/[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 1.1 2004/11/03 15:06:41 kosmikus Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.1.1.1 2005/11/30 09:59:38 chriswhite Exp $
4# 4#
5# Author: Andres Loeh <kosmikus@gentoo.org> 5# Author: Andres Loeh <kosmikus@gentoo.org>
6# 6#
7# This eclass helps with the Glasgow Haskell Compiler's package 7# This eclass helps with the Glasgow Haskell Compiler's package
8# configuration utility. 8# configuration utility.
9 9
10ECLASS="ghc-package" 10inherit versionator
11INHERITED="$INHERITED $ECLASS"
12 11
13PATH="${PATH}:/opt/ghc/bin" 12# promote /opt/ghc/bin to a better position in the search path
13PATH="/usr/bin:/opt/ghc/bin:${PATH}"
14 14
15# for later configuration using environment variables/ 15# for later configuration using environment variables/
16# returns the name of the ghc executable 16# returns the name of the ghc executable
17ghc-getghc() { 17ghc-getghc() {
18 echo "ghc" 18 echo "ghc"
23 echo "ghc-pkg" 23 echo "ghc-pkg"
24} 24}
25 25
26# returns the name of the ghc-pkg binary (ghc-pkg 26# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 27# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances) 28# bypass the script under certain circumstances);
29# for Cabal, we add an empty global package config file,
30# because for some reason the global package file
31# must be specified
29ghc-getghcpkgbin() { 32ghc-getghcpkgbin() {
33 if ghc-cabal; then
34 echo '[]' > "${T}/empty.conf"
35 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
36 else
30 echo $(ghc-libdir)/"ghc-pkg.bin" 37 echo "$(ghc-libdir)/ghc-pkg.bin"
38 fi
31} 39}
32 40
33# returns the version of ghc 41# returns the version of ghc
42_GHC_VERSION_CACHE=""
34ghc-version() { 43ghc-version() {
44 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
35 $(ghc-getghc) --version | sed 's:^.*version ::' 45 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
46 fi
47 echo "${_GHC_VERSION_CACHE}"
48}
49
50# this function can be used to determine if ghc itself
51# uses the Cabal package format; it has nothing to do
52# with the Cabal libraries ... ghc uses the Cabal package
53# format since version 6.4
54ghc-cabal() {
55 version_is_at_least "6.4" "$(ghc-version)"
56}
57
58# return the best version of the Cabal library that is available
59ghc-bestcabalversion() {
60 local cabalpackage
61 local cabalversion
62 if ghc-cabal; then
63 # Try if ghc-pkg can determine the latest version.
64 # If not, use portage.
65 cabalpackage="$($(ghc-getghcpkg) latest Cabal 2> /dev/null)"
66 if [[ $? -eq 0 ]]; then
67 cabalversion="${cabalpackage#Cabal-}"
68 else
69 cabalpackage="$(best_version cabal)"
70 cabalversion="${cabalpackage#dev-haskell/cabal-}"
71 cabalversion="${cabalversion%-r*}"
72 cabalversion="${cabalversion%_pre*}"
73 fi
74 echo "Cabal-${cabalversion}"
75 else
76 # older ghc's don't support package versioning
77 echo Cabal
78 fi
79}
80
81# check if a standalone Cabal version is available for the
82# currently used ghc; takes minimal version of Cabal as
83# an optional argument
84ghc-sanecabal() {
85 local f
86 local version
87 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
88 for f in $(ghc-confdir)/cabal-*; do
89 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
90 done
91 return 1
36} 92}
37 93
38# returns the library directory 94# returns the library directory
95_GHC_LIBDIR_CACHE=""
39ghc-libdir() { 96ghc-libdir() {
40 $(ghc-getghc) --print-libdir 97 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
98 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
99 fi
100 echo "${_GHC_LIBDIR_CACHE}"
41} 101}
42 102
43# returns the (Gentoo) library configuration directory 103# returns the (Gentoo) library configuration directory
44ghc-confdir() { 104ghc-confdir() {
45 echo $(ghc-libdir)/gentoo 105 echo "$(ghc-libdir)/gentoo"
46} 106}
47 107
48# returns the name of the local (package-specific) 108# returns the name of the local (package-specific)
49# package configuration file 109# package configuration file
50ghc-localpkgconf() { 110ghc-localpkgconf() {
51 echo "${PF}.conf" 111 echo "${PF}.conf"
52} 112}
53 113
114# make a ghci foo.o file from a libfoo.a file
115ghc-makeghcilib() {
116 local outfile
117 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
118 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
119}
120
121# tests if a ghc package exists
122ghc-package-exists() {
123 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
124}
125
54# creates an empty local (package-specific) package 126# creates a local (package-specific) package
55# configuration file 127# configuration file; the arguments should be
128# uninstalled package description files, each
129# containing a single package description; if
130# no arguments are given, the resulting file is
131# empty
56ghc-setup-pkg() { 132ghc-setup-pkg() {
133 local localpkgconf
134 localpkgconf="${S}/$(ghc-localpkgconf)"
57 echo '[]' > ${S}/$(ghc-localpkgconf) 135 echo '[]' > "${localpkgconf}"
136 for pkg in $*; do
137 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
138 < "${pkg}" || die "failed to register ${pkg}"
139 done
140}
141
142# fixes the library and import directories path
143# of the package configuration file
144ghc-fixlibpath() {
145 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
146 if [[ -n "$2" ]]; then
147 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
148 fi
58} 149}
59 150
60# moves the local (package-specific) package configuration 151# moves the local (package-specific) package configuration
61# file to its final destination 152# file to its final destination
62ghc-install-pkg() { 153ghc-install-pkg() {
63 mkdir -p ${D}/$(ghc-confdir) 154 mkdir -p "${D}/$(ghc-confdir)"
64 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 155 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
65 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 156 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
66} 157}
67 158
68# registers all packages in the local (package-specific) 159# registers all packages in the local (package-specific)
69# package configuration file 160# package configuration file
70ghc-register-pkg() { 161ghc-register-pkg() {
71 local localpkgconf 162 local localpkgconf
72 localpkgconf=$(ghc-confdir)/$1 163 localpkgconf="$(ghc-confdir)/$1"
164 if [[ -f "${localpkgconf}" ]]; then
73 for pkg in $(ghc-listpkg ${localpkgconf}); do 165 for pkg in $(ghc-listpkg "${localpkgconf}"); do
74 einfo "Registering ${pkg} ..." 166 ebegin "Registering ${pkg} "
75 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 167 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
76 | $(ghc-getghcpkg) -u --auto-ghci-libs --force 168 | $(ghc-getghcpkg) -u --force > /dev/null
169 eend $?
77 done 170 done
171 fi
78} 172}
79 173
80# re-adds all available .conf files to the global 174# re-adds all available .conf files to the global
81# package conf file, to be used on a ghc reinstallation 175# package conf file, to be used on a ghc reinstallation
82ghc-reregister() { 176ghc-reregister() {
83 einfo "Re-adding packages ..." 177 einfo "Re-adding packages (may cause several harmless warnings) ..."
84 ewarn "This may cause several warnings, but they should be harmless." 178 if [ -d "$(ghc-confdir)" ]; then
85 pushd $(ghc-confdir) 179 pushd "$(ghc-confdir)" > /dev/null
86 for conf in *.conf; do 180 for conf in *.conf; do
87 einfo "Processing ${conf} ..." 181# einfo "Processing ${conf} ..."
88 ghc-register-pkg ${conf} 182 ghc-register-pkg "${conf}"
89 done 183 done
90 popd 184 popd > /dev/null
185 fi
91} 186}
92 187
93# unregisters ... 188# unregisters a package configuration file
189# protected are all packages that are still contained in
190# another package configuration file
94ghc-unregister-pkg() { 191ghc-unregister-pkg() {
95 local localpkgconf 192 local localpkgconf
193 local i
194 local pkg
195 local protected
96 localpkgconf=$(ghc-confdir)/$1 196 localpkgconf="$(ghc-confdir)/$1"
197
198 for i in $(ghc-confdir)/*.conf; do
199 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
200 done
201 # protected now contains the packages that cannot be unregistered yet
202
203 if [[ -f "${localpkgconf}" ]]; then
97 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 204 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
205 if $(ghc-elem "${pkg}" "${protected}"); then
206 einfo "Package ${pkg} is protected."
207 elif ! ghc-package-exists "${pkg}"; then
208 :
209 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
210 else
98 einfo "Unregistering ${pkg} ..." 211 ebegin "Unregistering ${pkg} "
99 $(ghc-getghcpkg) -r ${pkg} --force 212 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
213 eend $?
214 fi
100 done 215 done
216 fi
101} 217}
102 218
103# help-function: reverse a list 219# help-function: reverse a list
104ghc-reverse() { 220ghc-reverse() {
105 local result 221 local result
222 local i
106 for i in $1; do 223 for i in $1; do
107 result="${i} ${result}" 224 result="${i} ${result}"
108 done 225 done
109 echo ${result} 226 echo "${result}"
227}
228
229# help-function: element-check
230ghc-elem() {
231 local i
232 for i in $2; do
233 [[ "$1" == "${i}" ]] && return 0
234 done
235 return 1
110} 236}
111 237
112# show the packages in a package configuration file 238# show the packages in a package configuration file
113ghc-listpkg() { 239ghc-listpkg() {
240 local ghcpkgcall
241 local i
242 for i in $*; do
243 if ghc-cabal; then
244 echo $($(ghc-getghcpkg) list -f "${i}") \
245 | sed \
246 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
247 -e "s|/.*$||" \
248 -e "s|,| |g" -e "s|[()]||g"
249 else
114 [ -f $1 ] && echo $($(ghc-getghcpkgbin) -l -f $1) \ 250 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
115 | cut -f2 -d':' \ 251 | cut -f2 -d':' \
116 | sed 's:,: :g' 252 | sed 's:,: :g'
253 fi
254 done
117} 255}
118 256
119# exported function: registers the package-specific package 257# exported function: registers the package-specific package
120# configuration file 258# configuration file
121ghc-package_pkg_postinst() { 259ghc-package_pkg_postinst() {
122 ghc-register-pkg $(ghc-localpkgconf) 260 ghc-register-pkg "$(ghc-localpkgconf)"
123} 261}
124 262
125# exported function: unregisters the package-specific 263# exported function: unregisters the package-specific package
126# package configuration file, under the condition that 264# configuration file; a package contained therein is unregistered
127# after removal, no other instances of the package will 265# only if it the same package is not also contained in another
128# be left (necessary check because ghc packages are not 266# package configuration file ...
129# versioned)
130ghc-package_pkg_prerm() { 267ghc-package_pkg_prerm() {
131 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
132 || ghc-unregister-pkg $(ghc-localpkgconf) 268 ghc-unregister-pkg "$(ghc-localpkgconf)"
133} 269}
134 270
135EXPORT_FUNCTIONS pkg_postinst pkg_prerm 271EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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