/[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 1.18 2006/08/02 19:49:03 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="${PATH}:/opt/ghc/bin"
16 15
17# for later configuration using environment variables/ 16# for later configuration using environment variables/
18# returns the name of the ghc executable 17# returns the name of the ghc executable
19ghc-getghc() { 18ghc-getghc() {
20 echo "ghc" 19 echo "$(which 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 echo "$(which ghc-pkg)"
26} 25}
27 26
28# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
29# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
30# bypass the script under certain circumstances); 29# bypass the script under certain circumstances);
31# for Cabal, we add the global package config file, 30# for Cabal, we add an empty global package config file,
32# because for some reason that's required 31# because for some reason the global package file
32# must be specified
33ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if ghc-cabal; then 34 if ghc-cabal; then
35 echo '[]' > "${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 cabalpackage
62 local cabalversion
63 if ghc-cabal; then
64 # Try if ghc-pkg can determine the latest version.
65 # If not, use portage.
66 cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)"
67 if [[ $? -eq 0 ]]; then
68 cabalversion="${cabalpackage#Cabal-}"
69 else
70 cabalpackage="$(best_version cabal)"
71 cabalversion="${cabalpackage#dev-haskell/cabal-}"
72 cabalversion="${cabalversion%-r*}"
73 cabalversion="${cabalversion%_pre*}"
74 fi
75 echo "Cabal-${cabalversion}"
76 else
77 # older ghc's don't support package versioning
78 echo Cabal
79 fi
80}
81
82# check if a standalone Cabal version is available for the
83# currently used ghc; takes minimal version of Cabal as
84# an optional argument
85ghc-sanecabal() {
86 local f
87 local version
88 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
89 for f in $(ghc-confdir)/cabal-*; do
90 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
91 done
92 return 1
53} 93}
54 94
55# returns the library directory 95# returns the library directory
56_GHC_LIBDIR_CACHE="" 96_GHC_LIBDIR_CACHE=""
57ghc-libdir() { 97ghc-libdir() {
61 echo "${_GHC_LIBDIR_CACHE}" 101 echo "${_GHC_LIBDIR_CACHE}"
62} 102}
63 103
64# returns the (Gentoo) library configuration directory 104# returns the (Gentoo) library configuration directory
65ghc-confdir() { 105ghc-confdir() {
66 echo $(ghc-libdir)/gentoo 106 echo "$(ghc-libdir)/gentoo"
67} 107}
68 108
69# returns the name of the local (package-specific) 109# returns the name of the local (package-specific)
70# package configuration file 110# package configuration file
71ghc-localpkgconf() { 111ghc-localpkgconf() {
74 114
75# make a ghci foo.o file from a libfoo.a file 115# make a ghci foo.o file from a libfoo.a file
76ghc-makeghcilib() { 116ghc-makeghcilib() {
77 local outfile 117 local outfile
78 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')" 118 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
79 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1 119 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
120}
121
122# tests if a ghc package exists
123ghc-package-exists() {
124 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
80} 125}
81 126
82# creates a local (package-specific) package 127# creates a local (package-specific) package
83# configuration file; the arguments should be 128# configuration file; the arguments should be
84# uninstalled package description files, each 129# uninstalled package description files, each
86# no arguments are given, the resulting file is 131# no arguments are given, the resulting file is
87# empty 132# empty
88ghc-setup-pkg() { 133ghc-setup-pkg() {
89 local localpkgconf 134 local localpkgconf
90 localpkgconf="${S}/$(ghc-localpkgconf)" 135 localpkgconf="${S}/$(ghc-localpkgconf)"
91 echo '[' > ${localpkgconf} 136 echo '[]' > "${localpkgconf}"
92 while [ -n "$1" ]; do 137 for pkg in $*; do
93 cat "$1" >> ${localpkgconf} 138 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
94 shift 139 < "${pkg}" || die "failed to register ${pkg}"
95 [ -n "$1" ] && echo ',' >> ${localpkgconf}
96 done 140 done
97 echo ']' >> ${localpkgconf} 141}
142
143# fixes the library and import directories path
144# of the package configuration file
145ghc-fixlibpath() {
146 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
147 if [[ -n "$2" ]]; then
148 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
149 fi
98} 150}
99 151
100# moves the local (package-specific) package configuration 152# moves the local (package-specific) package configuration
101# file to its final destination 153# file to its final destination
102ghc-install-pkg() { 154ghc-install-pkg() {
103 mkdir -p ${D}/$(ghc-confdir) 155 mkdir -p "${D}/$(ghc-confdir)"
104 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 156 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
105 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 157 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
106} 158}
107 159
108# registers all packages in the local (package-specific) 160# registers all packages in the local (package-specific)
109# package configuration file 161# package configuration file
110ghc-register-pkg() { 162ghc-register-pkg() {
111 local localpkgconf 163 local localpkgconf
112 localpkgconf="$(ghc-confdir)/$1" 164 localpkgconf="$(ghc-confdir)/$1"
165 if [[ -f "${localpkgconf}" ]]; then
113 for pkg in $(ghc-listpkg ${localpkgconf}); do 166 for pkg in $(ghc-listpkg "${localpkgconf}"); do
114 einfo "Registering ${pkg} ..." 167 ebegin "Registering ${pkg} "
115 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 168 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
116 | $(ghc-getghcpkg) -u --force 169 | $(ghc-getghcpkg) -u --force > /dev/null
170 eend $?
117 done 171 done
172 fi
118} 173}
119 174
120# re-adds all available .conf files to the global 175# re-adds all available .conf files to the global
121# package conf file, to be used on a ghc reinstallation 176# package conf file, to be used on a ghc reinstallation
122ghc-reregister() { 177ghc-reregister() {
123 einfo "Re-adding packages ..." 178 einfo "Re-adding packages (may cause several harmless warnings) ..."
124 ewarn "This may cause several warnings, but they should be harmless."
125 if [ -d "$(ghc-confdir)" ]; then 179 if [ -d "$(ghc-confdir)" ]; then
126 pushd $(ghc-confdir) 180 pushd "$(ghc-confdir)" > /dev/null
127 for conf in *.conf; do 181 for conf in *.conf; do
128 einfo "Processing ${conf} ..." 182# einfo "Processing ${conf} ..."
129 ghc-register-pkg ${conf} 183 ghc-register-pkg "${conf}"
130 done 184 done
131 popd 185 popd > /dev/null
132 fi 186 fi
133} 187}
134 188
135# unregisters ... 189# unregisters a package configuration file
190# protected are all packages that are still contained in
191# another package configuration file
136ghc-unregister-pkg() { 192ghc-unregister-pkg() {
137 local localpkgconf 193 local localpkgconf
194 local i
195 local pkg
196 local protected
138 localpkgconf="$(ghc-confdir)/$1" 197 localpkgconf="$(ghc-confdir)/$1"
198
199 for i in $(ghc-confdir)/*.conf; do
200 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
201 done
202 # protected now contains the packages that cannot be unregistered yet
203
204 if [[ -f "${localpkgconf}" ]]; then
139 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 205 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
206 if $(ghc-elem "${pkg}" "${protected}"); then
207 einfo "Package ${pkg} is protected."
208 elif ! ghc-package-exists "${pkg}"; then
209 :
210 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
211 else
140 einfo "Unregistering ${pkg} ..." 212 ebegin "Unregistering ${pkg} "
141 $(ghc-getghcpkg) -r ${pkg} --force 213 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
214 eend $?
215 fi
142 done 216 done
217 fi
143} 218}
144 219
145# help-function: reverse a list 220# help-function: reverse a list
146ghc-reverse() { 221ghc-reverse() {
147 local result 222 local result
223 local i
148 for i in $1; do 224 for i in $1; do
149 result="${i} ${result}" 225 result="${i} ${result}"
150 done 226 done
151 echo ${result} 227 echo "${result}"
228}
229
230# help-function: element-check
231ghc-elem() {
232 local i
233 for i in $2; do
234 [[ "$1" == "${i}" ]] && return 0
235 done
236 return 1
152} 237}
153 238
154# show the packages in a package configuration file 239# show the packages in a package configuration file
155ghc-listpkg() { 240ghc-listpkg() {
156 local ghcpkgcall 241 local ghcpkgcall
242 local i
243 for i in $*; do
157 if ghc-cabal; then 244 if ghc-cabal; then
158 echo $($(ghc-getghcpkg) list -f $1) \ 245 echo $($(ghc-getghcpkg) list -f "${i}") \
159 | sed \ 246 | sed \
160 -e "s|^.*${f}:\([^:]*\).*$|\1|" \ 247 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
161 -e "s|/.*$||" \ 248 -e "s|/.*$||" \
162 -e "s|,| |g" -e "s|[()]||g" 249 -e "s|,| |g" -e "s|[()]||g"
163 else 250 else
164 echo $($(ghc-getghcpkgbin) -l -f $1) \ 251 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
165 | cut -f2 -d':' \ 252 | cut -f2 -d':' \
166 | sed 's:,: :g' 253 | sed 's:,: :g'
167 fi 254 fi
255 done
168} 256}
169 257
170# exported function: registers the package-specific package 258# exported function: registers the package-specific package
171# configuration file 259# configuration file
172ghc-package_pkg_postinst() { 260ghc-package_pkg_postinst() {
173 ghc-register-pkg $(ghc-localpkgconf) 261 ghc-register-pkg "$(ghc-localpkgconf)"
174} 262}
175 263
176# exported function: unregisters the package-specific 264# exported function: unregisters the package-specific package
177# package configuration file, under the condition that 265# configuration file; a package contained therein is unregistered
178# after removal, no other instances of the package will 266# only if it the same package is not also contained in another
179# be left (necessary check because ghc packages are not 267# package configuration file ...
180# versioned)
181ghc-package_pkg_prerm() { 268ghc-package_pkg_prerm() {
182 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
183 || ghc-unregister-pkg $(ghc-localpkgconf) 269 ghc-unregister-pkg "$(ghc-localpkgconf)"
184} 270}
185 271
186EXPORT_FUNCTIONS pkg_postinst pkg_prerm 272EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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