# Copyright 1999-2015 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Id$ # @ECLASS: ghc-package.eclass # @MAINTAINER: # "Gentoo's Haskell Language team" <haskell@gentoo.org> # @AUTHOR: # Original Author: Andres Loeh <kosmikus@gentoo.org> # @BLURB: This eclass helps with the Glasgow Haskell Compiler's package configuration utility. # @DESCRIPTION: # Helper eclass to handle ghc installation/upgrade/deinstallation process. inherit versionator # @FUNCTION: ghc-getghc # @DESCRIPTION: # returns the name of the ghc executable ghc-getghc() { type -P ghc } # @FUNCTION: ghc-getghcpkg # @DESCRIPTION: # Internal function determines returns the name of the ghc-pkg executable ghc-getghcpkg() { type -P ghc-pkg } # @FUNCTION: ghc-getghcpkgbin # @DESCRIPTION: # 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 "7.9.20141222" "$(ghc-version)"; then # ghc-7.10 stopped supporting single-file database local empty_db="${T}/empty.conf.d" ghc_pkg="$(ghc-libdir)/bin/ghc-pkg" if [[ ! -d ${empty_db} ]]; then "${ghc_pkg}" init "${empty_db}" || die "Failed to initialize empty global db" fi echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${empty_db}" elif version_is_at_least "7.7.20121101" "$(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 # was moved to bin/ subtree by: # http://www.haskell.org/pipermail/cvs-ghc/2012-September/076546.html echo '[]' > "${T}/empty.conf" echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${T}/empty.conf" elif version_is_at_least "7.5.20120516" "$(ghc-version)"; then echo '[]' > "${T}/empty.conf" echo "$(ghc-libdir)/ghc-pkg" "--global-package-db=${T}/empty.conf" else echo '[]' > "${T}/empty.conf" echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf" fi } # @FUNCTION: ghc-version # @DESCRIPTION: # returns upstream version of ghc # as reported by '--numeric-version' # Examples: "7.10.2", "7.9.20141222" _GHC_VERSION_CACHE="" ghc-version() { if [[ -z "${_GHC_VERSION_CACHE}" ]]; then _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)" fi echo "${_GHC_VERSION_CACHE}" } # @FUNCTION: ghc-pm-version # @DESCRIPTION: # returns package manager(PM) version of ghc # as reported by '$(best_version)' # Examples: "PM:7.10.2", "PM:7.10.2_rc1", "PM:7.8.4-r4" _GHC_PM_VERSION_CACHE="" ghc-pm-version() { local pm_ghc_p if [[ -z "${_GHC_PM_VERSION_CACHE}" ]]; then pm_ghc_p=$(best_version dev-lang/ghc) _GHC_PM_VERSION_CACHE="PM:${pm_ghc_p#dev-lang/ghc-}" fi echo "${_GHC_PM_VERSION_CACHE}" } # @FUNCTION: ghc-cabal-version # @DESCRIPTION: # return version of the Cabal library bundled with ghc ghc-cabal-version() { if version_is_at_least "7.9.20141222" "$(ghc-version)"; then # outputs in format: 'version: 1.18.1.5' set -- `$(ghc-getghcpkg) --package-db=$(ghc-libdir)/package.conf.d.initial field Cabal version` echo "$2" else local cabal_package=`echo "$(ghc-libdir)"/Cabal-*` # /path/to/ghc/Cabal-${VER} -> ${VER} echo "${cabal_package/*Cabal-/}" fi } # @FUNCTION: ghc-sanecabal # @DESCRIPTION: # 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 } # @FUNCTION: ghc-is-dynamic # @DESCRIPTION: # checks if ghc is built against dynamic libraries # binaries linked against GHC library (and using plugin loading) # have to be linked the same way: # https://ghc.haskell.org/trac/ghc/ticket/10301 ghc-is-dynamic() { $(ghc-getghc) --info | grep "GHC Dynamic" | grep -q "YES" } # @FUNCTION: ghc-supports-shared-libraries # @DESCRIPTION: # checks if ghc is built with support for building # shared libraries (aka '-dynamic' option) ghc-supports-shared-libraries() { $(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn" } # @FUNCTION: ghc-supports-threaded-runtime # @DESCRIPTION: # checks if ghc is built with support for threaded # runtime (aka '-threaded' option) ghc-supports-threaded-runtime() { $(ghc-getghc) --info | grep "RTS ways" | grep -q "thr" } # @FUNCTION: ghc-supports-smp # @DESCRIPTION: # checks if ghc is built with support for multiple cores runtime ghc-supports-smp() { $(ghc-getghc) --info | grep "Support SMP" | grep -q "YES" } # @FUNCTION: ghc-supports-interpreter # @DESCRIPTION: # checks if ghc has interpreter mode (aka GHCi) # It usually means that ghc supports for template haskell. ghc-supports-interpreter() { $(ghc-getghc) --info | grep "Have interpreter" | grep -q "YES" } # @FUNCTION: ghc-supports-parallel-make # @DESCRIPTION: # checks if ghc has support for '--make -j' mode # The option was introduced in ghc-7.8-rc1. ghc-supports-parallel-make() { $(ghc-getghc) --info | grep "Support parallel --make" | grep -q "YES" } # @FUNCTION: ghc-extractportageversion # @DESCRIPTION: # extract the version of a portage-installed package ghc-extractportageversion() { local pkg local version pkg="$(best_version $1)" version="${pkg#$1-}" version="${version%-r*}" version="${version%_pre*}" echo "${version}" } # @FUNCTION: ghc-libdir # @DESCRIPTION: # 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}" } # @FUNCTION: ghc-confdir # @DESCRIPTION: # returns the (Gentoo) library configuration directory, we # store here a hint for 'haskell-updater' about packages # installed for old ghc versions and current ones. ghc-confdir() { echo "$(ghc-libdir)/gentoo" } # @FUNCTION: ghc-package-db # @DESCRIPTION: # returns the global package database directory ghc-package-db() { echo "$(ghc-libdir)/package.conf.d" } # @FUNCTION: ghc-localpkgconfd # @DESCRIPTION: # returns the name of the local (package-specific) # package configuration file ghc-localpkgconfd() { echo "${PF}.conf.d" } # @FUNCTION: ghc-package-exists # @DESCRIPTION: # tests if a ghc package exists ghc-package-exists() { $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1 } # @FUNCTION: check-for-collisions # @DESCRIPTION: # makes sure no packages # have the same version as initial package setup check-for-collisions() { local localpkgconf=$1 local checked_pkg local initial_pkg_db="$(ghc-libdir)/package.conf.d.initial" for checked_pkg in `$(ghc-getghcpkgbin) -f "${localpkgconf}" list --simple-output` do # should return empty output local collided=`$(ghc-getghcpkgbin) -f ${initial_pkg_db} list --simple-output "${checked_pkg}"` if [[ -n ${collided} ]]; then eerror "Cabal package '${checked_pkg}' is shipped with '$(ghc-pm-version)' ('$(ghc-version)')." eerror "Ebuild author forgot an entry in CABAL_CORE_LIB_GHC_PV='${CABAL_CORE_LIB_GHC_PV}'." eerror "Found in ${initial_pkg_db}." die fi done } # @FUNCTION: ghc-install-pkg # @DESCRIPTION: # moves the local (package-specific) package configuration # file to its final destination ghc-install-pkg() { local pkg_config_file=$1 local localpkgconf="${T}/$(ghc-localpkgconfd)" local pkg_path pkg pkg_db="${D}/$(ghc-package-db)" hint_db="${D}/$(ghc-confdir)" $(ghc-getghcpkgbin) init "${localpkgconf}" || die "Failed to initialize empty local db" $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \ < "${pkg_config_file}" || die "failed to register ${pkg}" check-for-collisions "${localpkgconf}" mkdir -p "${pkg_db}" || die for pkg_path in "${localpkgconf}"/*.conf; do pkg=$(basename "${pkg_path}") cp "${pkg_path}" "${pkg_db}/${pkg}" || die done mkdir -p "${hint_db}" || die cp "${pkg_config_file}" "${hint_db}/${PF}.conf" || die chmod 0644 "${hint_db}/${PF}.conf" || die } # @FUNCTION: ghc-recache-db # @DESCRIPTION: # updates 'package.cache' binary cacne for registered '*.conf' # packages ghc-recache-db() { einfo "Recaching GHC package DB" $(ghc-getghcpkg) recache } # @FUNCTION: ghc-register-pkg # @DESCRIPTION: # registers all packages in the local (package-specific) # package configuration file ghc-register-pkg() { ghc-recache-db } # @FUNCTION: ghc-reregister # @DESCRIPTION: # re-adds all available .conf files to the global # package conf file, to be used on a ghc reinstallation ghc-reregister() { ghc-recache-db } # @FUNCTION: ghc-unregister-pkg # @DESCRIPTION: # unregisters a package configuration file ghc-unregister-pkg() { ghc-recache-db } # @FUNCTION: ghc-pkgdeps # @DESCRIPTION: # exported function: loads a package dependency in a form # cabal_package version ghc-pkgdeps() { echo $($(ghc-getghcpkg) describe "${1}") \ | sed \ -e '/depends/,/^.*:/ !d' \ -e 's/\(.*\)-\(.*\)-\(.*\)/\1 \2/' \ -e 's/^.*://g' } # @FUNCTION: ghc-package_pkg_postinst # @DESCRIPTION: # updates package.cache after package install ghc-package_pkg_postinst() { ghc-recache-db } # @FUNCTION: ghc-package_pkg_prerm # @DESCRIPTION: # updates package.cache after package deinstall ghc-package_pkg_prerm() { ewarn "ghc-package.eclass: 'ghc-package_pkg_prerm()' is a noop" ewarn "ghc-package.eclass: consider 'haskell-cabal_pkg_postrm()' instead" } # @FUNCTION: ghc-package_pkg_postrm # @DESCRIPTION: # updates package.cache after package deinstall ghc-package_pkg_postrm() { ghc-recache-db }