/[gentoo-x86]/eclass/ghc-package.eclass
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Revision 1.1.1.1 Revision 1.6
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 1.6 2005/03/18 23:31:48 kosmikus 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# promote /opt/ghc/bin to a better position in the search path 12ECLASS="ghc-package"
13PATH="/usr/bin:/opt/ghc/bin:${PATH}" 13INHERITED="${INHERITED} ${ECLASS}"
14
15PATH="${PATH}:/opt/ghc/bin"
14 16
15# for later configuration using environment variables/ 17# for later configuration using environment variables/
16# returns the name of the ghc executable 18# returns the name of the ghc executable
17ghc-getghc() { 19ghc-getghc() {
18 echo "ghc" 20 echo "ghc"
24} 26}
25 27
26# returns the name of the ghc-pkg binary (ghc-pkg 28# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 29# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances); 30# bypass the script under certain circumstances);
29# for Cabal, we add an empty global package config file, 31# for Cabal, we add the global package config file,
30# because for some reason the global package file 32# because for some reason that's required
31# must be specified
32ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
33 if ghc-cabal; then 34 if ghc-cabal; then
34 echo '[]' > "${T}/empty.conf"
35 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" 35 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf"
36 else 36 else
37 echo "$(ghc-libdir)/ghc-pkg.bin" 37 echo $(ghc-libdir)/"ghc-pkg.bin"
38 fi 38 fi
39} 39}
40 40
41# returns the version of ghc 41# returns the version of ghc
42_GHC_VERSION_CACHE="" 42_GHC_VERSION_CACHE=""
45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" 45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
46 fi 46 fi
47 echo "${_GHC_VERSION_CACHE}" 47 echo "${_GHC_VERSION_CACHE}"
48} 48}
49 49
50# this function can be used to determine if ghc itself 50# returns true for ghc >= 6.4
51# uses the Cabal package format; it has nothing to do
52# with the Cabal libraries ... ghc uses the Cabal package
53# format since version 6.4
54ghc-cabal() { 51ghc-cabal() {
55 version_is_at_least "6.4" "$(ghc-version)" 52 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} 53}
93 54
94# returns the library directory 55# returns the library directory
95_GHC_LIBDIR_CACHE="" 56_GHC_LIBDIR_CACHE=""
96ghc-libdir() { 57ghc-libdir() {
100 echo "${_GHC_LIBDIR_CACHE}" 61 echo "${_GHC_LIBDIR_CACHE}"
101} 62}
102 63
103# returns the (Gentoo) library configuration directory 64# returns the (Gentoo) library configuration directory
104ghc-confdir() { 65ghc-confdir() {
105 echo "$(ghc-libdir)/gentoo" 66 echo $(ghc-libdir)/gentoo
106} 67}
107 68
108# returns the name of the local (package-specific) 69# returns the name of the local (package-specific)
109# package configuration file 70# package configuration file
110ghc-localpkgconf() { 71ghc-localpkgconf() {
113 74
114# make a ghci foo.o file from a libfoo.a file 75# make a ghci foo.o file from a libfoo.a file
115ghc-makeghcilib() { 76ghc-makeghcilib() {
116 local outfile 77 local outfile
117 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 78 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
118 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" 79 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1
119}
120
121# tests if a ghc package exists
122ghc-package-exists() {
123 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
124} 80}
125 81
126# creates a local (package-specific) package 82# creates a local (package-specific) package
127# configuration file; the arguments should be 83# configuration file; the arguments should be
128# uninstalled package description files, each 84# uninstalled package description files, each
130# no arguments are given, the resulting file is 86# no arguments are given, the resulting file is
131# empty 87# empty
132ghc-setup-pkg() { 88ghc-setup-pkg() {
133 local localpkgconf 89 local localpkgconf
134 localpkgconf="${S}/$(ghc-localpkgconf)" 90 localpkgconf="${S}/$(ghc-localpkgconf)"
135 echo '[]' > "${localpkgconf}" 91 echo '[' > ${localpkgconf}
136 for pkg in $*; do 92 while [ -n "$1" ]; do
137 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ 93 cat "$1" >> ${localpkgconf}
138 < "${pkg}" || die "failed to register ${pkg}" 94 shift
95 [ -n "$1" ] && echo ',' >> ${localpkgconf}
139 done 96 done
140} 97 echo ']' >> ${localpkgconf}
141
142# fixes the library and import directories path
143# of the package configuration file
144ghc-fixlibpath() {
145 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
146 if [[ -n "$2" ]]; then
147 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
148 fi
149} 98}
150 99
151# moves the local (package-specific) package configuration 100# moves the local (package-specific) package configuration
152# file to its final destination 101# file to its final destination
153ghc-install-pkg() { 102ghc-install-pkg() {
154 mkdir -p "${D}/$(ghc-confdir)" 103 mkdir -p ${D}/$(ghc-confdir)
155 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ 104 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \
156 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 105 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf)
157} 106}
158 107
159# registers all packages in the local (package-specific) 108# registers all packages in the local (package-specific)
160# package configuration file 109# package configuration file
161ghc-register-pkg() { 110ghc-register-pkg() {
162 local localpkgconf 111 local localpkgconf
163 localpkgconf="$(ghc-confdir)/$1" 112 localpkgconf="$(ghc-confdir)/$1"
164 if [[ -f "${localpkgconf}" ]]; then
165 for pkg in $(ghc-listpkg "${localpkgconf}"); do 113 for pkg in $(ghc-listpkg ${localpkgconf}); do
166 ebegin "Registering ${pkg} " 114 einfo "Registering ${pkg} ..."
167 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ 115 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \
168 | $(ghc-getghcpkg) -u --force > /dev/null 116 | $(ghc-getghcpkg) -u --force
169 eend $?
170 done 117 done
171 fi
172} 118}
173 119
174# re-adds all available .conf files to the global 120# re-adds all available .conf files to the global
175# package conf file, to be used on a ghc reinstallation 121# package conf file, to be used on a ghc reinstallation
176ghc-reregister() { 122ghc-reregister() {
177 einfo "Re-adding packages (may cause several harmless warnings) ..." 123 einfo "Re-adding packages ..."
124 ewarn "This may cause several warnings, but they should be harmless."
178 if [ -d "$(ghc-confdir)" ]; then 125 if [ -d "$(ghc-confdir)" ]; then
179 pushd "$(ghc-confdir)" > /dev/null 126 pushd $(ghc-confdir)
180 for conf in *.conf; do 127 for conf in *.conf; do
181# einfo "Processing ${conf} ..." 128 einfo "Processing ${conf} ..."
182 ghc-register-pkg "${conf}" 129 ghc-register-pkg ${conf}
183 done 130 done
184 popd > /dev/null 131 popd
185 fi 132 fi
186} 133}
187 134
188# unregisters a package configuration file 135# unregisters ...
189# protected are all packages that are still contained in
190# another package configuration file
191ghc-unregister-pkg() { 136ghc-unregister-pkg() {
192 local localpkgconf 137 local localpkgconf
193 local i
194 local pkg
195 local protected
196 localpkgconf="$(ghc-confdir)/$1" 138 localpkgconf="$(ghc-confdir)/$1"
197 139 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
198 for i in $(ghc-confdir)/*.conf; do 140 einfo "Unregistering ${pkg} ..."
199 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})" 141 $(ghc-getghcpkg) -r ${pkg} --force
200 done 142 done
201 # protected now contains the packages that cannot be unregistered yet
202
203 if [[ -f "${localpkgconf}" ]]; then
204 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} "
212 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
213 eend $?
214 fi
215 done
216 fi
217} 143}
218 144
219# help-function: reverse a list 145# help-function: reverse a list
220ghc-reverse() { 146ghc-reverse() {
221 local result 147 local result
222 local i
223 for i in $1; do 148 for i in $1; do
224 result="${i} ${result}" 149 result="${i} ${result}"
225 done 150 done
226 echo "${result}" 151 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} 152}
237 153
238# show the packages in a package configuration file 154# show the packages in a package configuration file
239ghc-listpkg() { 155ghc-listpkg() {
240 local ghcpkgcall 156 local ghcpkgcall
241 local i
242 for i in $*; do
243 if ghc-cabal; then 157 if ghc-cabal; then
244 echo $($(ghc-getghcpkg) list -f "${i}") \ 158 echo $($(ghc-getghcpkg) list -f $1) \
245 | sed \ 159 | sed \
246 -e "s|^.*${i}:\([^:]*\).*$|\1|" \ 160 -e "s|^.*${f}:\([^:]*\).*$|\1|" \
247 -e "s|/.*$||" \ 161 -e "s|/.*$||" \
248 -e "s|,| |g" -e "s|[()]||g" 162 -e "s|,| |g" -e "s|[()]||g"
249 else 163 else
250 echo $($(ghc-getghcpkgbin) -l -f "${i}") \ 164 echo $($(ghc-getghcpkgbin) -l -f $1) \
251 | cut -f2 -d':' \ 165 | cut -f2 -d':' \
252 | sed 's:,: :g' 166 | sed 's:,: :g'
253 fi 167 fi
254 done
255} 168}
256 169
257# exported function: registers the package-specific package 170# exported function: registers the package-specific package
258# configuration file 171# configuration file
259ghc-package_pkg_postinst() { 172ghc-package_pkg_postinst() {
260 ghc-register-pkg "$(ghc-localpkgconf)" 173 ghc-register-pkg $(ghc-localpkgconf)
261} 174}
262 175
263# exported function: unregisters the package-specific package 176# exported function: unregisters the package-specific
264# configuration file; a package contained therein is unregistered 177# package configuration file, under the condition that
265# only if it the same package is not also contained in another 178# after removal, no other instances of the package will
266# package configuration file ... 179# be left (necessary check because ghc packages are not
180# versioned)
267ghc-package_pkg_prerm() { 181ghc-package_pkg_prerm() {
182 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
268 ghc-unregister-pkg "$(ghc-localpkgconf)" 183 || ghc-unregister-pkg $(ghc-localpkgconf)
269} 184}
270 185
271EXPORT_FUNCTIONS pkg_postinst pkg_prerm 186EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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