/[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 1.9 2005/04/08 01:13:39 araujo Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.23 2007/07/25 18:07:02 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
10inherit versionator 11inherit versionator
11 12
12ECLASS="ghc-package"
13INHERITED="${INHERITED} ${ECLASS}"
14
15# promote /opt/ghc/bin to a better position in the search path 13# promote /opt/ghc/bin to a better position in the search path
16PATH="/usr/bin:/opt/ghc/bin:${PATH}" 14PATH="/usr/bin:/opt/ghc/bin:${PATH}"
17 15
18# for later configuration using environment variables/ 16# for later configuration using environment variables/
19# returns the name of the ghc executable 17# returns the name of the ghc executable
20ghc-getghc() { 18ghc-getghc() {
21 echo "ghc" 19 type -P ghc
22} 20}
23 21
24# returns the name of the ghc-pkg executable 22# returns the name of the ghc-pkg executable
25ghc-getghcpkg() { 23ghc-getghcpkg() {
26 echo "ghc-pkg" 24 type -P ghc-pkg
27} 25}
28 26
29# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
30# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
31# bypass the script under certain circumstances); 29# bypass the script under certain circumstances);
32# for Cabal, we add the global package config file, 30# for Cabal, we add an empty global package config file,
33# because for some reason that's required 31# because for some reason the global package file
32# must be specified
34ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
35 if ghc-cabal; then 34 if ghc-cabal; then
35 echo '[]' > "${T}/empty.conf"
36 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf" 36 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
37 else 37 else
38 echo $(ghc-libdir)/"ghc-pkg.bin" 38 echo "$(ghc-libdir)/ghc-pkg.bin"
39 fi 39 fi
40} 40}
41 41
42# returns the version of ghc 42# returns the version of ghc
43_GHC_VERSION_CACHE="" 43_GHC_VERSION_CACHE=""
44ghc-version() { 44ghc-version() {
45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then 45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" 46 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 fi 47 fi
48 echo "${_GHC_VERSION_CACHE}" 48 echo "${_GHC_VERSION_CACHE}"
49} 49}
50 50
51# returns true for ghc >= 6.4 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
52ghc-cabal() { 55ghc-cabal() {
53 version_is_at_least "6.4" "$(ghc-version)" 56 version_is_at_least "6.4" "$(ghc-version)"
57}
58
59# return the best version of the Cabal library that is available
60ghc-bestcabalversion() {
61 local cabalversion
62 if ghc-cabal; then
63 # We ask portage, not ghc, so that we only pick up
64 # portage-installed cabal versions.
65 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
66 echo "Cabal-${cabalversion}"
67 else
68 # older ghc's don't support package versioning
69 echo Cabal
70 fi
71}
72
73# check if a standalone Cabal version is available for the
74# currently used ghc; takes minimal version of Cabal as
75# an optional argument
76ghc-sanecabal() {
77 local f
78 local version
79 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
80 for f in $(ghc-confdir)/cabal-*; do
81 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
82 done
83 return 1
84}
85
86# checks if ghc and ghc-bin are installed in the same version
87# (if they're both installed); if this is not the case, we
88# unfortunately cannot trust portage's dependency resolution
89ghc-saneghc() {
90 local ghcversion
91 local ghcbinversion
92 if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then
93 return
94 fi
95 if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then
96 ghcversion="$(ghc-extractportageversion dev-lang/ghc)"
97 ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)"
98 if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then
99 return 1
100 fi
101 fi
102 return
103}
104
105# extract the version of a portage-installed package
106ghc-extractportageversion() {
107 local pkg
108 local version
109 pkg="$(best_version $1)"
110 version="${pkg#$1-}"
111 version="${version%-r*}"
112 version="${version%_pre*}"
113 echo "${version}"
54} 114}
55 115
56# returns the library directory 116# returns the library directory
57_GHC_LIBDIR_CACHE="" 117_GHC_LIBDIR_CACHE=""
58ghc-libdir() { 118ghc-libdir() {
62 echo "${_GHC_LIBDIR_CACHE}" 122 echo "${_GHC_LIBDIR_CACHE}"
63} 123}
64 124
65# returns the (Gentoo) library configuration directory 125# returns the (Gentoo) library configuration directory
66ghc-confdir() { 126ghc-confdir() {
67 echo $(ghc-libdir)/gentoo 127 echo "$(ghc-libdir)/gentoo"
68} 128}
69 129
70# returns the name of the local (package-specific) 130# returns the name of the local (package-specific)
71# package configuration file 131# package configuration file
72ghc-localpkgconf() { 132ghc-localpkgconf() {
75 135
76# make a ghci foo.o file from a libfoo.a file 136# make a ghci foo.o file from a libfoo.a file
77ghc-makeghcilib() { 137ghc-makeghcilib() {
78 local outfile 138 local outfile
79 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 139 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
80 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1 140 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
141}
142
143# tests if a ghc package exists
144ghc-package-exists() {
145 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
81} 146}
82 147
83# creates a local (package-specific) package 148# creates a local (package-specific) package
84# configuration file; the arguments should be 149# configuration file; the arguments should be
85# uninstalled package description files, each 150# uninstalled package description files, each
87# no arguments are given, the resulting file is 152# no arguments are given, the resulting file is
88# empty 153# empty
89ghc-setup-pkg() { 154ghc-setup-pkg() {
90 local localpkgconf 155 local localpkgconf
91 localpkgconf="${S}/$(ghc-localpkgconf)" 156 localpkgconf="${S}/$(ghc-localpkgconf)"
92 echo '[' > ${localpkgconf} 157 echo '[]' > "${localpkgconf}"
93 while [ -n "$1" ]; do 158 for pkg in $*; do
94 cat "$1" >> ${localpkgconf} 159 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
95 shift 160 < "${pkg}" || die "failed to register ${pkg}"
96 [ -n "$1" ] && echo ',' >> ${localpkgconf}
97 done 161 done
98 echo ']' >> ${localpkgconf}
99} 162}
100 163
101# fixes the library and import directories path 164# fixes the library and import directories path
102# of the package configuration file 165# of the package configuration file
103ghc-fixlibpath() { 166ghc-fixlibpath() {
104 sed -i "s|$1|$(ghc-libdir)|" ${S}/$(ghc-localpkgconf) 167 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
105 if [[ -n "$2" ]]; then 168 if [[ -n "$2" ]]; then
106 sed -i "s|$2|$(ghc-libdir)/imports|" ${S}/$(ghc-localpkgconf) 169 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
107 fi 170 fi
108} 171}
109 172
110# moves the local (package-specific) package configuration 173# moves the local (package-specific) package configuration
111# file to its final destination 174# file to its final destination
112ghc-install-pkg() { 175ghc-install-pkg() {
113 mkdir -p ${D}/$(ghc-confdir) 176 mkdir -p "${D}/$(ghc-confdir)"
114 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 177 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
115 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 178 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
116} 179}
117 180
118# registers all packages in the local (package-specific) 181# registers all packages in the local (package-specific)
119# package configuration file 182# package configuration file
120ghc-register-pkg() { 183ghc-register-pkg() {
121 local localpkgconf 184 local localpkgconf
122 localpkgconf="$(ghc-confdir)/$1" 185 localpkgconf="$(ghc-confdir)/$1"
123 if [[ -f ${localpkgconf} ]]; then 186 if [[ -f "${localpkgconf}" ]]; then
124 for pkg in $(ghc-listpkg ${localpkgconf}); do 187 for pkg in $(ghc-listpkg "${localpkgconf}"); do
125 ebegin "Registering ${pkg} " 188 ebegin "Registering ${pkg} "
126 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 189 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
127 | $(ghc-getghcpkg) -u --force > /dev/null 190 | $(ghc-getghcpkg) -u --force > /dev/null
128 eend $? 191 eend $?
129 done 192 done
130 fi 193 fi
131} 194}
132 195
133# re-adds all available .conf files to the global 196# re-adds all available .conf files to the global
134# package conf file, to be used on a ghc reinstallation 197# package conf file, to be used on a ghc reinstallation
135ghc-reregister() { 198ghc-reregister() {
136 einfo "Re-adding packages ..." 199 einfo "Re-adding packages (may cause several harmless warnings) ..."
137 einfo "(This may cause several warnings, but they should be harmless.)"
138 if [ -d "$(ghc-confdir)" ]; then 200 if [ -d "$(ghc-confdir)" ]; then
139 pushd $(ghc-confdir) > /dev/null 201 pushd "$(ghc-confdir)" > /dev/null
140 for conf in *.conf; do 202 for conf in *.conf; do
141 einfo "Processing ${conf} ..." 203# einfo "Processing ${conf} ..."
142 ghc-register-pkg ${conf} 204 ghc-register-pkg "${conf}"
143 done 205 done
144 popd > /dev/null 206 popd > /dev/null
145 fi 207 fi
146} 208}
147 209
148# unregisters ... 210# unregisters a package configuration file
211# protected are all packages that are still contained in
212# another package configuration file
149ghc-unregister-pkg() { 213ghc-unregister-pkg() {
150 local localpkgconf 214 local localpkgconf
215 local i
216 local pkg
217 local protected
151 localpkgconf="$(ghc-confdir)/$1" 218 localpkgconf="$(ghc-confdir)/$1"
219
220 for i in $(ghc-confdir)/*.conf; do
221 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
222 done
223 # protected now contains the packages that cannot be unregistered yet
224
152 if [[ -f ${localpkgconf} ]]; then 225 if [[ -f "${localpkgconf}" ]]; then
153 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 226 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
227 if $(ghc-elem "${pkg}" "${protected}"); then
228 einfo "Package ${pkg} is protected."
229 elif ! ghc-package-exists "${pkg}"; then
230 :
231 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
232 else
154 ebegin "Unregistering ${pkg} " 233 ebegin "Unregistering ${pkg} "
155 $(ghc-getghcpkg) -r ${pkg} --force > /dev/null 234 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
156 eend $? 235 eend $?
236 fi
157 done 237 done
158 fi 238 fi
159} 239}
160 240
161# help-function: reverse a list 241# help-function: reverse a list
162ghc-reverse() { 242ghc-reverse() {
163 local result 243 local result
244 local i
164 for i in $1; do 245 for i in $1; do
165 result="${i} ${result}" 246 result="${i} ${result}"
166 done 247 done
167 echo ${result} 248 echo "${result}"
249}
250
251# help-function: element-check
252ghc-elem() {
253 local i
254 for i in $2; do
255 [[ "$1" == "${i}" ]] && return 0
256 done
257 return 1
168} 258}
169 259
170# show the packages in a package configuration file 260# show the packages in a package configuration file
171ghc-listpkg() { 261ghc-listpkg() {
172 local ghcpkgcall 262 local ghcpkgcall
263 local i
264 for i in $*; do
173 if ghc-cabal; then 265 if ghc-cabal; then
174 echo $($(ghc-getghcpkg) list -f $1) \ 266 echo $($(ghc-getghcpkg) list -f "${i}") \
175 | sed \ 267 | sed \
176 -e "s|^.*${f}:\([^:]*\).*$|\1|" \ 268 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
177 -e "s|/.*$||" \ 269 -e "s|/.*$||" \
178 -e "s|,| |g" -e "s|[()]||g" 270 -e "s|,| |g" -e "s|[()]||g"
179 else 271 else
180 echo $($(ghc-getghcpkgbin) -l -f $1) \ 272 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
181 | cut -f2 -d':' \ 273 | cut -f2 -d':' \
182 | sed 's:,: :g' 274 | sed 's:,: :g'
275 fi
276 done
277}
278
279# exported function: check if we have a consistent ghc installation
280ghc-package_pkg_setup() {
281 if ! ghc-saneghc; then
282 eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
283 eerror "installed. Portage currently cannot work correctly with this setup."
284 eerror "There are several possibilities to work around this problem:"
285 eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
286 eerror "(2) Unmerge ghc-bin."
287 eerror "(3) Unmerge ghc."
288 eerror "You probably want option 1 or 2."
289 die "Inconsistent versions of ghc and ghc-bin."
183 fi 290 fi
184} 291}
185 292
186# exported function: registers the package-specific package 293# exported function: registers the package-specific package
187# configuration file 294# configuration file
188ghc-package_pkg_postinst() { 295ghc-package_pkg_postinst() {
189 ghc-register-pkg $(ghc-localpkgconf) 296 ghc-register-pkg "$(ghc-localpkgconf)"
190} 297}
191 298
192# exported function: unregisters the package-specific 299# exported function: unregisters the package-specific package
193# package configuration file, under the condition that 300# configuration file; a package contained therein is unregistered
194# after removal, no other instances of the package will 301# only if it the same package is not also contained in another
195# be left (necessary check because ghc packages are not 302# package configuration file ...
196# versioned)
197ghc-package_pkg_prerm() { 303ghc-package_pkg_prerm() {
198 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
199 || ghc-unregister-pkg $(ghc-localpkgconf) 304 ghc-unregister-pkg "$(ghc-localpkgconf)"
200} 305}
201 306
202EXPORT_FUNCTIONS pkg_postinst pkg_prerm 307EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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