# Copyright 1999-2004 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.15 2005/09/13 12:51:30 kosmikus Exp $ # # Author: Andres Loeh <kosmikus@gentoo.org> # # This eclass helps with the Glasgow Haskell Compiler's package # configuration utility. inherit versionator # promote /opt/ghc/bin to a better position in the search path PATH="/usr/bin:/opt/ghc/bin:${PATH}" # for later configuration using environment variables/ # returns the name of the ghc executable ghc-getghc() { echo "ghc" } # returns the name of the ghc-pkg executable ghc-getghcpkg() { echo "ghc-pkg" } # returns the name of the ghc-pkg binary (ghc-pkg # itself usually is a shell script, and we have to # bypass the script under certain circumstances); # for Cabal, we add an empty global package config file, # because for some reason the global package file # must be specified ghc-getghcpkgbin() { if ghc-cabal; then echo '[]' > "${T}/empty.conf" echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" else echo "$(ghc-libdir)/ghc-pkg.bin" fi } # returns the version of ghc _GHC_VERSION_CACHE="" ghc-version() { if [[ -z "${_GHC_VERSION_CACHE}" ]]; then _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" fi echo "${_GHC_VERSION_CACHE}" } # this function can be used to determine if ghc itself # uses the Cabal package format; it has nothing to do # with the Cabal libraries ... ghc uses the Cabal package # format since version 6.4 ghc-cabal() { version_is_at_least "6.4" "$(ghc-version)" } # return the best version of the Cabal library that is available ghc-bestcabalversion() { local cabalpackage local cabalversion if ghc-cabal; then # Try if ghc-pkg can determine the latest version. # If not, use portage. cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)" if [[ $? -eq 0 ]]; then cabalversion="${cabalpackage#Cabal-}" else cabalpackage="$(best_version cabal)" cabalversion="${cabalpackage#dev-haskell/cabal-}" cabalversion="${cabalversion%-r*}" cabalversion="${cabalversion%_pre*}" fi echo "Cabal-${cabalversion}" else # older ghc's don't support package versioning echo Cabal fi } # check if a standalone Cabal version is available for the # currently used ghc; takes minimal version of Cabal as # an optional argument ghc-sanecabal() { local f local version if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi for f in $(ghc-confdir)/cabal-*; do [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return done return 1 } # returns the library directory _GHC_LIBDIR_CACHE="" ghc-libdir() { if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)" fi echo "${_GHC_LIBDIR_CACHE}" } # returns the (Gentoo) library configuration directory ghc-confdir() { echo "$(ghc-libdir)/gentoo" } # returns the name of the local (package-specific) # package configuration file ghc-localpkgconf() { echo "${PF}.conf" } # make a ghci foo.o file from a libfoo.a file ghc-makeghcilib() { local outfile outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" } # tests if a ghc package exists ghc-package-exists() { $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1 } # creates a local (package-specific) package # configuration file; the arguments should be # uninstalled package description files, each # containing a single package description; if # no arguments are given, the resulting file is # empty ghc-setup-pkg() { local localpkgconf localpkgconf="${S}/$(ghc-localpkgconf)" echo '[]' > "${localpkgconf}" for pkg in $*; do $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ < "${pkg}" || die "failed to register ${pkg}" done } # fixes the library and import directories path # of the package configuration file ghc-fixlibpath() { sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" if [[ -n "$2" ]]; then sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" fi } # moves the local (package-specific) package configuration # file to its final destination ghc-install-pkg() { mkdir -p "${D}/$(ghc-confdir)" cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" } # registers all packages in the local (package-specific) # package configuration file ghc-register-pkg() { local localpkgconf localpkgconf="$(ghc-confdir)/$1" if [[ -f "${localpkgconf}" ]]; then for pkg in $(ghc-listpkg "${localpkgconf}"); do ebegin "Registering ${pkg} " $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ | $(ghc-getghcpkg) -u --force > /dev/null eend $? done fi } # re-adds all available .conf files to the global # package conf file, to be used on a ghc reinstallation ghc-reregister() { einfo "Re-adding packages (may cause several harmless warnings) ..." if [ -d "$(ghc-confdir)" ]; then pushd "$(ghc-confdir)" > /dev/null for conf in *.conf; do # einfo "Processing ${conf} ..." ghc-register-pkg "${conf}" done popd > /dev/null fi } # unregisters a package configuration file # protected are all packages that are still contained in # another package configuration file ghc-unregister-pkg() { local localpkgconf local i local pkg local protected localpkgconf="$(ghc-confdir)/$1" for i in $(ghc-confdir)/*.conf; do [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})" done # protected now contains the packages that cannot be unregistered yet if [[ -f "${localpkgconf}" ]]; then for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do if $(ghc-elem "${pkg}" "${protected}"); then einfo "Package ${pkg} is protected." elif ! ghc-package-exists "${pkg}"; then : # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)." else ebegin "Unregistering ${pkg} " $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null eend $? fi done fi } # help-function: reverse a list ghc-reverse() { local result local i for i in $1; do result="${i} ${result}" done echo "${result}" } # help-function: element-check ghc-elem() { local i for i in $2; do [[ "$1" == "${i}" ]] && return 0 done return 1 } # show the packages in a package configuration file ghc-listpkg() { local ghcpkgcall local i for i in $*; do if ghc-cabal; then echo $($(ghc-getghcpkg) list -f "${i}") \ | sed \ -e "s|^.*${i}:\([^:]*\).*$|\1|" \ -e "s|/.*$||" \ -e "s|,| |g" -e "s|[()]||g" else echo $($(ghc-getghcpkgbin) -l -f "${i}") \ | cut -f2 -d':' \ | sed 's:,: :g' fi done } # exported function: registers the package-specific package # configuration file ghc-package_pkg_postinst() { ghc-register-pkg "$(ghc-localpkgconf)" } # exported function: unregisters the package-specific package # configuration file; a package contained therein is unregistered # only if it the same package is not also contained in another # package configuration file ... ghc-package_pkg_prerm() { ghc-unregister-pkg "$(ghc-localpkgconf)" } EXPORT_FUNCTIONS pkg_postinst pkg_prerm