| 1 |
# Copyright 1999-2004 Gentoo Foundation |
| 2 |
# Distributed under the terms of the GNU General Public License v2 |
| 3 |
# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.18 2006/08/02 19:49:03 dcoutts Exp $ |
| 4 |
# |
| 5 |
# Author: Andres Loeh <kosmikus@gentoo.org> |
| 6 |
# Maintained by: Haskell herd <haskell@gentoo.org> |
| 7 |
# |
| 8 |
# This eclass helps with the Glasgow Haskell Compiler's package |
| 9 |
# configuration utility. |
| 10 |
|
| 11 |
inherit versionator |
| 12 |
|
| 13 |
# promote /opt/ghc/bin to a better position in the search path |
| 14 |
PATH="/usr/bin:/opt/ghc/bin:${PATH}" |
| 15 |
|
| 16 |
# for later configuration using environment variables/ |
| 17 |
# returns the name of the ghc executable |
| 18 |
ghc-getghc() { |
| 19 |
echo "$(which ghc)" |
| 20 |
} |
| 21 |
|
| 22 |
# returns the name of the ghc-pkg executable |
| 23 |
ghc-getghcpkg() { |
| 24 |
echo "$(which ghc-pkg)" |
| 25 |
} |
| 26 |
|
| 27 |
# returns the name of the ghc-pkg binary (ghc-pkg |
| 28 |
# itself usually is a shell script, and we have to |
| 29 |
# bypass the script under certain circumstances); |
| 30 |
# for Cabal, we add an empty global package config file, |
| 31 |
# because for some reason the global package file |
| 32 |
# must be specified |
| 33 |
ghc-getghcpkgbin() { |
| 34 |
if ghc-cabal; then |
| 35 |
echo '[]' > "${T}/empty.conf" |
| 36 |
echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" |
| 37 |
else |
| 38 |
echo "$(ghc-libdir)/ghc-pkg.bin" |
| 39 |
fi |
| 40 |
} |
| 41 |
|
| 42 |
# returns the version of ghc |
| 43 |
_GHC_VERSION_CACHE="" |
| 44 |
ghc-version() { |
| 45 |
if [[ -z "${_GHC_VERSION_CACHE}" ]]; then |
| 46 |
_GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)" |
| 47 |
fi |
| 48 |
echo "${_GHC_VERSION_CACHE}" |
| 49 |
} |
| 50 |
|
| 51 |
# this function can be used to determine if ghc itself |
| 52 |
# uses the Cabal package format; it has nothing to do |
| 53 |
# with the Cabal libraries ... ghc uses the Cabal package |
| 54 |
# format since version 6.4 |
| 55 |
ghc-cabal() { |
| 56 |
version_is_at_least "6.4" "$(ghc-version)" |
| 57 |
} |
| 58 |
|
| 59 |
# return the best version of the Cabal library that is available |
| 60 |
ghc-bestcabalversion() { |
| 61 |
local cabalpackage |
| 62 |
local cabalversion |
| 63 |
if ghc-cabal; then |
| 64 |
# We ask portage, not ghc, so that we only pick up |
| 65 |
# portage-installed cabal versions. |
| 66 |
cabalpackage="$(best_version cabal)" |
| 67 |
cabalversion="${cabalpackage#dev-haskell/cabal-}" |
| 68 |
cabalversion="${cabalversion%-r*}" |
| 69 |
cabalversion="${cabalversion%_pre*}" |
| 70 |
echo "Cabal-${cabalversion}" |
| 71 |
else |
| 72 |
# older ghc's don't support package versioning |
| 73 |
echo Cabal |
| 74 |
fi |
| 75 |
} |
| 76 |
|
| 77 |
# check if a standalone Cabal version is available for the |
| 78 |
# currently used ghc; takes minimal version of Cabal as |
| 79 |
# an optional argument |
| 80 |
ghc-sanecabal() { |
| 81 |
local f |
| 82 |
local version |
| 83 |
if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi |
| 84 |
for f in $(ghc-confdir)/cabal-*; do |
| 85 |
[[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return |
| 86 |
done |
| 87 |
return 1 |
| 88 |
} |
| 89 |
|
| 90 |
# returns the library directory |
| 91 |
_GHC_LIBDIR_CACHE="" |
| 92 |
ghc-libdir() { |
| 93 |
if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then |
| 94 |
_GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)" |
| 95 |
fi |
| 96 |
echo "${_GHC_LIBDIR_CACHE}" |
| 97 |
} |
| 98 |
|
| 99 |
# returns the (Gentoo) library configuration directory |
| 100 |
ghc-confdir() { |
| 101 |
echo "$(ghc-libdir)/gentoo" |
| 102 |
} |
| 103 |
|
| 104 |
# returns the name of the local (package-specific) |
| 105 |
# package configuration file |
| 106 |
ghc-localpkgconf() { |
| 107 |
echo "${PF}.conf" |
| 108 |
} |
| 109 |
|
| 110 |
# make a ghci foo.o file from a libfoo.a file |
| 111 |
ghc-makeghcilib() { |
| 112 |
local outfile |
| 113 |
outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" |
| 114 |
ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" |
| 115 |
} |
| 116 |
|
| 117 |
# tests if a ghc package exists |
| 118 |
ghc-package-exists() { |
| 119 |
$(ghc-getghcpkg) -s "$1" > /dev/null 2>&1 |
| 120 |
} |
| 121 |
|
| 122 |
# creates a local (package-specific) package |
| 123 |
# configuration file; the arguments should be |
| 124 |
# uninstalled package description files, each |
| 125 |
# containing a single package description; if |
| 126 |
# no arguments are given, the resulting file is |
| 127 |
# empty |
| 128 |
ghc-setup-pkg() { |
| 129 |
local localpkgconf |
| 130 |
localpkgconf="${S}/$(ghc-localpkgconf)" |
| 131 |
echo '[]' > "${localpkgconf}" |
| 132 |
for pkg in $*; do |
| 133 |
$(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ |
| 134 |
< "${pkg}" || die "failed to register ${pkg}" |
| 135 |
done |
| 136 |
} |
| 137 |
|
| 138 |
# fixes the library and import directories path |
| 139 |
# of the package configuration file |
| 140 |
ghc-fixlibpath() { |
| 141 |
sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" |
| 142 |
if [[ -n "$2" ]]; then |
| 143 |
sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" |
| 144 |
fi |
| 145 |
} |
| 146 |
|
| 147 |
# moves the local (package-specific) package configuration |
| 148 |
# file to its final destination |
| 149 |
ghc-install-pkg() { |
| 150 |
mkdir -p "${D}/$(ghc-confdir)" |
| 151 |
cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ |
| 152 |
> "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" |
| 153 |
} |
| 154 |
|
| 155 |
# registers all packages in the local (package-specific) |
| 156 |
# package configuration file |
| 157 |
ghc-register-pkg() { |
| 158 |
local localpkgconf |
| 159 |
localpkgconf="$(ghc-confdir)/$1" |
| 160 |
if [[ -f "${localpkgconf}" ]]; then |
| 161 |
for pkg in $(ghc-listpkg "${localpkgconf}"); do |
| 162 |
ebegin "Registering ${pkg} " |
| 163 |
$(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ |
| 164 |
| $(ghc-getghcpkg) -u --force > /dev/null |
| 165 |
eend $? |
| 166 |
done |
| 167 |
fi |
| 168 |
} |
| 169 |
|
| 170 |
# re-adds all available .conf files to the global |
| 171 |
# package conf file, to be used on a ghc reinstallation |
| 172 |
ghc-reregister() { |
| 173 |
einfo "Re-adding packages (may cause several harmless warnings) ..." |
| 174 |
if [ -d "$(ghc-confdir)" ]; then |
| 175 |
pushd "$(ghc-confdir)" > /dev/null |
| 176 |
for conf in *.conf; do |
| 177 |
# einfo "Processing ${conf} ..." |
| 178 |
ghc-register-pkg "${conf}" |
| 179 |
done |
| 180 |
popd > /dev/null |
| 181 |
fi |
| 182 |
} |
| 183 |
|
| 184 |
# unregisters a package configuration file |
| 185 |
# protected are all packages that are still contained in |
| 186 |
# another package configuration file |
| 187 |
ghc-unregister-pkg() { |
| 188 |
local localpkgconf |
| 189 |
local i |
| 190 |
local pkg |
| 191 |
local protected |
| 192 |
localpkgconf="$(ghc-confdir)/$1" |
| 193 |
|
| 194 |
for i in $(ghc-confdir)/*.conf; do |
| 195 |
[[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})" |
| 196 |
done |
| 197 |
# protected now contains the packages that cannot be unregistered yet |
| 198 |
|
| 199 |
if [[ -f "${localpkgconf}" ]]; then |
| 200 |
for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do |
| 201 |
if $(ghc-elem "${pkg}" "${protected}"); then |
| 202 |
einfo "Package ${pkg} is protected." |
| 203 |
elif ! ghc-package-exists "${pkg}"; then |
| 204 |
: |
| 205 |
# einfo "Package ${pkg} is not installed for ghc-$(ghc-version)." |
| 206 |
else |
| 207 |
ebegin "Unregistering ${pkg} " |
| 208 |
$(ghc-getghcpkg) -r "${pkg}" --force > /dev/null |
| 209 |
eend $? |
| 210 |
fi |
| 211 |
done |
| 212 |
fi |
| 213 |
} |
| 214 |
|
| 215 |
# help-function: reverse a list |
| 216 |
ghc-reverse() { |
| 217 |
local result |
| 218 |
local i |
| 219 |
for i in $1; do |
| 220 |
result="${i} ${result}" |
| 221 |
done |
| 222 |
echo "${result}" |
| 223 |
} |
| 224 |
|
| 225 |
# help-function: element-check |
| 226 |
ghc-elem() { |
| 227 |
local i |
| 228 |
for i in $2; do |
| 229 |
[[ "$1" == "${i}" ]] && return 0 |
| 230 |
done |
| 231 |
return 1 |
| 232 |
} |
| 233 |
|
| 234 |
# show the packages in a package configuration file |
| 235 |
ghc-listpkg() { |
| 236 |
local ghcpkgcall |
| 237 |
local i |
| 238 |
for i in $*; do |
| 239 |
if ghc-cabal; then |
| 240 |
echo $($(ghc-getghcpkg) list -f "${i}") \ |
| 241 |
| sed \ |
| 242 |
-e "s|^.*${i}:\([^:]*\).*$|\1|" \ |
| 243 |
-e "s|/.*$||" \ |
| 244 |
-e "s|,| |g" -e "s|[()]||g" |
| 245 |
else |
| 246 |
echo $($(ghc-getghcpkgbin) -l -f "${i}") \ |
| 247 |
| cut -f2 -d':' \ |
| 248 |
| sed 's:,: :g' |
| 249 |
fi |
| 250 |
done |
| 251 |
} |
| 252 |
|
| 253 |
# exported function: registers the package-specific package |
| 254 |
# configuration file |
| 255 |
ghc-package_pkg_postinst() { |
| 256 |
ghc-register-pkg "$(ghc-localpkgconf)" |
| 257 |
} |
| 258 |
|
| 259 |
# exported function: unregisters the package-specific package |
| 260 |
# configuration file; a package contained therein is unregistered |
| 261 |
# only if it the same package is not also contained in another |
| 262 |
# package configuration file ... |
| 263 |
ghc-package_pkg_prerm() { |
| 264 |
ghc-unregister-pkg "$(ghc-localpkgconf)" |
| 265 |
} |
| 266 |
|
| 267 |
EXPORT_FUNCTIONS pkg_postinst pkg_prerm |
Parent Directory
| 
Revision Log