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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 1.28 2010/06/24 13:50:10 kolmodin Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.35 2012/11/16 15:47:17 slyfox 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:${PATH}" 17# @DESCRIPTION:
15
16# for later configuration using environment variables/
17# returns the name of the ghc executable 18# returns the name of the ghc executable
18ghc-getghc() { 19ghc-getghc() {
19 type -P ghc 20 type -P ghc
20} 21}
21 22
23# @FUNCTION: ghc-getghcpkg
24# @DESCRIPTION:
22# returns the name of the ghc-pkg executable 25# Internal function determines returns the name of the ghc-pkg executable
23ghc-getghcpkg() { 26ghc-getghcpkg() {
24 type -P ghc-pkg 27 type -P ghc-pkg
25} 28}
26 29
30# @FUNCTION: ghc-getghcpkgbin
31# @DESCRIPTION:
27# returns the name of the ghc-pkg binary (ghc-pkg 32# returns the name of the ghc-pkg binary (ghc-pkg
28# itself usually is a shell script, and we have to 33# itself usually is a shell script, and we have to
29# bypass the script under certain circumstances); 34# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file, 35# for Cabal, we add an empty global package config file,
31# because for some reason the global package file 36# because for some reason the global package file
32# must be specified 37# must be specified
33ghc-getghcpkgbin() { 38ghc-getghcpkgbin() {
34 if version_is_at_least "6.10" "$(ghc-version)"; then
35 # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs 39 # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs
36 # the wrapper script with the static flags 40 # the wrapper script with the static flags
37 echo '[]' > "${T}/empty.conf" 41 echo '[]' > "${T}/empty.conf"
42 if version_is_at_least "7.7.20121101" "$(ghc-version)"; then
43 # was moved to bin/ subtree by:
44 # http://www.haskell.org/pipermail/cvs-ghc/2012-September/076546.html
45 echo "$(ghc-libdir)/bin/ghc-pkg" "--global-package-db=${T}/empty.conf"
46 elif version_is_at_least "7.5.20120516" "$(ghc-version)"; then
47 echo "$(ghc-libdir)/ghc-pkg" "--global-package-db=${T}/empty.conf"
48 else
38 echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf" 49 echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
39 elif ghc-cabal; then
40 echo '[]' > "${T}/empty.conf"
41 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
42 else
43 echo "$(ghc-libdir)/ghc-pkg.bin"
44 fi 50 fi
45} 51}
46 52
53# @FUNCTION: ghc-version
54# @DESCRIPTION:
47# returns the version of ghc 55# returns the version of ghc
48_GHC_VERSION_CACHE="" 56_GHC_VERSION_CACHE=""
49ghc-version() { 57ghc-version() {
50 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then 58 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
51 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)" 59 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
52 fi 60 fi
53 echo "${_GHC_VERSION_CACHE}" 61 echo "${_GHC_VERSION_CACHE}"
54} 62}
55 63
56# this function can be used to determine if ghc itself 64# @FUNCTION: ghc-bestcabalversion
57# uses the Cabal package format; it has nothing to do 65# @DESCRIPTION:
58# with the Cabal libraries ... ghc uses the Cabal package
59# format since version 6.4
60ghc-cabal() {
61 version_is_at_least "6.4" "$(ghc-version)"
62}
63
64# return the best version of the Cabal library that is available 66# return the best version of the Cabal library that is available
65ghc-bestcabalversion() { 67ghc-bestcabalversion() {
66 local cabalversion
67 if ghc-cabal; then
68 # We ask portage, not ghc, so that we only pick up 68 # We ask portage, not ghc, so that we only pick up
69 # portage-installed cabal versions. 69 # portage-installed cabal versions.
70 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)" 70 local cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
71 echo "Cabal-${cabalversion}" 71 echo "Cabal-${cabalversion}"
72 else
73 # older ghc's don't support package versioning
74 echo Cabal
75 fi
76} 72}
77 73
74# @FUNCTION: ghc-sanecabal
75# @DESCRIPTION:
78# check if a standalone Cabal version is available for the 76# check if a standalone Cabal version is available for the
79# currently used ghc; takes minimal version of Cabal as 77# currently used ghc; takes minimal version of Cabal as
80# an optional argument 78# an optional argument
81ghc-sanecabal() { 79ghc-sanecabal() {
82 local f 80 local f
86 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return 84 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
87 done 85 done
88 return 1 86 return 1
89} 87}
90 88
91# checks if ghc and ghc-bin are installed in the same version 89# @FUNCTION: ghc-supports-shared-libraries
92# (if they're both installed); if this is not the case, we 90# @DESCRIPTION:
93# unfortunately cannot trust portage's dependency resolution 91# checks if ghc is built with support for building
94ghc-saneghc() { 92# shared libraries (aka '-dynamic' option)
95 local ghcversion 93ghc-supports-shared-libraries() {
96 local ghcbinversion 94 $(ghc-getghc) --info | grep "RTS ways" | grep -q "dyn"
97 if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then
98 return
99 fi
100 if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then
101 ghcversion="$(ghc-extractportageversion dev-lang/ghc)"
102 ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)"
103 if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then
104 return 1
105 fi
106 fi
107 return
108} 95}
109 96
97# @FUNCTION: ghc-extractportageversion
98# @DESCRIPTION:
110# extract the version of a portage-installed package 99# extract the version of a portage-installed package
111ghc-extractportageversion() { 100ghc-extractportageversion() {
112 local pkg 101 local pkg
113 local version 102 local version
114 pkg="$(best_version $1)" 103 pkg="$(best_version $1)"
116 version="${version%-r*}" 105 version="${version%-r*}"
117 version="${version%_pre*}" 106 version="${version%_pre*}"
118 echo "${version}" 107 echo "${version}"
119} 108}
120 109
110# @FUNCTION: ghc-libdir
111# @DESCRIPTION:
121# returns the library directory 112# returns the library directory
122_GHC_LIBDIR_CACHE="" 113_GHC_LIBDIR_CACHE=""
123ghc-libdir() { 114ghc-libdir() {
124 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then 115 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
125 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)" 116 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
126 fi 117 fi
127 echo "${_GHC_LIBDIR_CACHE}" 118 echo "${_GHC_LIBDIR_CACHE}"
128} 119}
129 120
121# @FUNCTION: ghc-confdir
122# @DESCRIPTION:
130# returns the (Gentoo) library configuration directory 123# returns the (Gentoo) library configuration directory
131ghc-confdir() { 124ghc-confdir() {
132 echo "$(ghc-libdir)/gentoo" 125 echo "$(ghc-libdir)/gentoo"
133} 126}
134 127
128# @FUNCTION: ghc-localpkgconf
129# @DESCRIPTION:
135# returns the name of the local (package-specific) 130# returns the name of the local (package-specific)
136# package configuration file 131# package configuration file
137ghc-localpkgconf() { 132ghc-localpkgconf() {
138 echo "${PF}.conf" 133 echo "${PF}.conf"
139} 134}
140 135
136# @FUNCTION: ghc-makeghcilib
137# @DESCRIPTION:
141# make a ghci foo.o file from a libfoo.a file 138# make a ghci foo.o file from a libfoo.a file
142ghc-makeghcilib() { 139ghc-makeghcilib() {
143 local outfile 140 local outfile
144 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 141 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
145 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1" 142 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
146} 143}
147 144
145# @FUNCTION: ghc-package-exists
146# @DESCRIPTION:
148# tests if a ghc package exists 147# tests if a ghc package exists
149ghc-package-exists() { 148ghc-package-exists() {
150 local describe_flag
151 if version_is_at_least "6.4" "$(ghc-version)"; then
152 describe_flag="describe"
153 else
154 describe_flag="--show-package"
155 fi
156
157 $(ghc-getghcpkg) "${describe_flag}" "$1" > /dev/null 2>&1 149 $(ghc-getghcpkg) describe "$1" > /dev/null 2>&1
158} 150}
159 151
152# @FUNCTION: ghc-setup-pkg
153# @DESCRIPTION:
160# creates a local (package-specific) package 154# creates a local (package-specific) package
161# configuration file; the arguments should be 155# configuration file; the arguments should be
162# uninstalled package description files, each 156# uninstalled package description files, each
163# containing a single package description; if 157# containing a single package description; if
164# no arguments are given, the resulting file is 158# no arguments are given, the resulting file is
165# empty 159# empty
166ghc-setup-pkg() { 160ghc-setup-pkg() {
167 local localpkgconf
168 localpkgconf="${S}/$(ghc-localpkgconf)" 161 local localpkgconf="${S}/$(ghc-localpkgconf)"
169 echo '[]' > "${localpkgconf}" 162 echo '[]' > "${localpkgconf}"
170 local update_flag 163
171 if version_is_at_least "6.4" "$(ghc-version)"; then
172 update_flag="update -"
173 else
174 update_flag="--update-package"
175 fi
176 for pkg in $*; do 164 for pkg in $*; do
177 $(ghc-getghcpkgbin) -f "${localpkgconf}" ${update_flag} --force \ 165 $(ghc-getghcpkgbin) -f "${localpkgconf}" update - --force \
178 < "${pkg}" || die "failed to register ${pkg}" 166 < "${pkg}" || die "failed to register ${pkg}"
179 done 167 done
180} 168}
181 169
170# @FUNCTION: ghc-fixlibpath
171# @DESCRIPTION:
182# fixes the library and import directories path 172# fixes the library and import directories path
183# of the package configuration file 173# of the package configuration file
184ghc-fixlibpath() { 174ghc-fixlibpath() {
185 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)" 175 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
186 if [[ -n "$2" ]]; then 176 if [[ -n "$2" ]]; then
187 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)" 177 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
188 fi 178 fi
189} 179}
190 180
181# @FUNCTION: ghc-install-pkg
182# @DESCRIPTION:
191# moves the local (package-specific) package configuration 183# moves the local (package-specific) package configuration
192# file to its final destination 184# file to its final destination
193ghc-install-pkg() { 185ghc-install-pkg() {
194 mkdir -p "${D}/$(ghc-confdir)" 186 mkdir -p "${D}/$(ghc-confdir)"
195 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \ 187 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
196 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 188 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
197} 189}
198 190
191# @FUNCTION: ghc-register-pkg
192# @DESCRIPTION:
199# registers all packages in the local (package-specific) 193# registers all packages in the local (package-specific)
200# package configuration file 194# package configuration file
201ghc-register-pkg() { 195ghc-register-pkg() {
202 local localpkgconf
203 localpkgconf="$(ghc-confdir)/$1" 196 local localpkgconf="$(ghc-confdir)/$1"
204 local update_flag 197
205 local describe_flag
206 if version_is_at_least "6.4" "$(ghc-version)"; then
207 update_flag="update -"
208 describe_flag="describe"
209 else
210 update_flag="--update-package"
211 describe_flag="--show-package"
212 fi
213 if [[ -f "${localpkgconf}" ]]; then 198 if [[ -f "${localpkgconf}" ]]; then
214 for pkg in $(ghc-listpkg "${localpkgconf}"); do 199 for pkg in $(ghc-listpkg "${localpkgconf}"); do
215 ebegin "Registering ${pkg} " 200 ebegin "Registering ${pkg} "
216 $(ghc-getghcpkgbin) -f "${localpkgconf}" "${describe_flag}" "${pkg}" \ 201 $(ghc-getghcpkgbin) -f "${localpkgconf}" describe "${pkg}" \
217 | $(ghc-getghcpkg) ${update_flag} --force > /dev/null 202 | $(ghc-getghcpkg) update - --force > /dev/null
218 eend $? 203 eend $?
219 done 204 done
220 fi 205 fi
221} 206}
222 207
208# @FUNCTION: ghc-reregister
209# @DESCRIPTION:
223# re-adds all available .conf files to the global 210# re-adds all available .conf files to the global
224# package conf file, to be used on a ghc reinstallation 211# package conf file, to be used on a ghc reinstallation
225ghc-reregister() { 212ghc-reregister() {
213 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
226 einfo "Re-adding packages (may cause several harmless warnings) ..." 214 einfo "Re-adding packages (may cause several harmless warnings) ..."
227 PATH="/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)" 215 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
228 if [ -d "${CONFDIR}" ]; then 216 if [ -d "${CONFDIR}" ]; then
229 pushd "${CONFDIR}" > /dev/null 217 pushd "${CONFDIR}" > /dev/null
230 for conf in *.conf; do 218 for conf in *.conf; do
231 PATH="/usr/bin:${PATH}" ghc-register-pkg "${conf}" 219 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
232 done 220 done
233 popd > /dev/null 221 popd > /dev/null
234 fi 222 fi
235} 223}
236 224
225# @FUNCTION: ghc-unregister-pkg
226# @DESCRIPTION:
237# unregisters a package configuration file 227# unregisters a package configuration file
238# protected are all packages that are still contained in 228# protected are all packages that are still contained in
239# another package configuration file 229# another package configuration file
240ghc-unregister-pkg() { 230ghc-unregister-pkg() {
241 local localpkgconf 231 local localpkgconf="$(ghc-confdir)/$1"
242 local i 232 local i
243 local pkg 233 local pkg
244 local protected
245 local unregister_flag
246 localpkgconf="$(ghc-confdir)/$1"
247
248 if version_is_at_least "6.4" "$(ghc-version)"; then
249 unregister_flag="unregister"
250 else
251 unregister_flag="--remove-package"
252 fi
253
254 for i in $(ghc-confdir)/*.conf; do
255 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
256 done
257 # protected now contains the packages that cannot be unregistered yet
258 234
259 if [[ -f "${localpkgconf}" ]]; then 235 if [[ -f "${localpkgconf}" ]]; then
260 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 236 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
261 if $(ghc-elem "${pkg}" "${protected}"); then
262 einfo "Package ${pkg} is protected."
263 elif ! ghc-package-exists "${pkg}"; then 237 if ! ghc-package-exists "${pkg}"; then
264 :
265 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)." 238 einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
266 else 239 else
267 ebegin "Unregistering ${pkg} " 240 ebegin "Unregistering ${pkg} "
268 $(ghc-getghcpkg) "${unregister_flag}" "${pkg}" --force > /dev/null 241 $(ghc-getghcpkg) unregister "${pkg}" --force > /dev/null
269 eend $? 242 eend $?
270 fi 243 fi
271 done 244 done
272 fi 245 fi
273} 246}
274 247
248# @FUNCTION: ghc-reverse
249# @DESCRIPTION:
275# help-function: reverse a list 250# help-function: reverse a list
276ghc-reverse() { 251ghc-reverse() {
277 local result 252 local result
278 local i 253 local i
279 for i in $1; do 254 for i in $1; do
280 result="${i} ${result}" 255 result="${i} ${result}"
281 done 256 done
282 echo "${result}" 257 echo "${result}"
283} 258}
284 259
260# @FUNCTION: ghc-elem
261# @DESCRIPTION:
285# help-function: element-check 262# help-function: element-check
286ghc-elem() { 263ghc-elem() {
287 local i 264 local i
288 for i in $2; do 265 for i in $2; do
289 [[ "$1" == "${i}" ]] && return 0 266 [[ "$1" == "${i}" ]] && return 0
290 done 267 done
291 return 1 268 return 1
292} 269}
293 270
271# @FUNCTION: ghc-listpkg
272# @DESCRIPTION:
294# show the packages in a package configuration file 273# show the packages in a package configuration file
295ghc-listpkg() { 274ghc-listpkg() {
296 local ghcpkgcall 275 local ghcpkgcall
297 local i 276 local i
298 local extra_flags 277 local extra_flags
299 if version_is_at_least '6.12.3' "$(ghc-version)"; then 278 if version_is_at_least '6.12.3' "$(ghc-version)"; then
300 extra_flags="${extra_flags} -v0" 279 extra_flags="${extra_flags} -v0"
301 fi 280 fi
302 for i in $*; do 281 for i in $*; do
303 if ghc-cabal; then
304 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \ 282 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
305 | sed \ 283 | sed \
306 -e "s|^.*${i}:\([^:]*\).*$|\1|" \ 284 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
307 -e "s|/.*$||" \ 285 -e "s|/.*$||" \
308 -e "s|,| |g" -e "s|[(){}]||g" 286 -e "s|,| |g" -e "s|[(){}]||g"
309 else
310 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
311 | cut -f2 -d':' \
312 | sed 's:,: :g'
313 fi
314 done 287 done
315} 288}
316 289
317# exported function: check if we have a consistent ghc installation 290# @FUNCTION: ghc-package_pkg_postinst
318ghc-package_pkg_setup() { 291# @DESCRIPTION:
319 if ! ghc-saneghc; then
320 eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
321 eerror "installed. Portage currently cannot work correctly with this setup."
322 eerror "There are several possibilities to work around this problem:"
323 eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
324 eerror "(2) Unmerge ghc-bin."
325 eerror "(3) Unmerge ghc."
326 eerror "You probably want option 1 or 2."
327 die "Inconsistent versions of ghc and ghc-bin."
328 fi
329}
330
331# exported function: registers the package-specific package 292# exported function: registers the package-specific package
332# configuration file 293# configuration file
333ghc-package_pkg_postinst() { 294ghc-package_pkg_postinst() {
334 ghc-register-pkg "$(ghc-localpkgconf)" 295 ghc-register-pkg "$(ghc-localpkgconf)"
335} 296}
336 297
298# @FUNCTION: ghc-package_pkg_prerm
299# @DESCRIPTION:
337# exported function: unregisters the package-specific package 300# exported function: unregisters the package-specific package
338# configuration file; a package contained therein is unregistered 301# configuration file; a package contained therein is unregistered
339# only if it the same package is not also contained in another 302# only if it the same package is not also contained in another
340# package configuration file ... 303# package configuration file ...
341ghc-package_pkg_prerm() { 304ghc-package_pkg_prerm() {
342 ghc-unregister-pkg "$(ghc-localpkgconf)" 305 ghc-unregister-pkg "$(ghc-localpkgconf)"
343} 306}
344 307
345EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm 308EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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