| # 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 1.27 2009/03/23 20:06:19 kolmodin Exp $ |
| # |
| # Author: Andres Loeh <kosmikus@gentoo.org> |
| # Maintained by: Haskell herd <haskell@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:${PATH}" |
| |
| # for later configuration using environment variables/ |
| # returns the name of the ghc executable |
| ghc-getghc() { |
| type -P ghc |
| } |
| |
| # returns the name of the ghc-pkg executable |
| ghc-getghcpkg() { |
| type -P ghc-pkg |
| } |
| |
| # returns the name of the ghc-pkg binary (ghc-pkg |
| # itself usually is a shell script, and we have to |
| # bypass the script under certain circumstances); |
| # for Cabal, we add an empty global package config file, |
| # because for some reason the global package file |
| # must be specified |
| ghc-getghcpkgbin() { |
| if version_is_at_least "6.10" "$(ghc-version)"; then |
| # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs |
| # the wrapper script with the static flags |
| echo '[]' > "${T}/empty.conf" |
| echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf" |
| elif ghc-cabal; then |
| echo '[]' > "${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) --numeric-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 cabalversion |
| if ghc-cabal; then |
| # We ask portage, not ghc, so that we only pick up |
| # portage-installed cabal versions. |
| cabalversion="$(ghc-extractportageversion dev-haskell/cabal)" |
| echo "Cabal-${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 |
| } |
| |
| # checks if ghc and ghc-bin are installed in the same version |
| # (if they're both installed); if this is not the case, we |
| # unfortunately cannot trust portage's dependency resolution |
| ghc-saneghc() { |
| local ghcversion |
| local ghcbinversion |
| if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then |
| return |
| fi |
| if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then |
| ghcversion="$(ghc-extractportageversion dev-lang/ghc)" |
| ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)" |
| if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then |
| return 1 |
| fi |
| fi |
| return |
| } |
| |
| # extract the version of a portage-installed package |
| ghc-extractportageversion() { |
| local pkg |
| local version |
| pkg="$(best_version $1)" |
| version="${pkg#$1-}" |
| version="${version%-r*}" |
| version="${version%_pre*}" |
| echo "${version}" |
| } |
| |
| # 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 "$1" |
| } |
| |
| # tests if a ghc package exists |
| ghc-package-exists() { |
| local describe_flag |
| if version_is_at_least "6.4" "$(ghc-version)"; then |
| describe_flag="describe" |
| else |
| describe_flag="--show-package" |
| fi |
| |
| $(ghc-getghcpkg) "${describe_flag}" "$1" > /dev/null 2>&1 |
| } |
| |
| # creates a local (package-specific) package |
| # configuration file; the arguments should be |
| # uninstalled package description files, each |
| # containing a single package description; if |
| # no arguments are given, the resulting file is |
| # empty |
| ghc-setup-pkg() { |
| local localpkgconf |
| localpkgconf="${S}/$(ghc-localpkgconf)" |
| echo '[]' > "${localpkgconf}" |
| local update_flag |
| if version_is_at_least "6.4" "$(ghc-version)"; then |
| update_flag="update -" |
| else |
| update_flag="--update-package" |
| fi |
| for pkg in $*; do |
| $(ghc-getghcpkgbin) -f "${localpkgconf}" ${update_flag} --force \ |
| < "${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)/$1" |
| local update_flag |
| local describe_flag |
| if version_is_at_least "6.4" "$(ghc-version)"; then |
| update_flag="update -" |
| describe_flag="describe" |
| else |
| update_flag="--update-package" |
| describe_flag="--show-package" |
| fi |
| if [[ -f "${localpkgconf}" ]]; then |
| for pkg in $(ghc-listpkg "${localpkgconf}"); do |
| ebegin "Registering ${pkg} " |
| $(ghc-getghcpkgbin) -f "${localpkgconf}" "${describe_flag}" "${pkg}" \ |
| | $(ghc-getghcpkg) ${update_flag} --force > /dev/null |
| eend $? |
| done |
| fi |
| } |
| |
| # re-adds all available .conf files to the global |
| # package conf file, to be used on a ghc reinstallation |
| ghc-reregister() { |
| einfo "Re-adding packages (may cause several harmless warnings) ..." |
| PATH="/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)" |
| if [ -d "${CONFDIR}" ]; then |
| pushd "${CONFDIR}" > /dev/null |
| for conf in *.conf; do |
| PATH="/usr/bin:${PATH}" ghc-register-pkg "${conf}" |
| done |
| popd > /dev/null |
| fi |
| } |
| |
| # unregisters a package configuration file |
| # protected are all packages that are still contained in |
| # another package configuration file |
| ghc-unregister-pkg() { |
| local localpkgconf |
| local i |
| local pkg |
| local protected |
| local unregister_flag |
| localpkgconf="$(ghc-confdir)/$1" |
| |
| if version_is_at_least "6.4" "$(ghc-version)"; then |
| unregister_flag="unregister" |
| else |
| unregister_flag="--remove-package" |
| fi |
| |
| 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} " |
| $(ghc-getghcpkg) "${unregister_flag}" "${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 "${i}") \ |
| | cut -f2 -d':' \ |
| | sed 's:,: :g' |
| fi |
| done |
| } |
| |
| # exported function: check if we have a consistent ghc installation |
| ghc-package_pkg_setup() { |
| if ! ghc-saneghc; then |
| eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin" |
| eerror "installed. Portage currently cannot work correctly with this setup." |
| eerror "There are several possibilities to work around this problem:" |
| eerror "(1) Up/downgrade ghc-bin to the same version as ghc." |
| eerror "(2) Unmerge ghc-bin." |
| eerror "(3) Unmerge ghc." |
| eerror "You probably want option 1 or 2." |
| die "Inconsistent versions of ghc and ghc-bin." |
| fi |
| } |
| |
| # exported function: registers the package-specific package |
| # configuration file |
| ghc-package_pkg_postinst() { |
| ghc-register-pkg "$(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_setup pkg_postinst pkg_prerm |