/[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 1.18 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
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:${PATH}"
14 15
15# for later configuration using environment variables/ 16# for later configuration using environment variables/
16# returns the name of the ghc executable 17# returns the name of the ghc executable
17ghc-getghc() { 18ghc-getghc() {
18 echo "ghc" 19 echo "$(which 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 echo "$(which ghc-pkg)"
24} 25}
25 26
26# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances) 29# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file,
31# because for some reason the global package file
32# must be specified
29ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if ghc-cabal; then
35 echo '[]' > "${T}/empty.conf"
36 echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
37 else
30 echo $(ghc-libdir)/"ghc-pkg.bin" 38 echo "$(ghc-libdir)/ghc-pkg.bin"
39 fi
31} 40}
32 41
33# returns the version of ghc 42# returns the version of ghc
43_GHC_VERSION_CACHE=""
34ghc-version() { 44ghc-version() {
35 $(ghc-getghc) --version | sed 's:^.*version ::' 45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 fi
48 echo "${_GHC_VERSION_CACHE}"
49}
50
51# this function can be used to determine if ghc itself
52# uses the Cabal package format; it has nothing to do
53# with the Cabal libraries ... ghc uses the Cabal package
54# format since version 6.4
55ghc-cabal() {
56 version_is_at_least "6.4" "$(ghc-version)"
57}
58
59# return the best version of the Cabal library that is available
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
36} 93}
37 94
38# returns the library directory 95# returns the library directory
96_GHC_LIBDIR_CACHE=""
39ghc-libdir() { 97ghc-libdir() {
40 $(ghc-getghc) --print-libdir 98 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
99 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
100 fi
101 echo "${_GHC_LIBDIR_CACHE}"
41} 102}
42 103
43# returns the (Gentoo) library configuration directory 104# returns the (Gentoo) library configuration directory
44ghc-confdir() { 105ghc-confdir() {
45 echo $(ghc-libdir)/gentoo 106 echo "$(ghc-libdir)/gentoo"
46} 107}
47 108
48# returns the name of the local (package-specific) 109# returns the name of the local (package-specific)
49# package configuration file 110# package configuration file
50ghc-localpkgconf() { 111ghc-localpkgconf() {
51 echo "${PF}.conf" 112 echo "${PF}.conf"
52} 113}
53 114
115# make a ghci foo.o file from a libfoo.a file
116ghc-makeghcilib() {
117 local outfile
118 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
119 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
120}
121
122# tests if a ghc package exists
123ghc-package-exists() {
124 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
125}
126
54# creates an empty local (package-specific) package 127# creates a local (package-specific) package
55# configuration file 128# configuration file; the arguments should be
129# uninstalled package description files, each
130# containing a single package description; if
131# no arguments are given, the resulting file is
132# empty
56ghc-setup-pkg() { 133ghc-setup-pkg() {
134 local localpkgconf
135 localpkgconf="${S}/$(ghc-localpkgconf)"
57 echo '[]' > ${S}/$(ghc-localpkgconf) 136 echo '[]' > "${localpkgconf}"
137 for pkg in $*; do
138 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
139 < "${pkg}" || die "failed to register ${pkg}"
140 done
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
58} 150}
59 151
60# moves the local (package-specific) package configuration 152# moves the local (package-specific) package configuration
61# file to its final destination 153# file to its final destination
62ghc-install-pkg() { 154ghc-install-pkg() {
63 mkdir -p ${D}/$(ghc-confdir) 155 mkdir -p "${D}/$(ghc-confdir)"
64 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 156 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
65 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 157 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
66} 158}
67 159
68# registers all packages in the local (package-specific) 160# registers all packages in the local (package-specific)
69# package configuration file 161# package configuration file
70ghc-register-pkg() { 162ghc-register-pkg() {
71 local localpkgconf 163 local localpkgconf
72 localpkgconf=$(ghc-confdir)/$1 164 localpkgconf="$(ghc-confdir)/$1"
165 if [[ -f "${localpkgconf}" ]]; then
73 for pkg in $(ghc-listpkg ${localpkgconf}); do 166 for pkg in $(ghc-listpkg "${localpkgconf}"); do
74 einfo "Registering ${pkg} ..." 167 ebegin "Registering ${pkg} "
75 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 168 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
76 | $(ghc-getghcpkg) -u --force 169 | $(ghc-getghcpkg) -u --force > /dev/null
170 eend $?
77 done 171 done
172 fi
78} 173}
79 174
80# re-adds all available .conf files to the global 175# re-adds all available .conf files to the global
81# package conf file, to be used on a ghc reinstallation 176# package conf file, to be used on a ghc reinstallation
82ghc-reregister() { 177ghc-reregister() {
83 einfo "Re-adding packages ..." 178 einfo "Re-adding packages (may cause several harmless warnings) ..."
84 ewarn "This may cause several warnings, but they should be harmless." 179 if [ -d "$(ghc-confdir)" ]; then
85 pushd $(ghc-confdir) 180 pushd "$(ghc-confdir)" > /dev/null
86 for conf in *.conf; do 181 for conf in *.conf; do
87 einfo "Processing ${conf} ..." 182# einfo "Processing ${conf} ..."
88 ghc-register-pkg ${conf} 183 ghc-register-pkg "${conf}"
89 done 184 done
90 popd 185 popd > /dev/null
186 fi
91} 187}
92 188
93# unregisters ... 189# unregisters a package configuration file
190# protected are all packages that are still contained in
191# another package configuration file
94ghc-unregister-pkg() { 192ghc-unregister-pkg() {
95 local localpkgconf 193 local localpkgconf
194 local i
195 local pkg
196 local protected
96 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
97 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
98 einfo "Unregistering ${pkg} ..." 212 ebegin "Unregistering ${pkg} "
99 $(ghc-getghcpkg) -r ${pkg} --force 213 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
214 eend $?
215 fi
100 done 216 done
217 fi
101} 218}
102 219
103# help-function: reverse a list 220# help-function: reverse a list
104ghc-reverse() { 221ghc-reverse() {
105 local result 222 local result
223 local i
106 for i in $1; do 224 for i in $1; do
107 result="${i} ${result}" 225 result="${i} ${result}"
108 done 226 done
109 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
110} 237}
111 238
112# show the packages in a package configuration file 239# show the packages in a package configuration file
113ghc-listpkg() { 240ghc-listpkg() {
241 local ghcpkgcall
242 local i
243 for i in $*; do
244 if ghc-cabal; then
245 echo $($(ghc-getghcpkg) list -f "${i}") \
246 | sed \
247 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
248 -e "s|/.*$||" \
249 -e "s|,| |g" -e "s|[()]||g"
250 else
114 [ -f $1 ] && echo $($(ghc-getghcpkgbin) -l -f $1) \ 251 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
115 | cut -f2 -d':' \ 252 | cut -f2 -d':' \
116 | sed 's:,: :g' 253 | sed 's:,: :g'
254 fi
255 done
117} 256}
118 257
119# exported function: registers the package-specific package 258# exported function: registers the package-specific package
120# configuration file 259# configuration file
121ghc-package_pkg_postinst() { 260ghc-package_pkg_postinst() {
122 ghc-register-pkg $(ghc-localpkgconf) 261 ghc-register-pkg "$(ghc-localpkgconf)"
123} 262}
124 263
125# exported function: unregisters the package-specific 264# exported function: unregisters the package-specific package
126# package configuration file, under the condition that 265# configuration file; a package contained therein is unregistered
127# after removal, no other instances of the package will 266# only if it the same package is not also contained in another
128# be left (necessary check because ghc packages are not 267# package configuration file ...
129# versioned)
130ghc-package_pkg_prerm() { 268ghc-package_pkg_prerm() {
131 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
132 || ghc-unregister-pkg $(ghc-localpkgconf) 269 ghc-unregister-pkg "$(ghc-localpkgconf)"
133} 270}
134 271
135EXPORT_FUNCTIONS pkg_postinst pkg_prerm 272EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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