/[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 1.6 2005/03/18 23:31:48 kosmikus Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.24 2007/07/25 18:40:29 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" 13# promote /opt/ghc/bin to a better position in the search path
13INHERITED="${INHERITED} ${ECLASS}" 14PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14
15PATH="${PATH}:/opt/ghc/bin"
16 15
17# for later configuration using environment variables/ 16# for later configuration using environment variables/
18# returns the name of the ghc executable 17# returns the name of the ghc executable
19ghc-getghc() { 18ghc-getghc() {
20 echo "ghc" 19 type -P ghc
21} 20}
22 21
23# returns the name of the ghc-pkg executable 22# returns the name of the ghc-pkg executable
24ghc-getghcpkg() { 23ghc-getghcpkg() {
25 echo "ghc-pkg" 24 type -P ghc-pkg
26} 25}
27 26
28# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
29# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
30# bypass the script under certain circumstances); 29# bypass the script under certain circumstances);
31# for Cabal, we add the global package config file, 30# for Cabal, we add an empty global package config file,
32# because for some reason that's required 31# because for some reason the global package file
32# must be specified
33ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if ghc-cabal; then 34 if ghc-cabal; then
35 echo '[]' > "${T}/empty.conf"
35 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf" 36 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.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=""
43ghc-version() { 44ghc-version() {
44 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then 45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')" 46 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
46 fi 47 fi
47 echo "${_GHC_VERSION_CACHE}" 48 echo "${_GHC_VERSION_CACHE}"
48} 49}
49 50
50# 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
51ghc-cabal() { 55ghc-cabal() {
52 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}"
53} 114}
54 115
55# returns the library directory 116# returns the library directory
56_GHC_LIBDIR_CACHE="" 117_GHC_LIBDIR_CACHE=""
57ghc-libdir() { 118ghc-libdir() {
61 echo "${_GHC_LIBDIR_CACHE}" 122 echo "${_GHC_LIBDIR_CACHE}"
62} 123}
63 124
64# returns the (Gentoo) library configuration directory 125# returns the (Gentoo) library configuration directory
65ghc-confdir() { 126ghc-confdir() {
66 echo $(ghc-libdir)/gentoo 127 echo "$(ghc-libdir)/gentoo"
67} 128}
68 129
69# returns the name of the local (package-specific) 130# returns the name of the local (package-specific)
70# package configuration file 131# package configuration file
71ghc-localpkgconf() { 132ghc-localpkgconf() {
74 135
75# make a ghci foo.o file from a libfoo.a file 136# make a ghci foo.o file from a libfoo.a file
76ghc-makeghcilib() { 137ghc-makeghcilib() {
77 local outfile 138 local outfile
78 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 139 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
79 ld --relocatable --discard-all --output="${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 "$1" > /dev/null 2>&1
80} 146}
81 147
82# creates a local (package-specific) package 148# creates a local (package-specific) package
83# configuration file; the arguments should be 149# configuration file; the arguments should be
84# uninstalled package description files, each 150# uninstalled package description files, each
86# no arguments are given, the resulting file is 152# no arguments are given, the resulting file is
87# empty 153# empty
88ghc-setup-pkg() { 154ghc-setup-pkg() {
89 local localpkgconf 155 local localpkgconf
90 localpkgconf="${S}/$(ghc-localpkgconf)" 156 localpkgconf="${S}/$(ghc-localpkgconf)"
91 echo '[' > ${localpkgconf} 157 echo '[]' > "${localpkgconf}"
92 while [ -n "$1" ]; do 158 for pkg in $*; do
93 cat "$1" >> ${localpkgconf} 159 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
94 shift 160 < "${pkg}" || die "failed to register ${pkg}"
95 [ -n "$1" ] && echo ',' >> ${localpkgconf}
96 done 161 done
97 echo ']' >> ${localpkgconf} 162}
163
164# fixes the library and import directories path
165# of the package configuration file
166ghc-fixlibpath() {
167 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
168 if [[ -n "$2" ]]; then
169 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
170 fi
98} 171}
99 172
100# moves the local (package-specific) package configuration 173# moves the local (package-specific) package configuration
101# file to its final destination 174# file to its final destination
102ghc-install-pkg() { 175ghc-install-pkg() {
103 mkdir -p ${D}/$(ghc-confdir) 176 mkdir -p "${D}/$(ghc-confdir)"
104 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 177 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
105 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 178 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
106} 179}
107 180
108# registers all packages in the local (package-specific) 181# registers all packages in the local (package-specific)
109# package configuration file 182# package configuration file
110ghc-register-pkg() { 183ghc-register-pkg() {
111 local localpkgconf 184 local localpkgconf
112 localpkgconf="$(ghc-confdir)/$1" 185 localpkgconf="$(ghc-confdir)/$1"
186 if [[ -f "${localpkgconf}" ]]; then
113 for pkg in $(ghc-listpkg ${localpkgconf}); do 187 for pkg in $(ghc-listpkg "${localpkgconf}"); do
114 einfo "Registering ${pkg} ..." 188 ebegin "Registering ${pkg} "
115 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 189 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
116 | $(ghc-getghcpkg) -u --force 190 | $(ghc-getghcpkg) -u --force > /dev/null
191 eend $?
117 done 192 done
193 fi
118} 194}
119 195
120# re-adds all available .conf files to the global 196# re-adds all available .conf files to the global
121# package conf file, to be used on a ghc reinstallation 197# package conf file, to be used on a ghc reinstallation
122ghc-reregister() { 198ghc-reregister() {
123 einfo "Re-adding packages ..." 199 einfo "Re-adding packages (may cause several harmless warnings) ..."
124 ewarn "This may cause several warnings, but they should be harmless."
125 if [ -d "$(ghc-confdir)" ]; then 200 if [ -d "$(ghc-confdir)" ]; then
126 pushd $(ghc-confdir) 201 pushd "$(ghc-confdir)" > /dev/null
127 for conf in *.conf; do 202 for conf in *.conf; do
128 einfo "Processing ${conf} ..." 203# einfo "Processing ${conf} ..."
129 ghc-register-pkg ${conf} 204 ghc-register-pkg "${conf}"
130 done 205 done
131 popd 206 popd > /dev/null
132 fi 207 fi
133} 208}
134 209
135# unregisters ... 210# unregisters a package configuration file
211# protected are all packages that are still contained in
212# another package configuration file
136ghc-unregister-pkg() { 213ghc-unregister-pkg() {
137 local localpkgconf 214 local localpkgconf
215 local i
216 local pkg
217 local protected
138 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 ${i})"
222 done
223 # protected now contains the packages that cannot be unregistered yet
224
225 if [[ -f "${localpkgconf}" ]]; then
139 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
140 einfo "Unregistering ${pkg} ..." 233 ebegin "Unregistering ${pkg} "
141 $(ghc-getghcpkg) -r ${pkg} --force 234 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
235 eend $?
236 fi
142 done 237 done
238 fi
143} 239}
144 240
145# help-function: reverse a list 241# help-function: reverse a list
146ghc-reverse() { 242ghc-reverse() {
147 local result 243 local result
244 local i
148 for i in $1; do 245 for i in $1; do
149 result="${i} ${result}" 246 result="${i} ${result}"
150 done 247 done
151 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
152} 258}
153 259
154# show the packages in a package configuration file 260# show the packages in a package configuration file
155ghc-listpkg() { 261ghc-listpkg() {
156 local ghcpkgcall 262 local ghcpkgcall
263 local i
264 for i in $*; do
157 if ghc-cabal; then 265 if ghc-cabal; then
158 echo $($(ghc-getghcpkg) list -f $1) \ 266 echo $($(ghc-getghcpkg) list -f "${i}") \
159 | sed \ 267 | sed \
160 -e "s|^.*${f}:\([^:]*\).*$|\1|" \ 268 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
161 -e "s|/.*$||" \ 269 -e "s|/.*$||" \
162 -e "s|,| |g" -e "s|[()]||g" 270 -e "s|,| |g" -e "s|[()]||g"
163 else 271 else
164 echo $($(ghc-getghcpkgbin) -l -f $1) \ 272 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
165 | cut -f2 -d':' \ 273 | cut -f2 -d':' \
166 | 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."
167 fi 290 fi
168} 291}
169 292
170# exported function: registers the package-specific package 293# exported function: registers the package-specific package
171# configuration file 294# configuration file
172ghc-package_pkg_postinst() { 295ghc-package_pkg_postinst() {
173 ghc-register-pkg $(ghc-localpkgconf) 296 ghc-register-pkg "$(ghc-localpkgconf)"
174} 297}
175 298
176# exported function: unregisters the package-specific 299# exported function: unregisters the package-specific package
177# package configuration file, under the condition that 300# configuration file; a package contained therein is unregistered
178# after removal, no other instances of the package will 301# only if it the same package is not also contained in another
179# be left (necessary check because ghc packages are not 302# package configuration file ...
180# versioned)
181ghc-package_pkg_prerm() { 303ghc-package_pkg_prerm() {
182 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
183 || ghc-unregister-pkg $(ghc-localpkgconf) 304 ghc-unregister-pkg "$(ghc-localpkgconf)"
184} 305}
185 306
186EXPORT_FUNCTIONS pkg_postinst pkg_prerm 307EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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