo "SRC_LD_OPTS+=${LDFLAGS}" >> mk/build.mk
+
+               # We can't depend on haddock except when bootstrapping when we
+               # must build docs and include them into the binary .tbz2 package
+               # app-text/dblatex is not in portage, can not build PDF or PS
+               echo "BUILD_DOCBOOK_PDF  = NO"  >> mk/build.mk
+               echo "BUILD_DOCBOOK_PS   = NO"  >> mk/build.mk
+               if use doc; then
+                       echo "BUILD_DOCBOOK_HTML = YES" >> mk/build.mk
+               else
+                       echo "BUILD_DOCBOOK_HTML = NO" >> mk/build.mk
+               fi
+
+               # this controls presence on 'xhtml' and 'haddock' in final install
+               echo "HADDOCK_DOCS       = YES" >> mk/build.mk
+
+               # allows overriding build flavours for libraries:
+               # v   - vanilla (static libs)
+               # p   - profiled
+               # dyn - shared libraries
+               # example: GHC_LIBRARY_WAYS="v dyn"
+               if [[ -n ${GHC_LIBRARY_WAYS} ]]; then
+                       echo "GhcLibWays=${GHC_LIBRARY_WAYS}" >> mk/build.mk
+               fi
+
+               # Get ghc from the unpacked binary .tbz2
+               # except when bootstrapping we just pick ghc up off the path
+               if ! use ghcbootstrap; then
+                       export PATH="${WORKDIR}/usr/bin:${PATH}"
+               fi
+
+               if use gmp; then
+                       echo "INTEGER_LIBRARY=integer-gmp2" >> mk/build.mk
+               else
+                       echo "INTEGER_LIBRARY=integer-simple" >> mk/build.mk
+               fi
+
+               # don't strip anything. Very useful when stage2 SIGSEGVs on you
+               echo "STRIP_CMD = :" >> mk/build.mk
+
+               local econf_args=()
+
+               # GHC embeds 'gcc' it was built by and uses it later.
+               # Don't allow things like ccache or versioned binary slip.
+               # We use stable thing across gcc upgrades.
+               is_crosscompile || econf_args+=(--with-gcc=${CHOST}-gcc)
+
+               if use ghcmakebinary; then
+                       # When building booting libary we are trying to
+                       # bundle or restrict most of external depends
+                       # with unstable ABI:
+                       #  - embed libffi (default GHC behaviour)
+                       #  - disable ncurses support for ghci (via haskeline)
+                       #    https://bugs.gentoo.org/557478
+                       echo "libraries/haskeline_CONFIGURE_OPTS += --flag=-terminfo" >> mk/build.mk
+               else
+                       econf_args+=(--with-system-libffi)
+                       econf_args+=(--with-ffi-includes=$(pkg-config libffi --cflags-only-I | sed -e 's@^-I@@'))
+               fi
+
+               elog "Final mk/build.mk:"
+               cat mk/build.mk || die
+
+               econf ${econf_args[@]} --enable-bootstrap-with-devel-snapshot
+
+               if [[ ${PV} == *9999* ]]; then
+                       GHC_PV="$(grep 'S\[\"PACKAGE_VERSION\"\]' config.status | sed -e 's@^.*=\"\(.*\)\"@\1@')"
+                       GHC_P=${PN}-${GHC_PV}
+               fi
+               GHC_TPF="$(grep 'S\[\"TargetPlatformFull\"\]' config.status | sed -e 's@^.*=\"\(.*\)\"@\1@')"
+       fi # ! use binary
+}
+
+src_compile() {
+       if ! use binary; then
+               # 1. build compiler binary first
+               emake ghc/stage2/build/tmp/ghc-stage2
+               # 2. pax-mark (bug #516430)
+               pax-mark -m ghc/stage2/build/tmp/ghc-stage2
+               # 3. and then all the rest
+               emake all
+       fi # ! use binary
+}
+
+src_install() {
+       if use binary; then
+               use prefix && mkdir -p "${ED}"
+               mv "${S}/usr" "${ED}"
+       else
+
+               emake -j1 install DESTDIR="${D}"
+               dodoc "distrib/README" "ANNOUNCE" "LICENSE" "VERSION"
+
+               # rename ghc-shipped files to avoid collision
+               # of external packages. Motivating example:
+               #  user had installed:
+               #      dev-lang/ghc-7.8.4-r0 (with transformers-0.3.0.0)
+               #      dev-haskell/transformers-0.4.2.0
+               #  then user tried to update to
+               #      dev-lang/ghc-7.8.4-r1 (with transformers-0.4.2.0)
+               #  this will lead to single .conf file collision.
+               local shipped_conf renamed_conf
+               local package_confdir="${ED}/usr/$(get_libdir)/${GHC_P}/package.conf.d"
+               for shipped_conf in "${package_confdir}"/*.conf; do
+                       # rename 'pkg-ver-id.conf' to 'pkg-ver-id-gentoo-${PF}.conf'
+                       renamed_conf=${shipped_conf%.conf}-gentoo-${PF}.conf
+                       mv "${shipped_conf}" "${renamed_conf}" || die
+               done
+
+               # remove link, but leave 'haddock-${GHC_P}'
+               rm -f "${ED}"/usr/bin/haddock
+
+               if [[ ! -f "${S}/VERSION" ]]; then
+                       echo "${GHC_PV}" > "${S}/VERSION" \
+                               || die "Could not create file ${S}/VERSION"
+               fi
+               newbashcomp "${FILESDIR}"/ghc-bash-completion ghc-pkg
+               newbashcomp utils/completion/ghc.bash         ghc
+       fi
+
+       # path to the package.cache
+       local package_confdir="${ED}/usr/$(get_libdir)/${GHC_P}/package.conf.d"
+       PKGCACHE="${package_confdir}"/package.cache
+       # copy the package.conf.d, including timestamp, save it so we can help
+       # users that have a broken package.conf.d
+       cp -pR "${package_confdir}"{,.initial} || die "failed to backup intial package.conf.d"
+
+       # copy the package.conf, including timestamp, save it so we later can put it
+       # back before uninstalling, or when upgrading.
+       cp -p "${PKGCACHE}"{,.shipped} \
+               || die "failed to copy package.conf.d/package.cache"
+}
+
+pkg_preinst() {
+       # have we got an earlier version of ghc installed?
+       if has_version "<${CATEGORY}/${PF}"; then
+               haskell_updater_warn="1"
+       fi
+}
+
+pkg_postinst() {
+       ghc-reregister
+
+       # path to the package.cache
+       PKGCACHE="${EROOT}/usr/$(get_libdir)/${GHC_P}/package.conf.d/package.cache"
+
+       # give the cache a new timestamp, it must be as recent as
+       # the package.conf.d directory.
+       touch "${PKGCACHE}"
+
+       if [[ "${haskell_updater_warn}" == "1" ]]; then
+               ewarn
+               ewarn "\e[1;31m************************************************************************\e[0m"
+               ewarn
+               ewarn "You have just upgraded from an older version of GHC."
+               ewarn "You may have to run"
+               ewarn "      'haskell-updater'"
+               ewarn "to rebuild all ghc-based Haskell libraries."
+               ewarn
+               ewarn "\e[1;31m************************************************************************\e[0m"
+               ewarn
+       fi
+}
+
+pkg_prerm() {
+       PKGCACHE="${EROOT}/usr/$(get_libdir)/${GHC_P}/package.conf.d/package.cache"
+       rm -rf "${PKGCACHE}"
+
+       cp -p "${PKGCACHE}"{.shipped,}
+}
+
+pkg_postrm() {
+       ghc-package_pkg_postrm
+}