/[gentoo-x86]/eclass/ghc-package.eclass
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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2004 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.4 2004/11/04 14:16:14 kosmikus Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.17 2006/06/15 11:27:38 dcoutts Exp $
4# 4#
5# Author: Andres Loeh <kosmikus@gentoo.org> 5# Author: Andres Loeh <kosmikus@gentoo.org>
6# Maintained by: Haskell herd <haskell@gentoo.org>
6# 7#
7# This eclass helps with the Glasgow Haskell Compiler's package 8# This eclass helps with the Glasgow Haskell Compiler's package
8# configuration utility. 9# configuration utility.
9 10
10ECLASS="ghc-package" 11inherit versionator
11INHERITED="$INHERITED $ECLASS"
12 12
13PATH="${PATH}:/opt/ghc/bin" 13# promote /opt/ghc/bin to a better position in the search path
14PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 15
15# for later configuration using environment variables/ 16# for later configuration using environment variables/
16# returns the name of the ghc executable 17# returns the name of the ghc executable
17ghc-getghc() { 18ghc-getghc() {
18 echo "ghc" 19 echo "ghc"
23 echo "ghc-pkg" 24 echo "ghc-pkg"
24} 25}
25 26
26# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances) 29# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file,
31# because for some reason the global package file
32# must be specified
29ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if ghc-cabal; then
35 echo '[]' > "${T}/empty.conf"
36 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
37 else
30 echo $(ghc-libdir)/"ghc-pkg.bin" 38 echo "$(ghc-libdir)/ghc-pkg.bin"
39 fi
31} 40}
32 41
33# returns the version of ghc 42# returns the version of ghc
43_GHC_VERSION_CACHE=""
34ghc-version() { 44ghc-version() {
35 $(ghc-getghc) --version | sed 's:^.*version ::' 45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 fi
48 echo "${_GHC_VERSION_CACHE}"
49}
50
51# this function can be used to determine if ghc itself
52# uses the Cabal package format; it has nothing to do
53# with the Cabal libraries ... ghc uses the Cabal package
54# format since version 6.4
55ghc-cabal() {
56 version_is_at_least "6.4" "$(ghc-version)"
57}
58
59# return the best version of the Cabal library that is available
60ghc-bestcabalversion() {
61 local cabalpackage
62 local cabalversion
63 if ghc-cabal; then
64 # Try if ghc-pkg can determine the latest version.
65 # If not, use portage.
66 cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)"
67 if [[ $? -eq 0 ]]; then
68 cabalversion="${cabalpackage#Cabal-}"
69 else
70 cabalpackage="$(best_version cabal)"
71 cabalversion="${cabalpackage#dev-haskell/cabal-}"
72 cabalversion="${cabalversion%-r*}"
73 cabalversion="${cabalversion%_pre*}"
74 fi
75 echo "Cabal-${cabalversion}"
76 else
77 # older ghc's don't support package versioning
78 echo Cabal
79 fi
80}
81
82# check if a standalone Cabal version is available for the
83# currently used ghc; takes minimal version of Cabal as
84# an optional argument
85ghc-sanecabal() {
86 local f
87 local version
88 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
89 for f in $(ghc-confdir)/cabal-*; do
90 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
91 done
92 return 1
36} 93}
37 94
38# returns the library directory 95# returns the library directory
96_GHC_LIBDIR_CACHE=""
39ghc-libdir() { 97ghc-libdir() {
40 $(ghc-getghc) --print-libdir 98 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
99 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
100 fi
101 echo "${_GHC_LIBDIR_CACHE}"
41} 102}
42 103
43# returns the (Gentoo) library configuration directory 104# returns the (Gentoo) library configuration directory
44ghc-confdir() { 105ghc-confdir() {
45 echo $(ghc-libdir)/gentoo 106 echo "$(ghc-libdir)/gentoo"
46} 107}
47 108
48# returns the name of the local (package-specific) 109# returns the name of the local (package-specific)
49# package configuration file 110# package configuration file
50ghc-localpkgconf() { 111ghc-localpkgconf() {
53 114
54# make a ghci foo.o file from a libfoo.a file 115# make a ghci foo.o file from a libfoo.a file
55ghc-makeghcilib() { 116ghc-makeghcilib() {
56 local outfile 117 local outfile
57 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 118 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
58 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1 119 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
120}
121
122# tests if a ghc package exists
123ghc-package-exists() {
124 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
59} 125}
60 126
61# creates a local (package-specific) package 127# creates a local (package-specific) package
62# configuration file; the arguments should be 128# configuration file; the arguments should be
63# uninstalled package description files, each 129# uninstalled package description files, each
65# no arguments are given, the resulting file is 131# no arguments are given, the resulting file is
66# empty 132# empty
67ghc-setup-pkg() { 133ghc-setup-pkg() {
68 local localpkgconf 134 local localpkgconf
69 localpkgconf="${S}/$(ghc-localpkgconf)" 135 localpkgconf="${S}/$(ghc-localpkgconf)"
70 echo '[' > ${localpkgconf} 136 echo '[]' > "${localpkgconf}"
71 while [ -n "$1" ]; do 137 for pkg in $*; do
72 cat "$1" >> ${localpkgconf} 138 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
73 shift 139 < "${pkg}" || die "failed to register ${pkg}"
74 [ -n "$1" ] && echo ',' >> ${localpkgconf}
75 done 140 done
76 echo ']' >> ${localpkgconf} 141}
142
143# fixes the library and import directories path
144# of the package configuration file
145ghc-fixlibpath() {
146 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
147 if [[ -n "$2" ]]; then
148 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
149 fi
77} 150}
78 151
79# moves the local (package-specific) package configuration 152# moves the local (package-specific) package configuration
80# file to its final destination 153# file to its final destination
81ghc-install-pkg() { 154ghc-install-pkg() {
82 mkdir -p ${D}/$(ghc-confdir) 155 mkdir -p "${D}/$(ghc-confdir)"
83 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 156 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
84 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 157 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
85} 158}
86 159
87# registers all packages in the local (package-specific) 160# registers all packages in the local (package-specific)
88# package configuration file 161# package configuration file
89ghc-register-pkg() { 162ghc-register-pkg() {
90 local localpkgconf 163 local localpkgconf
91 localpkgconf="$(ghc-confdir)/$1" 164 localpkgconf="$(ghc-confdir)/$1"
165 if [[ -f "${localpkgconf}" ]]; then
92 for pkg in $(ghc-listpkg ${localpkgconf}); do 166 for pkg in $(ghc-listpkg "${localpkgconf}"); do
93 einfo "Registering ${pkg} ..." 167 ebegin "Registering ${pkg} "
94 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 168 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
95 | $(ghc-getghcpkg) -u --force 169 | $(ghc-getghcpkg) -u --force > /dev/null
170 eend $?
96 done 171 done
172 fi
97} 173}
98 174
99# re-adds all available .conf files to the global 175# re-adds all available .conf files to the global
100# package conf file, to be used on a ghc reinstallation 176# package conf file, to be used on a ghc reinstallation
101ghc-reregister() { 177ghc-reregister() {
102 einfo "Re-adding packages ..." 178 einfo "Re-adding packages (may cause several harmless warnings) ..."
103 ewarn "This may cause several warnings, but they should be harmless." 179 if [ -d "$(ghc-confdir)" ]; then
104 pushd $(ghc-confdir) 180 pushd "$(ghc-confdir)" > /dev/null
105 for conf in *.conf; do 181 for conf in *.conf; do
106 einfo "Processing ${conf} ..." 182# einfo "Processing ${conf} ..."
107 ghc-register-pkg ${conf} 183 ghc-register-pkg "${conf}"
108 done 184 done
109 popd 185 popd > /dev/null
186 fi
110} 187}
111 188
112# unregisters ... 189# unregisters a package configuration file
190# protected are all packages that are still contained in
191# another package configuration file
113ghc-unregister-pkg() { 192ghc-unregister-pkg() {
114 local localpkgconf 193 local localpkgconf
194 local i
195 local pkg
196 local protected
115 localpkgconf="$(ghc-confdir)/$1" 197 localpkgconf="$(ghc-confdir)/$1"
198
199 for i in $(ghc-confdir)/*.conf; do
200 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
201 done
202 # protected now contains the packages that cannot be unregistered yet
203
204 if [[ -f "${localpkgconf}" ]]; then
116 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 205 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
206 if $(ghc-elem "${pkg}" "${protected}"); then
207 einfo "Package ${pkg} is protected."
208 elif ! ghc-package-exists "${pkg}"; then
209 :
210 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
211 else
117 einfo "Unregistering ${pkg} ..." 212 ebegin "Unregistering ${pkg} "
118 $(ghc-getghcpkg) -r ${pkg} --force 213 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
214 eend $?
215 fi
119 done 216 done
217 fi
120} 218}
121 219
122# help-function: reverse a list 220# help-function: reverse a list
123ghc-reverse() { 221ghc-reverse() {
124 local result 222 local result
223 local i
125 for i in $1; do 224 for i in $1; do
126 result="${i} ${result}" 225 result="${i} ${result}"
127 done 226 done
128 echo ${result} 227 echo "${result}"
228}
229
230# help-function: element-check
231ghc-elem() {
232 local i
233 for i in $2; do
234 [[ "$1" == "${i}" ]] && return 0
235 done
236 return 1
129} 237}
130 238
131# show the packages in a package configuration file 239# show the packages in a package configuration file
132ghc-listpkg() { 240ghc-listpkg() {
241 local ghcpkgcall
242 local i
243 for i in $*; do
244 if ghc-cabal; then
245 echo $($(ghc-getghcpkg) list -f "${i}") \
246 | sed \
247 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
248 -e "s|/.*$||" \
249 -e "s|,| |g" -e "s|[()]||g"
250 else
133 [ -f $1 ] && echo $($(ghc-getghcpkgbin) -l -f $1) \ 251 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
134 | cut -f2 -d':' \ 252 | cut -f2 -d':' \
135 | sed 's:,: :g' 253 | sed 's:,: :g'
254 fi
255 done
136} 256}
137 257
138# exported function: registers the package-specific package 258# exported function: registers the package-specific package
139# configuration file 259# configuration file
140ghc-package_pkg_postinst() { 260ghc-package_pkg_postinst() {
141 ghc-register-pkg $(ghc-localpkgconf) 261 ghc-register-pkg "$(ghc-localpkgconf)"
142} 262}
143 263
144# exported function: unregisters the package-specific 264# exported function: unregisters the package-specific package
145# package configuration file, under the condition that 265# configuration file; a package contained therein is unregistered
146# after removal, no other instances of the package will 266# only if it the same package is not also contained in another
147# be left (necessary check because ghc packages are not 267# package configuration file ...
148# versioned)
149ghc-package_pkg_prerm() { 268ghc-package_pkg_prerm() {
150 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
151 || ghc-unregister-pkg $(ghc-localpkgconf) 269 ghc-unregister-pkg "$(ghc-localpkgconf)"
152} 270}
153 271
154EXPORT_FUNCTIONS pkg_postinst pkg_prerm 272EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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