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1# Copyright 1999-2004 Gentoo Foundation 1# Copyright 1999-2012 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 1.23 2007/07/25 18:07:02 dcoutts Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.34 2012/09/14 02:51:23 gienah Exp $
4# 4
5# @ECLASS: ghc-package.eclass
6# @MAINTAINER:
7# "Gentoo's Haskell Language team" <haskell@gentoo.org>
8# @AUTHOR:
5# Author: Andres Loeh <kosmikus@gentoo.org> 9# Original Author: Andres Loeh <kosmikus@gentoo.org>
6# Maintained by: Haskell herd <haskell@gentoo.org>
7#
8# This eclass helps with the Glasgow Haskell Compiler's package 10# @BLURB: This eclass helps with the Glasgow Haskell Compiler's package configuration utility.
9# configuration utility. 11# @DESCRIPTION:
12# Helper eclass to handle ghc installation/upgrade/deinstallation process.
10 13
11inherit versionator 14inherit versionator
12 15
13# promote /opt/ghc/bin to a better position in the search path 16# @FUNCTION: ghc-getghc
14PATH="/usr/bin:/opt/ghc/bin:${PATH}" 17# @DESCRIPTION:
15
16# for later configuration using environment variables/
17# returns the name of the ghc executable 18# returns the name of the ghc executable
18ghc-getghc() { 19ghc-getghc() {
19 type -P ghc 20 type -P ghc
20} 21}
21 22
23# @FUNCTION: ghc-getghcpkg
24# @DESCRIPTION:
22# returns the name of the ghc-pkg executable 25# Internal function determines returns the name of the ghc-pkg executable
23ghc-getghcpkg() { 26ghc-getghcpkg() {
24 type -P ghc-pkg 27 type -P ghc-pkg
25} 28}
26 29
30# @FUNCTION: ghc-getghcpkgbin
31# @DESCRIPTION:
27# returns the name of the ghc-pkg binary (ghc-pkg 32# returns the name of the ghc-pkg binary (ghc-pkg
28# itself usually is a shell script, and we have to 33# itself usually is a shell script, and we have to
29# bypass the script under certain circumstances); 34# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file, 35# for Cabal, we add an empty global package config file,
31# because for some reason the global package file 36# because for some reason the global package file
32# must be specified 37# must be specified
33ghc-getghcpkgbin() { 38ghc-getghcpkgbin() {
34 if ghc-cabal; then 39 # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs
40 # the wrapper script with the static flags
35 echo '[]' > "${T}/empty.conf" 41 echo '[]' > "${T}/empty.conf"
42 if version_is_at_least "7.5.20120516" "$(ghc-version)"; then
36 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf" 43 echo "$(ghc-libdir)/ghc-pkg" "--global-package-db=${T}/empty.conf"
37 else 44 else
38 echo "$(ghc-libdir)/ghc-pkg.bin" 45 echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
39 fi 46 fi
40} 47}
41 48
49# @FUNCTION: ghc-version
50# @DESCRIPTION:
42# returns the version of ghc 51# returns the version of ghc
43_GHC_VERSION_CACHE="" 52_GHC_VERSION_CACHE=""
44ghc-version() { 53ghc-version() {
45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then 54 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)" 55 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 fi 56 fi
48 echo "${_GHC_VERSION_CACHE}" 57 echo "${_GHC_VERSION_CACHE}"
49} 58}
50 59
51# this function can be used to determine if ghc itself 60# @FUNCTION: ghc-bestcabalversion
52# uses the Cabal package format; it has nothing to do 61# @DESCRIPTION:
53# with the Cabal libraries ... ghc uses the Cabal package
54# format since version 6.4
55ghc-cabal() {
56 version_is_at_least "6.4" "$(ghc-version)"
57}
58
59# return the best version of the Cabal library that is available 62# return the best version of the Cabal library that is available
60ghc-bestcabalversion() { 63ghc-bestcabalversion() {
61 local cabalversion
62 if ghc-cabal; then
63 # We ask portage, not ghc, so that we only pick up 64 # We ask portage, not ghc, so that we only pick up
64 # portage-installed cabal versions. 65 # portage-installed cabal versions.
65 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)" 66 local cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
66 echo "Cabal-${cabalversion}" 67 echo "Cabal-${cabalversion}"
67 else
68 # older ghc's don't support package versioning
69 echo Cabal
70 fi
71} 68}
72 69
70# @FUNCTION: ghc-sanecabal
71# @DESCRIPTION:
73# check if a standalone Cabal version is available for the 72# check if a standalone Cabal version is available for the
74# currently used ghc; takes minimal version of Cabal as 73# currently used ghc; takes minimal version of Cabal as
75# an optional argument 74# an optional argument
76ghc-sanecabal() { 75ghc-sanecabal() {
77 local f 76 local f
81 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return 80 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
82 done 81 done
83 return 1 82 return 1
84} 83}
85 84
86# checks if ghc and ghc-bin are installed in the same version 85# @FUNCTION: ghc-supports-shared-libraries
87# (if they're both installed); if this is not the case, we 86# @DESCRIPTION:
88# unfortunately cannot trust portage's dependency resolution 87# checks if ghc is built with support for building
89ghc-saneghc() { 88# shared libraries (aka '-dynamic' option)
90 local ghcversion 89ghc-supports-shared-libraries() {
91 local ghcbinversion 90 $(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn"
92 if [[ "${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}" != "${ghcbinversion}" ]]; then
99 return 1
100 fi
101 fi
102 return
103} 91}
104 92
93# @FUNCTION: ghc-extractportageversion
94# @DESCRIPTION:
105# extract the version of a portage-installed package 95# extract the version of a portage-installed package
106ghc-extractportageversion() { 96ghc-extractportageversion() {
107 local pkg 97 local pkg
108 local version 98 local version
109 pkg="$(best_version $1)" 99 pkg="$(best_version $1)"
111 version="${version%-r*}" 101 version="${version%-r*}"
112 version="${version%_pre*}" 102 version="${version%_pre*}"
113 echo "${version}" 103 echo "${version}"
114} 104}
115 105
106# @FUNCTION: ghc-libdir
107# @DESCRIPTION:
116# returns the library directory 108# returns the library directory
117_GHC_LIBDIR_CACHE="" 109_GHC_LIBDIR_CACHE=""
118ghc-libdir() { 110ghc-libdir() {
119 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then 111 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
120 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)" 112 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
121 fi 113 fi
122 echo "${_GHC_LIBDIR_CACHE}" 114 echo "${_GHC_LIBDIR_CACHE}"
123} 115}
124 116
117# @FUNCTION: ghc-confdir
118# @DESCRIPTION:
125# returns the (Gentoo) library configuration directory 119# returns the (Gentoo) library configuration directory
126ghc-confdir() { 120ghc-confdir() {
127 echo "$(ghc-libdir)/gentoo" 121 echo "$(ghc-libdir)/gentoo"
128} 122}
129 123
124# @FUNCTION: ghc-localpkgconf
125# @DESCRIPTION:
130# returns the name of the local (package-specific) 126# returns the name of the local (package-specific)
131# package configuration file 127# package configuration file
132ghc-localpkgconf() { 128ghc-localpkgconf() {
133 echo "${PF}.conf" 129 echo "${PF}.conf"
134} 130}
135 131
132# @FUNCTION: ghc-makeghcilib
133# @DESCRIPTION:
136# make a ghci foo.o file from a libfoo.a file 134# make a ghci foo.o file from a libfoo.a file
137ghc-makeghcilib() { 135ghc-makeghcilib() {
138 local outfile 136 local outfile
139 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 137 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
140 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" 138 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
141} 139}
142 140
141# @FUNCTION: ghc-package-exists
142# @DESCRIPTION:
143# tests if a ghc package exists 143# tests if a ghc package exists
144ghc-package-exists() { 144ghc-package-exists() {
145 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1 145 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
146} 146}
147 147
148# @FUNCTION: ghc-setup-pkg
149# @DESCRIPTION:
148# creates a local (package-specific) package 150# creates a local (package-specific) package
149# configuration file; the arguments should be 151# configuration file; the arguments should be
150# uninstalled package description files, each 152# uninstalled package description files, each
151# containing a single package description; if 153# containing a single package description; if
152# no arguments are given, the resulting file is 154# no arguments are given, the resulting file is
153# empty 155# empty
154ghc-setup-pkg() { 156ghc-setup-pkg() {
155 local localpkgconf
156 localpkgconf="${S}/$(ghc-localpkgconf)" 157 local localpkgconf="${S}/$(ghc-localpkgconf)"
157 echo '[]' > "${localpkgconf}" 158 echo '[]' > "${localpkgconf}"
159
158 for pkg in $*; do 160 for pkg in $*; do
159 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \ 161 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
160 < "${pkg}" || die "failed to register ${pkg}" 162 < "${pkg}" || die "failed to register ${pkg}"
161 done 163 done
162} 164}
163 165
166# @FUNCTION: ghc-fixlibpath
167# @DESCRIPTION:
164# fixes the library and import directories path 168# fixes the library and import directories path
165# of the package configuration file 169# of the package configuration file
166ghc-fixlibpath() { 170ghc-fixlibpath() {
167 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" 171 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
168 if [[ -n "$2" ]]; then 172 if [[ -n "$2" ]]; then
169 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" 173 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
170 fi 174 fi
171} 175}
172 176
177# @FUNCTION: ghc-install-pkg
178# @DESCRIPTION:
173# moves the local (package-specific) package configuration 179# moves the local (package-specific) package configuration
174# file to its final destination 180# file to its final destination
175ghc-install-pkg() { 181ghc-install-pkg() {
176 mkdir -p "${D}/$(ghc-confdir)" 182 mkdir -p "${D}/$(ghc-confdir)"
177 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ 183 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
178 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 184 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
179} 185}
180 186
187# @FUNCTION: ghc-register-pkg
188# @DESCRIPTION:
181# registers all packages in the local (package-specific) 189# registers all packages in the local (package-specific)
182# package configuration file 190# package configuration file
183ghc-register-pkg() { 191ghc-register-pkg() {
184 local localpkgconf
185 localpkgconf="$(ghc-confdir)/$1" 192 local localpkgconf="$(ghc-confdir)/$1"
193
186 if [[ -f "${localpkgconf}" ]]; then 194 if [[ -f "${localpkgconf}" ]]; then
187 for pkg in $(ghc-listpkg "${localpkgconf}"); do 195 for pkg in $(ghc-listpkg "${localpkgconf}"); do
188 ebegin "Registering ${pkg} " 196 ebegin "Registering ${pkg} "
189 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \ 197 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
190 | $(ghc-getghcpkg) -u --force > /dev/null 198 | $(ghc-getghcpkg) update - --force > /dev/null
191 eend $? 199 eend $?
192 done 200 done
193 fi 201 fi
194} 202}
195 203
204# @FUNCTION: ghc-reregister
205# @DESCRIPTION:
196# re-adds all available .conf files to the global 206# re-adds all available .conf files to the global
197# package conf file, to be used on a ghc reinstallation 207# package conf file, to be used on a ghc reinstallation
198ghc-reregister() { 208ghc-reregister() {
209 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
199 einfo "Re-adding packages (may cause several harmless warnings) ..." 210 einfo "Re-adding packages (may cause several harmless warnings) ..."
200 if [ -d "$(ghc-confdir)" ]; then 211 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
201 pushd "$(ghc-confdir)" > /dev/null 212 if [ -d "${CONFDIR}" ]; then
213 pushd "${CONFDIR}" > /dev/null
202 for conf in *.conf; do 214 for conf in *.conf; do
203# einfo "Processing ${conf} ..." 215 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
204 ghc-register-pkg "${conf}"
205 done 216 done
206 popd > /dev/null 217 popd > /dev/null
207 fi 218 fi
208} 219}
209 220
221# @FUNCTION: ghc-unregister-pkg
222# @DESCRIPTION:
210# unregisters a package configuration file 223# unregisters a package configuration file
211# protected are all packages that are still contained in 224# protected are all packages that are still contained in
212# another package configuration file 225# another package configuration file
213ghc-unregister-pkg() { 226ghc-unregister-pkg() {
214 local localpkgconf 227 local localpkgconf="$(ghc-confdir)/$1"
215 local i 228 local i
216 local pkg 229 local pkg
217 local protected
218 localpkgconf="$(ghc-confdir)/$1"
219
220 for i in $(ghc-confdir)/*.conf; do
221 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
222 done
223 # protected now contains the packages that cannot be unregistered yet
224 230
225 if [[ -f "${localpkgconf}" ]]; then 231 if [[ -f "${localpkgconf}" ]]; then
226 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 232 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 233 if ! ghc-package-exists "${pkg}"; then
230 :
231 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)." 234 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
232 else 235 else
233 ebegin "Unregistering ${pkg} " 236 ebegin "Unregistering ${pkg} "
234 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null 237 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
235 eend $? 238 eend $?
236 fi 239 fi
237 done 240 done
238 fi 241 fi
239} 242}
240 243
244# @FUNCTION: ghc-reverse
245# @DESCRIPTION:
241# help-function: reverse a list 246# help-function: reverse a list
242ghc-reverse() { 247ghc-reverse() {
243 local result 248 local result
244 local i 249 local i
245 for i in $1; do 250 for i in $1; do
246 result="${i} ${result}" 251 result="${i} ${result}"
247 done 252 done
248 echo "${result}" 253 echo "${result}"
249} 254}
250 255
256# @FUNCTION: ghc-elem
257# @DESCRIPTION:
251# help-function: element-check 258# help-function: element-check
252ghc-elem() { 259ghc-elem() {
253 local i 260 local i
254 for i in $2; do 261 for i in $2; do
255 [[ "$1" == "${i}" ]] && return 0 262 [[ "$1" == "${i}" ]] && return 0
256 done 263 done
257 return 1 264 return 1
258} 265}
259 266
267# @FUNCTION: ghc-listpkg
268# @DESCRIPTION:
260# show the packages in a package configuration file 269# show the packages in a package configuration file
261ghc-listpkg() { 270ghc-listpkg() {
262 local ghcpkgcall 271 local ghcpkgcall
263 local i 272 local i
273 local extra_flags
274 if version_is_at_least '6.12.3' "$(ghc-version)"; then
275 extra_flags="${extra_flags} -v0"
276 fi
264 for i in $*; do 277 for i in $*; do
265 if ghc-cabal; then
266 echo $($(ghc-getghcpkg) list -f "${i}") \ 278 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
267 | sed \ 279 | sed \
268 -e "s|^.*${i}:\([^:]*\).*$|\1|" \ 280 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
269 -e "s|/.*$||" \ 281 -e "s|/.*$||" \
270 -e "s|,| |g" -e "s|[()]||g" 282 -e "s|,| |g" -e "s|[(){}]||g"
271 else
272 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
273 | cut -f2 -d':' \
274 | sed 's:,: :g'
275 fi
276 done 283 done
277} 284}
278 285
279# exported function: check if we have a consistent ghc installation 286# @FUNCTION: ghc-package_pkg_postinst
280ghc-package_pkg_setup() { 287# @DESCRIPTION:
281 if ! ghc-saneghc; then
282 eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
283 eerror "installed. Portage currently cannot work correctly with this setup."
284 eerror "There are several possibilities to work around this problem:"
285 eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
286 eerror "(2) Unmerge ghc-bin."
287 eerror "(3) Unmerge ghc."
288 eerror "You probably want option 1 or 2."
289 die "Inconsistent versions of ghc and ghc-bin."
290 fi
291}
292
293# exported function: registers the package-specific package 288# exported function: registers the package-specific package
294# configuration file 289# configuration file
295ghc-package_pkg_postinst() { 290ghc-package_pkg_postinst() {
296 ghc-register-pkg "$(ghc-localpkgconf)" 291 ghc-register-pkg "$(ghc-localpkgconf)"
297} 292}
298 293
294# @FUNCTION: ghc-package_pkg_prerm
295# @DESCRIPTION:
299# exported function: unregisters the package-specific package 296# exported function: unregisters the package-specific package
300# configuration file; a package contained therein is unregistered 297# configuration file; a package contained therein is unregistered
301# only if it the same package is not also contained in another 298# only if it the same package is not also contained in another
302# package configuration file ... 299# package configuration file ...
303ghc-package_pkg_prerm() { 300ghc-package_pkg_prerm() {
304 ghc-unregister-pkg "$(ghc-localpkgconf)" 301 ghc-unregister-pkg "$(ghc-localpkgconf)"
305} 302}
306 303
307EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm 304EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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