/[gentoo-x86]/eclass/ghc-package.eclass
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Revision 1.1.1.1 Revision 1.13
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 1.1.1.1 2005/11/30 09:59:38 chriswhite Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.13 2005/07/06 20:23:20 agriffis Exp $
4# 4#
5# Author: Andres Loeh <kosmikus@gentoo.org> 5# Author: Andres Loeh <kosmikus@gentoo.org>
6# 6#
7# This eclass helps with the Glasgow Haskell Compiler's package 7# This eclass helps with the Glasgow Haskell Compiler's package
8# configuration utility. 8# configuration utility.
9 9
10inherit versionator 10inherit versionator
11
11 12
12# promote /opt/ghc/bin to a better position in the search path 13# promote /opt/ghc/bin to a better position in the search path
13PATH="/usr/bin:/opt/ghc/bin:${PATH}" 14PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 15
15# for later configuration using environment variables/ 16# for later configuration using environment variables/
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);
29# for Cabal, we add an empty global package config file, 30# for Cabal, we add the global package config file,
30# because for some reason the global package file 31# because for some reason that's required
31# must be specified
32ghc-getghcpkgbin() { 32ghc-getghcpkgbin() {
33 if ghc-cabal; then 33 if ghc-cabal; then
34 echo '[]' > "${T}/empty.conf"
35 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" 34 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf"
36 else 35 else
37 echo "$(ghc-libdir)/ghc-pkg.bin" 36 echo $(ghc-libdir)/"ghc-pkg.bin"
38 fi 37 fi
39} 38}
40 39
41# returns the version of ghc 40# returns the version of ghc
42_GHC_VERSION_CACHE="" 41_GHC_VERSION_CACHE=""
45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" 44 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
46 fi 45 fi
47 echo "${_GHC_VERSION_CACHE}" 46 echo "${_GHC_VERSION_CACHE}"
48} 47}
49 48
50# this function can be used to determine if ghc itself 49# returns true for ghc >= 6.4
51# uses the Cabal package format; it has nothing to do
52# with the Cabal libraries ... ghc uses the Cabal package
53# format since version 6.4
54ghc-cabal() { 50ghc-cabal() {
55 version_is_at_least "6.4" "$(ghc-version)" 51 version_is_at_least "6.4" "$(ghc-version)"
56}
57
58# return the best version of the Cabal library that is available
59ghc-bestcabalversion() {
60 local cabalpackage
61 local cabalversion
62 if ghc-cabal; then
63 # Try if ghc-pkg can determine the latest version.
64 # If not, use portage.
65 cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)"
66 if [[ $? -eq 0 ]]; then
67 cabalversion="${cabalpackage#Cabal-}"
68 else
69 cabalpackage="$(best_version cabal)"
70 cabalversion="${cabalpackage#dev-haskell/cabal-}"
71 cabalversion="${cabalversion%-r*}"
72 cabalversion="${cabalversion%_pre*}"
73 fi
74 echo "Cabal-${cabalversion}"
75 else
76 # older ghc's don't support package versioning
77 echo Cabal
78 fi
79}
80
81# check if a standalone Cabal version is available for the
82# currently used ghc; takes minimal version of Cabal as
83# an optional argument
84ghc-sanecabal() {
85 local f
86 local version
87 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
88 for f in $(ghc-confdir)/cabal-*; do
89 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
90 done
91 return 1
92} 52}
93 53
94# returns the library directory 54# returns the library directory
95_GHC_LIBDIR_CACHE="" 55_GHC_LIBDIR_CACHE=""
96ghc-libdir() { 56ghc-libdir() {
100 echo "${_GHC_LIBDIR_CACHE}" 60 echo "${_GHC_LIBDIR_CACHE}"
101} 61}
102 62
103# returns the (Gentoo) library configuration directory 63# returns the (Gentoo) library configuration directory
104ghc-confdir() { 64ghc-confdir() {
105 echo "$(ghc-libdir)/gentoo" 65 echo $(ghc-libdir)/gentoo
106} 66}
107 67
108# returns the name of the local (package-specific) 68# returns the name of the local (package-specific)
109# package configuration file 69# package configuration file
110ghc-localpkgconf() { 70ghc-localpkgconf() {
113 73
114# make a ghci foo.o file from a libfoo.a file 74# make a ghci foo.o file from a libfoo.a file
115ghc-makeghcilib() { 75ghc-makeghcilib() {
116 local outfile 76 local outfile
117 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 77 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
118 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" 78 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1
119}
120
121# tests if a ghc package exists
122ghc-package-exists() {
123 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
124} 79}
125 80
126# creates a local (package-specific) package 81# creates a local (package-specific) package
127# configuration file; the arguments should be 82# configuration file; the arguments should be
128# uninstalled package description files, each 83# uninstalled package description files, each
130# no arguments are given, the resulting file is 85# no arguments are given, the resulting file is
131# empty 86# empty
132ghc-setup-pkg() { 87ghc-setup-pkg() {
133 local localpkgconf 88 local localpkgconf
134 localpkgconf="${S}/$(ghc-localpkgconf)" 89 localpkgconf="${S}/$(ghc-localpkgconf)"
135 echo '[]' > "${localpkgconf}" 90 echo '[]' > ${localpkgconf}
136 for pkg in $*; do 91 for pkg in $*; do
137 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ 92 $(ghc-getghcpkgbin) -f ${localpkgconf} -u --force \
138 < "${pkg}" || die "failed to register ${pkg}" 93 < ${pkg} || die "failed to register ${pkg}"
139 done 94 done
140} 95}
141 96
142# fixes the library and import directories path 97# fixes the library and import directories path
143# of the package configuration file 98# of the package configuration file
144ghc-fixlibpath() { 99ghc-fixlibpath() {
145 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" 100 sed -i "s|$1|$(ghc-libdir)|g" ${S}/$(ghc-localpkgconf)
146 if [[ -n "$2" ]]; then 101 if [[ -n "$2" ]]; then
147 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" 102 sed -i "s|$2|$(ghc-libdir)/imports|g" ${S}/$(ghc-localpkgconf)
148 fi 103 fi
149} 104}
150 105
151# moves the local (package-specific) package configuration 106# moves the local (package-specific) package configuration
152# file to its final destination 107# file to its final destination
153ghc-install-pkg() { 108ghc-install-pkg() {
154 mkdir -p "${D}/$(ghc-confdir)" 109 mkdir -p ${D}/$(ghc-confdir)
155 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ 110 cat ${S}/$(ghc-localpkgconf) | sed "s|${D}||g" \
156 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 111 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf)
157} 112}
158 113
159# registers all packages in the local (package-specific) 114# registers all packages in the local (package-specific)
160# package configuration file 115# package configuration file
161ghc-register-pkg() { 116ghc-register-pkg() {
162 local localpkgconf 117 local localpkgconf
163 localpkgconf="$(ghc-confdir)/$1" 118 localpkgconf="$(ghc-confdir)/$1"
164 if [[ -f "${localpkgconf}" ]]; then 119 if [[ -f ${localpkgconf} ]]; then
165 for pkg in $(ghc-listpkg "${localpkgconf}"); do 120 for pkg in $(ghc-listpkg ${localpkgconf}); do
166 ebegin "Registering ${pkg} " 121 ebegin "Registering ${pkg} "
167 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ 122 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \
168 | $(ghc-getghcpkg) -u --force > /dev/null 123 | $(ghc-getghcpkg) -u --force > /dev/null
169 eend $? 124 eend $?
170 done 125 done
171 fi 126 fi
172} 127}
173 128
174# re-adds all available .conf files to the global 129# re-adds all available .conf files to the global
175# package conf file, to be used on a ghc reinstallation 130# package conf file, to be used on a ghc reinstallation
176ghc-reregister() { 131ghc-reregister() {
177 einfo "Re-adding packages (may cause several harmless warnings) ..." 132 einfo "Re-adding packages ..."
133 einfo "(This may cause several warnings, but they should be harmless.)"
178 if [ -d "$(ghc-confdir)" ]; then 134 if [ -d "$(ghc-confdir)" ]; then
179 pushd "$(ghc-confdir)" > /dev/null 135 pushd $(ghc-confdir) > /dev/null
180 for conf in *.conf; do 136 for conf in *.conf; do
181# einfo "Processing ${conf} ..." 137 einfo "Processing ${conf} ..."
182 ghc-register-pkg "${conf}" 138 ghc-register-pkg ${conf}
183 done 139 done
184 popd > /dev/null 140 popd > /dev/null
185 fi 141 fi
186} 142}
187 143
188# unregisters a package configuration file 144# unregisters ...
189# protected are all packages that are still contained in
190# another package configuration file
191ghc-unregister-pkg() { 145ghc-unregister-pkg() {
192 local localpkgconf 146 local localpkgconf
193 local i
194 local pkg
195 local protected
196 localpkgconf="$(ghc-confdir)/$1" 147 localpkgconf="$(ghc-confdir)/$1"
197
198 for i in $(ghc-confdir)/*.conf; do
199 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
200 done
201 # protected now contains the packages that cannot be unregistered yet
202
203 if [[ -f "${localpkgconf}" ]]; then 148 if [[ -f ${localpkgconf} ]]; then
204 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 149 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
205 if $(ghc-elem "${pkg}" "${protected}"); then
206 einfo "Package ${pkg} is protected."
207 elif ! ghc-package-exists "${pkg}"; then
208 :
209 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
210 else
211 ebegin "Unregistering ${pkg} " 150 ebegin "Unregistering ${pkg} "
212 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null 151 $(ghc-getghcpkg) -r ${pkg} --force > /dev/null
213 eend $? 152 eend $?
214 fi
215 done 153 done
216 fi 154 fi
217} 155}
218 156
219# help-function: reverse a list 157# help-function: reverse a list
220ghc-reverse() { 158ghc-reverse() {
221 local result 159 local result
222 local i
223 for i in $1; do 160 for i in $1; do
224 result="${i} ${result}" 161 result="${i} ${result}"
225 done 162 done
226 echo "${result}" 163 echo ${result}
227}
228
229# help-function: element-check
230ghc-elem() {
231 local i
232 for i in $2; do
233 [[ "$1" == "${i}" ]] && return 0
234 done
235 return 1
236} 164}
237 165
238# show the packages in a package configuration file 166# show the packages in a package configuration file
239ghc-listpkg() { 167ghc-listpkg() {
240 local ghcpkgcall 168 local ghcpkgcall
241 local i
242 for i in $*; do
243 if ghc-cabal; then 169 if ghc-cabal; then
244 echo $($(ghc-getghcpkg) list -f "${i}") \ 170 echo $($(ghc-getghcpkg) list -f $1) \
245 | sed \ 171 | sed \
246 -e "s|^.*${i}:\([^:]*\).*$|\1|" \ 172 -e "s|^.*${f}:\([^:]*\).*$|\1|" \
247 -e "s|/.*$||" \ 173 -e "s|/.*$||" \
248 -e "s|,| |g" -e "s|[()]||g" 174 -e "s|,| |g" -e "s|[()]||g"
249 else 175 else
250 echo $($(ghc-getghcpkgbin) -l -f "${i}") \ 176 echo $($(ghc-getghcpkgbin) -l -f $1) \
251 | cut -f2 -d':' \ 177 | cut -f2 -d':' \
252 | sed 's:,: :g' 178 | sed 's:,: :g'
253 fi 179 fi
254 done
255} 180}
256 181
257# exported function: registers the package-specific package 182# exported function: registers the package-specific package
258# configuration file 183# configuration file
259ghc-package_pkg_postinst() { 184ghc-package_pkg_postinst() {
260 ghc-register-pkg "$(ghc-localpkgconf)" 185 ghc-register-pkg $(ghc-localpkgconf)
261} 186}
262 187
263# exported function: unregisters the package-specific package 188# exported function: unregisters the package-specific
264# configuration file; a package contained therein is unregistered 189# package configuration file, under the condition that
265# only if it the same package is not also contained in another 190# after removal, no other instances of the package will
266# package configuration file ... 191# be left (necessary check because ghc packages are not
192# versioned)
267ghc-package_pkg_prerm() { 193ghc-package_pkg_prerm() {
194 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
268 ghc-unregister-pkg "$(ghc-localpkgconf)" 195 || ghc-unregister-pkg $(ghc-localpkgconf)
269} 196}
270 197
271EXPORT_FUNCTIONS pkg_postinst pkg_prerm 198EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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