/[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 1.2 2004/11/03 20:38:35 kosmikus Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.27 2009/03/23 20:06:19 kolmodin 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
10ECLASS="ghc-package" 11inherit versionator
11INHERITED="$INHERITED $ECLASS"
12 12
13PATH="${PATH}:/opt/ghc/bin" 13# promote /opt/ghc/bin to a better position in the search path
14PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 15
15# for later configuration using environment variables/ 16# for later configuration using environment variables/
16# returns the name of the ghc executable 17# returns the name of the ghc executable
17ghc-getghc() { 18ghc-getghc() {
18 echo "ghc" 19 type -P ghc
19} 20}
20 21
21# returns the name of the ghc-pkg executable 22# returns the name of the ghc-pkg executable
22ghc-getghcpkg() { 23ghc-getghcpkg() {
23 echo "ghc-pkg" 24 type -P ghc-pkg
24} 25}
25 26
26# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances) 29# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file,
31# because for some reason the global package file
32# must be specified
29ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if version_is_at_least "6.10" "$(ghc-version)"; then
35 # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs
36 # the wrapper script with the static flags
37 echo '[]' > "${T}/empty.conf"
38 echo "$(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
30 echo $(ghc-libdir)/"ghc-pkg.bin" 43 echo "$(ghc-libdir)/ghc-pkg.bin"
44 fi
31} 45}
32 46
33# returns the version of ghc 47# returns the version of ghc
48_GHC_VERSION_CACHE=""
34ghc-version() { 49ghc-version() {
35 $(ghc-getghc) --version | sed 's:^.*version ::' 50 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
51 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
52 fi
53 echo "${_GHC_VERSION_CACHE}"
54}
55
56# this function can be used to determine if ghc itself
57# uses the Cabal package format; it has nothing to do
58# with the Cabal libraries ... ghc uses the Cabal package
59# format since version 6.4
60ghc-cabal() {
61 version_is_at_least "6.4" "$(ghc-version)"
62}
63
64# return the best version of the Cabal library that is available
65ghc-bestcabalversion() {
66 local cabalversion
67 if ghc-cabal; then
68 # We ask portage, not ghc, so that we only pick up
69 # portage-installed cabal versions.
70 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
71 echo "Cabal-${cabalversion}"
72 else
73 # older ghc's don't support package versioning
74 echo Cabal
75 fi
76}
77
78# check if a standalone Cabal version is available for the
79# currently used ghc; takes minimal version of Cabal as
80# an optional argument
81ghc-sanecabal() {
82 local f
83 local version
84 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
85 for f in $(ghc-confdir)/cabal-*; do
86 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
87 done
88 return 1
89}
90
91# checks if ghc and ghc-bin are installed in the same version
92# (if they're both installed); if this is not the case, we
93# unfortunately cannot trust portage's dependency resolution
94ghc-saneghc() {
95 local ghcversion
96 local ghcbinversion
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}
109
110# extract the version of a portage-installed package
111ghc-extractportageversion() {
112 local pkg
113 local version
114 pkg="$(best_version $1)"
115 version="${pkg#$1-}"
116 version="${version%-r*}"
117 version="${version%_pre*}"
118 echo "${version}"
36} 119}
37 120
38# returns the library directory 121# returns the library directory
122_GHC_LIBDIR_CACHE=""
39ghc-libdir() { 123ghc-libdir() {
40 $(ghc-getghc) --print-libdir 124 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
125 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
126 fi
127 echo "${_GHC_LIBDIR_CACHE}"
41} 128}
42 129
43# returns the (Gentoo) library configuration directory 130# returns the (Gentoo) library configuration directory
44ghc-confdir() { 131ghc-confdir() {
45 echo $(ghc-libdir)/gentoo 132 echo "$(ghc-libdir)/gentoo"
46} 133}
47 134
48# returns the name of the local (package-specific) 135# returns the name of the local (package-specific)
49# package configuration file 136# package configuration file
50ghc-localpkgconf() { 137ghc-localpkgconf() {
51 echo "${PF}.conf" 138 echo "${PF}.conf"
52} 139}
53 140
141# make a ghci foo.o file from a libfoo.a file
142ghc-makeghcilib() {
143 local outfile
144 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
145 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
146}
147
148# tests if a ghc package exists
149ghc-package-exists() {
150 local describe_flag
151 if version_is_at_least "6.4" "$(ghc-version)"; then
152 describe_flag="describe"
153 else
154 describe_flag="--show-package"
155 fi
156
157 $(ghc-getghcpkg) "${describe_flag}" "$1" > /dev/null 2>&1
158}
159
54# creates an empty local (package-specific) package 160# creates a local (package-specific) package
55# configuration file 161# configuration file; the arguments should be
162# uninstalled package description files, each
163# containing a single package description; if
164# no arguments are given, the resulting file is
165# empty
56ghc-setup-pkg() { 166ghc-setup-pkg() {
167 local localpkgconf
168 localpkgconf="${S}/$(ghc-localpkgconf)"
57 echo '[]' > ${S}/$(ghc-localpkgconf) 169 echo '[]' > "${localpkgconf}"
170 local update_flag
171 if version_is_at_least "6.4" "$(ghc-version)"; then
172 update_flag="update -"
173 else
174 update_flag="--update-package"
175 fi
176 for pkg in $*; do
177 $(ghc-getghcpkgbin) -f "${localpkgconf}" ${update_flag} --force \
178 < "${pkg}" || die "failed to register ${pkg}"
179 done
180}
181
182# fixes the library and import directories path
183# of the package configuration file
184ghc-fixlibpath() {
185 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
186 if [[ -n "$2" ]]; then
187 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
188 fi
58} 189}
59 190
60# moves the local (package-specific) package configuration 191# moves the local (package-specific) package configuration
61# file to its final destination 192# file to its final destination
62ghc-install-pkg() { 193ghc-install-pkg() {
63 mkdir -p ${D}/$(ghc-confdir) 194 mkdir -p "${D}/$(ghc-confdir)"
64 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 195 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
65 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 196 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
66} 197}
67 198
68# registers all packages in the local (package-specific) 199# registers all packages in the local (package-specific)
69# package configuration file 200# package configuration file
70ghc-register-pkg() { 201ghc-register-pkg() {
71 local localpkgconf 202 local localpkgconf
72 localpkgconf=$(ghc-confdir)/$1 203 localpkgconf="$(ghc-confdir)/$1"
204 local update_flag
205 local describe_flag
206 if version_is_at_least "6.4" "$(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
73 for pkg in $(ghc-listpkg ${localpkgconf}); do 214 for pkg in $(ghc-listpkg "${localpkgconf}"); do
74 einfo "Registering ${pkg} ..." 215 ebegin "Registering ${pkg} "
75 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 216 $(ghc-getghcpkgbin) -f "${localpkgconf}" "${describe_flag}" "${pkg}" \
76 | $(ghc-getghcpkg) -u --force 217 | $(ghc-getghcpkg) ${update_flag} --force > /dev/null
218 eend $?
77 done 219 done
220 fi
78} 221}
79 222
80# re-adds all available .conf files to the global 223# re-adds all available .conf files to the global
81# package conf file, to be used on a ghc reinstallation 224# package conf file, to be used on a ghc reinstallation
82ghc-reregister() { 225ghc-reregister() {
83 einfo "Re-adding packages ..." 226 einfo "Re-adding packages (may cause several harmless warnings) ..."
84 ewarn "This may cause several warnings, but they should be harmless." 227 PATH="/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
85 pushd $(ghc-confdir) 228 if [ -d "${CONFDIR}" ]; then
229 pushd "${CONFDIR}" > /dev/null
86 for conf in *.conf; do 230 for conf in *.conf; do
87 einfo "Processing ${conf} ..." 231 PATH="/usr/bin:${PATH}" ghc-register-pkg "${conf}"
88 ghc-register-pkg ${conf}
89 done 232 done
90 popd 233 popd > /dev/null
234 fi
91} 235}
92 236
93# unregisters ... 237# unregisters a package configuration file
238# protected are all packages that are still contained in
239# another package configuration file
94ghc-unregister-pkg() { 240ghc-unregister-pkg() {
95 local localpkgconf 241 local localpkgconf
242 local i
243 local pkg
244 local protected
245 local unregister_flag
96 localpkgconf=$(ghc-confdir)/$1 246 localpkgconf="$(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 ${i})"
256 done
257 # protected now contains the packages that cannot be unregistered yet
258
259 if [[ -f "${localpkgconf}" ]]; then
97 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 260 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
264 :
265 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
266 else
98 einfo "Unregistering ${pkg} ..." 267 ebegin "Unregistering ${pkg} "
99 $(ghc-getghcpkg) -r ${pkg} --force 268 $(ghc-getghcpkg) "${unregister_flag}" "${pkg}" --force > /dev/null
269 eend $?
270 fi
100 done 271 done
272 fi
101} 273}
102 274
103# help-function: reverse a list 275# help-function: reverse a list
104ghc-reverse() { 276ghc-reverse() {
105 local result 277 local result
278 local i
106 for i in $1; do 279 for i in $1; do
107 result="${i} ${result}" 280 result="${i} ${result}"
108 done 281 done
109 echo ${result} 282 echo "${result}"
283}
284
285# help-function: element-check
286ghc-elem() {
287 local i
288 for i in $2; do
289 [[ "$1" == "${i}" ]] && return 0
290 done
291 return 1
110} 292}
111 293
112# show the packages in a package configuration file 294# show the packages in a package configuration file
113ghc-listpkg() { 295ghc-listpkg() {
296 local ghcpkgcall
297 local i
298 for i in $*; do
299 if ghc-cabal; then
300 echo $($(ghc-getghcpkg) list -f "${i}") \
301 | sed \
302 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
303 -e "s|/.*$||" \
304 -e "s|,| |g" -e "s|[(){}]||g"
305 else
114 [ -f $1 ] && echo $($(ghc-getghcpkgbin) -l -f $1) \ 306 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
115 | cut -f2 -d':' \ 307 | cut -f2 -d':' \
116 | sed 's:,: :g' 308 | sed 's:,: :g'
309 fi
310 done
311}
312
313# exported function: check if we have a consistent ghc installation
314ghc-package_pkg_setup() {
315 if ! ghc-saneghc; then
316 eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
317 eerror "installed. Portage currently cannot work correctly with this setup."
318 eerror "There are several possibilities to work around this problem:"
319 eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
320 eerror "(2) Unmerge ghc-bin."
321 eerror "(3) Unmerge ghc."
322 eerror "You probably want option 1 or 2."
323 die "Inconsistent versions of ghc and ghc-bin."
324 fi
117} 325}
118 326
119# exported function: registers the package-specific package 327# exported function: registers the package-specific package
120# configuration file 328# configuration file
121ghc-package_pkg_postinst() { 329ghc-package_pkg_postinst() {
122 ghc-register-pkg $(ghc-localpkgconf) 330 ghc-register-pkg "$(ghc-localpkgconf)"
123} 331}
124 332
125# exported function: unregisters the package-specific 333# exported function: unregisters the package-specific package
126# package configuration file, under the condition that 334# configuration file; a package contained therein is unregistered
127# after removal, no other instances of the package will 335# only if it the same package is not also contained in another
128# be left (necessary check because ghc packages are not 336# package configuration file ...
129# versioned)
130ghc-package_pkg_prerm() { 337ghc-package_pkg_prerm() {
131 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
132 || ghc-unregister-pkg $(ghc-localpkgconf) 338 ghc-unregister-pkg "$(ghc-localpkgconf)"
133} 339}
134 340
135EXPORT_FUNCTIONS pkg_postinst pkg_prerm 341EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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