/[gentoo-x86]/eclass/ghc-package.eclass
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Revision 1.1.1.1 Revision 1.10
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 1.10 2005/05/08 14:49:25 dcoutts 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
12ECLASS="ghc-package"
13INHERITED="${INHERITED} ${ECLASS}"
14
12# promote /opt/ghc/bin to a better position in the search path 15# promote /opt/ghc/bin to a better position in the search path
13PATH="/usr/bin:/opt/ghc/bin:${PATH}" 16PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 17
15# for later configuration using environment variables/ 18# for later configuration using environment variables/
16# returns the name of the ghc executable 19# returns the name of the ghc executable
24} 27}
25 28
26# returns the name of the ghc-pkg binary (ghc-pkg 29# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 30# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances); 31# bypass the script under certain circumstances);
29# for Cabal, we add an empty global package config file, 32# for Cabal, we add the global package config file,
30# because for some reason the global package file 33# because for some reason that's required
31# must be specified
32ghc-getghcpkgbin() { 34ghc-getghcpkgbin() {
33 if ghc-cabal; then 35 if ghc-cabal; then
34 echo '[]' > "${T}/empty.conf"
35 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" 36 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf"
36 else 37 else
37 echo "$(ghc-libdir)/ghc-pkg.bin" 38 echo $(ghc-libdir)/"ghc-pkg.bin"
38 fi 39 fi
39} 40}
40 41
41# returns the version of ghc 42# returns the version of ghc
42_GHC_VERSION_CACHE="" 43_GHC_VERSION_CACHE=""
45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" 46 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
46 fi 47 fi
47 echo "${_GHC_VERSION_CACHE}" 48 echo "${_GHC_VERSION_CACHE}"
48} 49}
49 50
50# this function can be used to determine if ghc itself 51# returns true for ghc >= 6.4
51# uses the Cabal package format; it has nothing to do
52# with the Cabal libraries ... ghc uses the Cabal package
53# format since version 6.4
54ghc-cabal() { 52ghc-cabal() {
55 version_is_at_least "6.4" "$(ghc-version)" 53 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} 54}
93 55
94# returns the library directory 56# returns the library directory
95_GHC_LIBDIR_CACHE="" 57_GHC_LIBDIR_CACHE=""
96ghc-libdir() { 58ghc-libdir() {
100 echo "${_GHC_LIBDIR_CACHE}" 62 echo "${_GHC_LIBDIR_CACHE}"
101} 63}
102 64
103# returns the (Gentoo) library configuration directory 65# returns the (Gentoo) library configuration directory
104ghc-confdir() { 66ghc-confdir() {
105 echo "$(ghc-libdir)/gentoo" 67 echo $(ghc-libdir)/gentoo
106} 68}
107 69
108# returns the name of the local (package-specific) 70# returns the name of the local (package-specific)
109# package configuration file 71# package configuration file
110ghc-localpkgconf() { 72ghc-localpkgconf() {
113 75
114# make a ghci foo.o file from a libfoo.a file 76# make a ghci foo.o file from a libfoo.a file
115ghc-makeghcilib() { 77ghc-makeghcilib() {
116 local outfile 78 local outfile
117 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 79 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
118 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" 80 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1
119}
120
121# tests if a ghc package exists
122ghc-package-exists() {
123 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
124} 81}
125 82
126# creates a local (package-specific) package 83# creates a local (package-specific) package
127# configuration file; the arguments should be 84# configuration file; the arguments should be
128# uninstalled package description files, each 85# uninstalled package description files, each
130# no arguments are given, the resulting file is 87# no arguments are given, the resulting file is
131# empty 88# empty
132ghc-setup-pkg() { 89ghc-setup-pkg() {
133 local localpkgconf 90 local localpkgconf
134 localpkgconf="${S}/$(ghc-localpkgconf)" 91 localpkgconf="${S}/$(ghc-localpkgconf)"
135 echo '[]' > "${localpkgconf}" 92 echo '[]' > ${localpkgconf}
136 for pkg in $*; do 93 for pkg in $*; do
137 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ 94 $(ghc-getghcpkgbin) -f ${localpkgconf} -u --force \
138 < "${pkg}" || die "failed to register ${pkg}" 95 < ${pkg}
139 done 96 done
140} 97}
141 98
142# fixes the library and import directories path 99# fixes the library and import directories path
143# of the package configuration file 100# of the package configuration file
144ghc-fixlibpath() { 101ghc-fixlibpath() {
145 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" 102 sed -i "s|$1|$(ghc-libdir)|g" ${S}/$(ghc-localpkgconf)
146 if [[ -n "$2" ]]; then 103 if [[ -n "$2" ]]; then
147 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" 104 sed -i "s|$2|$(ghc-libdir)/imports|g" ${S}/$(ghc-localpkgconf)
148 fi 105 fi
149} 106}
150 107
151# moves the local (package-specific) package configuration 108# moves the local (package-specific) package configuration
152# file to its final destination 109# file to its final destination
153ghc-install-pkg() { 110ghc-install-pkg() {
154 mkdir -p "${D}/$(ghc-confdir)" 111 mkdir -p ${D}/$(ghc-confdir)
155 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ 112 cat ${S}/$(ghc-localpkgconf) | sed "s|${D}||g" \
156 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 113 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf)
157} 114}
158 115
159# registers all packages in the local (package-specific) 116# registers all packages in the local (package-specific)
160# package configuration file 117# package configuration file
161ghc-register-pkg() { 118ghc-register-pkg() {
162 local localpkgconf 119 local localpkgconf
163 localpkgconf="$(ghc-confdir)/$1" 120 localpkgconf="$(ghc-confdir)/$1"
164 if [[ -f "${localpkgconf}" ]]; then 121 if [[ -f ${localpkgconf} ]]; then
165 for pkg in $(ghc-listpkg "${localpkgconf}"); do 122 for pkg in $(ghc-listpkg ${localpkgconf}); do
166 ebegin "Registering ${pkg} " 123 ebegin "Registering ${pkg} "
167 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ 124 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \
168 | $(ghc-getghcpkg) -u --force > /dev/null 125 | $(ghc-getghcpkg) -u --force > /dev/null
169 eend $? 126 eend $?
170 done 127 done
171 fi 128 fi
172} 129}
173 130
174# re-adds all available .conf files to the global 131# re-adds all available .conf files to the global
175# package conf file, to be used on a ghc reinstallation 132# package conf file, to be used on a ghc reinstallation
176ghc-reregister() { 133ghc-reregister() {
177 einfo "Re-adding packages (may cause several harmless warnings) ..." 134 einfo "Re-adding packages ..."
135 einfo "(This may cause several warnings, but they should be harmless.)"
178 if [ -d "$(ghc-confdir)" ]; then 136 if [ -d "$(ghc-confdir)" ]; then
179 pushd "$(ghc-confdir)" > /dev/null 137 pushd $(ghc-confdir) > /dev/null
180 for conf in *.conf; do 138 for conf in *.conf; do
181# einfo "Processing ${conf} ..." 139 einfo "Processing ${conf} ..."
182 ghc-register-pkg "${conf}" 140 ghc-register-pkg ${conf}
183 done 141 done
184 popd > /dev/null 142 popd > /dev/null
185 fi 143 fi
186} 144}
187 145
188# unregisters a package configuration file 146# unregisters ...
189# protected are all packages that are still contained in
190# another package configuration file
191ghc-unregister-pkg() { 147ghc-unregister-pkg() {
192 local localpkgconf 148 local localpkgconf
193 local i
194 local pkg
195 local protected
196 localpkgconf="$(ghc-confdir)/$1" 149 localpkgconf="$(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 150 if [[ -f ${localpkgconf} ]]; then
204 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 151 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} " 152 ebegin "Unregistering ${pkg} "
212 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null 153 $(ghc-getghcpkg) -r ${pkg} --force > /dev/null
213 eend $? 154 eend $?
214 fi
215 done 155 done
216 fi 156 fi
217} 157}
218 158
219# help-function: reverse a list 159# help-function: reverse a list
220ghc-reverse() { 160ghc-reverse() {
221 local result 161 local result
222 local i
223 for i in $1; do 162 for i in $1; do
224 result="${i} ${result}" 163 result="${i} ${result}"
225 done 164 done
226 echo "${result}" 165 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} 166}
237 167
238# show the packages in a package configuration file 168# show the packages in a package configuration file
239ghc-listpkg() { 169ghc-listpkg() {
240 local ghcpkgcall 170 local ghcpkgcall
241 local i
242 for i in $*; do
243 if ghc-cabal; then 171 if ghc-cabal; then
244 echo $($(ghc-getghcpkg) list -f "${i}") \ 172 echo $($(ghc-getghcpkg) list -f $1) \
245 | sed \ 173 | sed \
246 -e "s|^.*${i}:\([^:]*\).*$|\1|" \ 174 -e "s|^.*${f}:\([^:]*\).*$|\1|" \
247 -e "s|/.*$||" \ 175 -e "s|/.*$||" \
248 -e "s|,| |g" -e "s|[()]||g" 176 -e "s|,| |g" -e "s|[()]||g"
249 else 177 else
250 echo $($(ghc-getghcpkgbin) -l -f "${i}") \ 178 echo $($(ghc-getghcpkgbin) -l -f $1) \
251 | cut -f2 -d':' \ 179 | cut -f2 -d':' \
252 | sed 's:,: :g' 180 | sed 's:,: :g'
253 fi 181 fi
254 done
255} 182}
256 183
257# exported function: registers the package-specific package 184# exported function: registers the package-specific package
258# configuration file 185# configuration file
259ghc-package_pkg_postinst() { 186ghc-package_pkg_postinst() {
260 ghc-register-pkg "$(ghc-localpkgconf)" 187 ghc-register-pkg $(ghc-localpkgconf)
261} 188}
262 189
263# exported function: unregisters the package-specific package 190# exported function: unregisters the package-specific
264# configuration file; a package contained therein is unregistered 191# package configuration file, under the condition that
265# only if it the same package is not also contained in another 192# after removal, no other instances of the package will
266# package configuration file ... 193# be left (necessary check because ghc packages are not
194# versioned)
267ghc-package_pkg_prerm() { 195ghc-package_pkg_prerm() {
196 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
268 ghc-unregister-pkg "$(ghc-localpkgconf)" 197 || ghc-unregister-pkg $(ghc-localpkgconf)
269} 198}
270 199
271EXPORT_FUNCTIONS pkg_postinst pkg_prerm 200EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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