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# 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 1.14 2005/07/11 15:08:06 swegener 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 the global package config file,
# because for some reason that's required
ghc-getghcpkgbin() {
if ghc-cabal; then
echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.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 "${_GHC_VERSION_CACHE}"
}
# returns true for ghc >= 6.4
ghc-cabal() {
version_is_at_least "6.4" "$(ghc-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 $1
}
# creates a local (package-specific) package
# configuration file; the arguments should be
# uninstalled package description files, each
# containing a single package description; if
# no arguments are given, the resulting file is
# empty
ghc-setup-pkg() {
local localpkgconf
localpkgconf="${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 $?
done
fi
}
# re-adds all available .conf files to the global
# package conf file, to be used on a ghc reinstallation
ghc-reregister() {
einfo "Re-adding packages ..."
einfo "(This may cause several warnings, but they should be harmless.)"
if [ -d "$(ghc-confdir)" ]; then
pushd $(ghc-confdir) > /dev/null
for conf in *.conf; do
einfo "Processing ${conf} ..."
ghc-register-pkg ${conf}
done
popd > /dev/null
fi
}
# unregisters ...
ghc-unregister-pkg() {
local localpkgconf
localpkgconf="$(ghc-confdir)/$1"
if [[ -f ${localpkgconf} ]]; then
for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
ebegin "Unregistering ${pkg} "
$(ghc-getghcpkg) -r ${pkg} --force > /dev/null
eend $?
done
fi
}
# help-function: reverse a list
ghc-reverse() {
local result
for i in $1; do
result="${i} ${result}"
done
echo ${result}
}
# show the packages in a package configuration file
ghc-listpkg() {
local ghcpkgcall
if ghc-cabal; then
echo $($(ghc-getghcpkg) list -f $1) \
| sed \
-e "s|^.*${f}:\([^:]*\).*$|\1|" \
-e "s|/.*$||" \
-e "s|,| |g" -e "s|[()]||g"
else
echo $($(ghc-getghcpkgbin) -l -f $1) \
| cut -f2 -d':' \
| sed 's:,: :g'
fi
}
# exported function: registers the package-specific package
# configuration file
ghc-package_pkg_postinst() {
ghc-register-pkg $(ghc-localpkgconf)
}
# exported function: unregisters the package-specific
# package configuration file, under the condition that
# after removal, no other instances of the package will
# be left (necessary check because ghc packages are not
# versioned)
ghc-package_pkg_prerm() {
has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
|| ghc-unregister-pkg $(ghc-localpkgconf)
}
EXPORT_FUNCTIONS pkg_postinst pkg_prerm
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