# 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="$arch_binaries amd64? ( http://code.haskell.org/~slyfox/ghc-amd64/ghc-bin-${PV}-amd64.tbz2 )" arch_binaries="$arch_binaries ia64? ( http://code.haskell.org/~slyfox/ghc-ia64/ghc-bin-${PV}-ia64.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="$arch_binaries x86? ( http://code.haskell.org/~slyfox/ghc-x86/ghc-bin-${PV}-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=7.8.3.20141119 # 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}/${GHC_P}-src.tar.bz2 )" S="${WORKDIR}"/${GHC_P} [[ -n $arch_binaries ]] && SRC_URI+=" !ghcbootstrap? ( $arch_binaries )" SRC_URI+=" https://dev.gentoo.org/~slyfox/distfiles/${P}-ia64-CLOSUREs-regenerated.patch.gz" LICENSE="BSD" SLOT="0/${PV}" KEYWORDS="alpha amd64 ia64 ppc ppc64 sparc x86 ~amd64-linux ~x86-linux" IUSE="doc ghcbootstrap ghcmakebinary +gmp" IUSE+=" binary" IUSE+=" elibc_glibc" # system stuff RDEPEND=" >=dev-lang/perl-5.6.1 >=dev-libs/gmp-5:= sys-libs/ncurses:=[unicode] !ghcmakebinary? ( virtual/libffi:= ) !kernel_Darwin? ( >=sys-devel/gcc-2.95.3 ) kernel_linux? ( >=sys-devel/binutils-2.17 ) kernel_SunOS? ( >=sys-devel/binutils-2.17 ) " # force dependency on >=gmp-5, even if >=gmp-4.1 would be enough. this is due to # that we want the binaries to use the latest versioun available, and not to be # built against gmp-4 # similar for glibc. we have bootstrapped binaries against glibc-2.17 DEPEND="${RDEPEND} ghcbootstrap? ( 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+=" ${ghcflag}" ;; esac done } ghc_setup_cflags() { if is_crosscompile; then export CFLAGS=${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}"/${PN}-7.8.1_rc1-libbfd.patch epatch "${FILESDIR}"/${PN}-7.8.2-cgen-constify.patch epatch "${FILESDIR}"/${PN}-7.8.3-prim-lm.patch # bug 518734 epatch "${FILESDIR}"/${PN}-7.6.3-preserve-inplace-xattr.patch # fix threaded runtime on ia64 epatch "${FILESDIR}"/${PN}-7.8.4-ia64-CLOSUREs.patch epatch "${WORKDIR}"/${PN}-7.8.4-ia64-CLOSUREs-regenerated.patch # upstream backports epatch "${FILESDIR}"/${PN}-7.8.3-linker-warn.patch epatch "${FILESDIR}"/${PN}-7.8.3-pic-sparc.patch epatch "${FILESDIR}"/${PN}-7.8.3-ppc32-fPIC.patch epatch "${FILESDIR}"/${PN}-7.8.4-gold.patch if use prefix; then # Make configure find docbook-xsl-stylesheets from Prefix sed -e '/^FP_DIR_DOCBOOK_XSL/s:\[.*\]:['"${EPREFIX}"'/usr/share/sgml/docbook/xsl-stylesheets/]:' \ -i utils/haddock/doc/configure.ac || die fi # as we have changed the build system eautoreconf fi } src_configure() { if ! use binary; then # initialize build.mk echo '# Gentoo changes' > mk/build.mk # Put docs into the right place, ie /usr/share/doc/ghc-${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+=${GHC_FLAGS}" >> mk/build.mk echo "SRC_CC_OPTS+=${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 if use ghcbootstrap && use doc; then echo "BUILD_DOCBOOK_PDF = NO" >> mk/build.mk echo "BUILD_DOCBOOK_PS = NO" >> mk/build.mk echo "BUILD_DOCBOOK_HTML = YES" >> mk/build.mk echo "HADDOCK_DOCS = YES" >> mk/build.mk else echo "BUILD_DOCBOOK_PDF = NO" >> mk/build.mk echo "BUILD_DOCBOOK_PS = NO" >> mk/build.mk echo "BUILD_DOCBOOK_HTML = NO" >> mk/build.mk echo "HADDOCK_DOCS = NO" >> mk/build.mk fi # 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-gmp" >> 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=${CHOST}-gcc) if ! use ghcmakebinary; then econf_args+=(--with-system-libffi) econf_args+=(--with-ffi-includes=$(pkg-config libffi --cflags-only-I | sed -e 's@^-I@@')) fi 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" "${ED}" # Remove the docs if not requested if ! use doc; then rm -rf "${ED}/usr/share/doc/${P}/*/" \ "${ED}/usr/share/doc/${P}/*.html" \ || die "could not remove docs (P vs PF revision mismatch?)" fi else # We only build docs if we were bootstrapping, otherwise # we copy them out of the unpacked binary .tbz2 if use doc && ! use ghcbootstrap; then mkdir -p "${ED}/usr/share/doc" mv "${WORKDIR}/usr/share/doc/${P}" "${ED}/usr/share/doc" \ || die "failed to copy docs" else dodoc "${S}/distrib/README" "${S}/ANNOUNCE" "${S}/LICENSE" "${S}/VERSION" fi emake -j1 install DESTDIR="${D}" # 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 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 --upgrade'" ewarn "to rebuild all ghc-based Haskell libraries." ewarn ewarn "\e[1;31m************************************************************************\e[0m" ewarn fi } pkg_prerm() { # Be very careful here... Call order when upgrading is (according to PMS): # * src_install for new package # * pkg_preinst for new package # * pkg_postinst for new package # * pkg_prerm for the package being replaced # * pkg_postrm for the package being replaced # so you'll actually be touching the new packages files, not the one you # uninstall, due to that or installation directory ${GHC_P} will be the same for # both packages. # Call order for reinstalling is (according to PMS): # * src_install # * pkg_preinst # * pkg_prerm for the package being replaced # * pkg_postrm for the package being replaced # * pkg_postinst # Overwrite the modified package.cache with a copy of the # original one, so that it will be removed during uninstall. PKGCACHE="${EROOT}/usr/$(get_libdir)/${GHC_P}/package.conf.d/package.cache" rm -rf "${PKGCACHE}" cp -p "${PKGCACHE}"{.shipped,} } pkg_postrm() { ghc-package_pkg_postrm }