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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 1.23 2007/07/25 18:07:02 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:${PATH}"
14 15
15# for later configuration using environment variables/ 16# for later configuration using environment variables/
16# returns the name of the ghc executable 17# returns the name of the ghc executable
17ghc-getghc() { 18ghc-getghc() {
18 echo "ghc" 19 type -P ghc
19} 20}
20 21
21# returns the name of the ghc-pkg executable 22# returns the name of the ghc-pkg executable
22ghc-getghcpkg() { 23ghc-getghcpkg() {
23 echo "ghc-pkg" 24 type -P ghc-pkg
24} 25}
25 26
26# returns the name of the ghc-pkg binary (ghc-pkg 27# returns the name of the ghc-pkg binary (ghc-pkg
27# itself usually is a shell script, and we have to 28# itself usually is a shell script, and we have to
28# bypass the script under certain circumstances) 29# bypass the script under certain circumstances);
30# for Cabal, we add an empty global package config file,
31# because for some reason the global package file
32# must be specified
29ghc-getghcpkgbin() { 33ghc-getghcpkgbin() {
34 if ghc-cabal; then
35 echo '[]' > "${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 cabalversion
62 if ghc-cabal; then
63 # We ask portage, not ghc, so that we only pick up
64 # portage-installed cabal versions.
65 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
66 echo "Cabal-${cabalversion}"
67 else
68 # older ghc's don't support package versioning
69 echo Cabal
70 fi
71}
72
73# check if a standalone Cabal version is available for the
74# currently used ghc; takes minimal version of Cabal as
75# an optional argument
76ghc-sanecabal() {
77 local f
78 local version
79 if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
80 for f in $(ghc-confdir)/cabal-*; do
81 [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
82 done
83 return 1
84}
85
86# checks if ghc and ghc-bin are installed in the same version
87# (if they're both installed); if this is not the case, we
88# unfortunately cannot trust portage's dependency resolution
89ghc-saneghc() {
90 local ghcversion
91 local ghcbinversion
92 if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then
93 return
94 fi
95 if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then
96 ghcversion="$(ghc-extractportageversion dev-lang/ghc)"
97 ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)"
98 if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then
99 return 1
100 fi
101 fi
102 return
103}
104
105# extract the version of a portage-installed package
106ghc-extractportageversion() {
107 local pkg
108 local version
109 pkg="$(best_version $1)"
110 version="${pkg#$1-}"
111 version="${version%-r*}"
112 version="${version%_pre*}"
113 echo "${version}"
36} 114}
37 115
38# returns the library directory 116# returns the library directory
117_GHC_LIBDIR_CACHE=""
39ghc-libdir() { 118ghc-libdir() {
40 $(ghc-getghc) --print-libdir 119 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
120 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
121 fi
122 echo "${_GHC_LIBDIR_CACHE}"
41} 123}
42 124
43# returns the (Gentoo) library configuration directory 125# returns the (Gentoo) library configuration directory
44ghc-confdir() { 126ghc-confdir() {
45 echo $(ghc-libdir)/gentoo 127 echo "$(ghc-libdir)/gentoo"
46} 128}
47 129
48# returns the name of the local (package-specific) 130# returns the name of the local (package-specific)
49# package configuration file 131# package configuration file
50ghc-localpkgconf() { 132ghc-localpkgconf() {
51 echo "${PF}.conf" 133 echo "${PF}.conf"
52} 134}
53 135
136# make a ghci foo.o file from a libfoo.a file
137ghc-makeghcilib() {
138 local outfile
139 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
140 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
141}
142
143# tests if a ghc package exists
144ghc-package-exists() {
145 $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
146}
147
54# creates an empty local (package-specific) package 148# creates a local (package-specific) package
55# configuration file 149# configuration file; the arguments should be
150# uninstalled package description files, each
151# containing a single package description; if
152# no arguments are given, the resulting file is
153# empty
56ghc-setup-pkg() { 154ghc-setup-pkg() {
155 local localpkgconf
156 localpkgconf="${S}/$(ghc-localpkgconf)"
57 echo '[]' > ${S}/$(ghc-localpkgconf) 157 echo '[]' > "${localpkgconf}"
158 for pkg in $*; do
159 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
160 < "${pkg}" || die "failed to register ${pkg}"
161 done
162}
163
164# fixes the library and import directories path
165# of the package configuration file
166ghc-fixlibpath() {
167 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
168 if [[ -n "$2" ]]; then
169 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
170 fi
58} 171}
59 172
60# moves the local (package-specific) package configuration 173# moves the local (package-specific) package configuration
61# file to its final destination 174# file to its final destination
62ghc-install-pkg() { 175ghc-install-pkg() {
63 mkdir -p ${D}/$(ghc-confdir) 176 mkdir -p "${D}/$(ghc-confdir)"
64 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \ 177 cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
65 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf) 178 > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
66} 179}
67 180
68# registers all packages in the local (package-specific) 181# registers all packages in the local (package-specific)
69# package configuration file 182# package configuration file
70ghc-register-pkg() { 183ghc-register-pkg() {
71 local localpkgconf 184 local localpkgconf
72 localpkgconf=$(ghc-confdir)/$1 185 localpkgconf="$(ghc-confdir)/$1"
186 if [[ -f "${localpkgconf}" ]]; then
73 for pkg in $(ghc-listpkg ${localpkgconf}); do 187 for pkg in $(ghc-listpkg "${localpkgconf}"); do
74 einfo "Registering ${pkg} ..." 188 ebegin "Registering ${pkg} "
75 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \ 189 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
76 | $(ghc-getghcpkg) -u --auto-ghci-libs --force 190 | $(ghc-getghcpkg) -u --force > /dev/null
191 eend $?
77 done 192 done
193 fi
78} 194}
79 195
80# re-adds all available .conf files to the global 196# re-adds all available .conf files to the global
81# package conf file, to be used on a ghc reinstallation 197# package conf file, to be used on a ghc reinstallation
82ghc-reregister() { 198ghc-reregister() {
83 einfo "Re-adding packages ..." 199 einfo "Re-adding packages (may cause several harmless warnings) ..."
84 ewarn "This may cause several warnings, but they should be harmless." 200 if [ -d "$(ghc-confdir)" ]; then
85 pushd $(ghc-confdir) 201 pushd "$(ghc-confdir)" > /dev/null
86 for conf in *.conf; do 202 for conf in *.conf; do
87 einfo "Processing ${conf} ..." 203# einfo "Processing ${conf} ..."
88 ghc-register-pkg ${conf} 204 ghc-register-pkg "${conf}"
89 done 205 done
90 popd 206 popd > /dev/null
207 fi
91} 208}
92 209
93# unregisters ... 210# unregisters a package configuration file
211# protected are all packages that are still contained in
212# another package configuration file
94ghc-unregister-pkg() { 213ghc-unregister-pkg() {
95 local localpkgconf 214 local localpkgconf
215 local i
216 local pkg
217 local protected
96 localpkgconf=$(ghc-confdir)/$1 218 localpkgconf="$(ghc-confdir)/$1"
219
220 for i in $(ghc-confdir)/*.conf; do
221 [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
222 done
223 # protected now contains the packages that cannot be unregistered yet
224
225 if [[ -f "${localpkgconf}" ]]; then
97 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do 226 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
227 if $(ghc-elem "${pkg}" "${protected}"); then
228 einfo "Package ${pkg} is protected."
229 elif ! ghc-package-exists "${pkg}"; then
230 :
231 # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
232 else
98 einfo "Unregistering ${pkg} ..." 233 ebegin "Unregistering ${pkg} "
99 $(ghc-getghcpkg) -r ${pkg} --force 234 $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
235 eend $?
236 fi
100 done 237 done
238 fi
101} 239}
102 240
103# help-function: reverse a list 241# help-function: reverse a list
104ghc-reverse() { 242ghc-reverse() {
105 local result 243 local result
244 local i
106 for i in $1; do 245 for i in $1; do
107 result="${i} ${result}" 246 result="${i} ${result}"
108 done 247 done
109 echo ${result} 248 echo "${result}"
249}
250
251# help-function: element-check
252ghc-elem() {
253 local i
254 for i in $2; do
255 [[ "$1" == "${i}" ]] && return 0
256 done
257 return 1
110} 258}
111 259
112# show the packages in a package configuration file 260# show the packages in a package configuration file
113ghc-listpkg() { 261ghc-listpkg() {
262 local ghcpkgcall
263 local i
264 for i in $*; do
265 if ghc-cabal; then
266 echo $($(ghc-getghcpkg) list -f "${i}") \
267 | sed \
268 -e "s|^.*${i}:\([^:]*\).*$|\1|" \
269 -e "s|/.*$||" \
270 -e "s|,| |g" -e "s|[()]||g"
271 else
114 [ -f $1 ] && echo $($(ghc-getghcpkgbin) -l -f $1) \ 272 echo $($(ghc-getghcpkgbin) -l -f "${i}") \
115 | cut -f2 -d':' \ 273 | cut -f2 -d':' \
116 | sed 's:,: :g' 274 | sed 's:,: :g'
275 fi
276 done
277}
278
279# exported function: check if we have a consistent ghc installation
280ghc-package_pkg_setup() {
281 if ! ghc-saneghc; then
282 eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
283 eerror "installed. Portage currently cannot work correctly with this setup."
284 eerror "There are several possibilities to work around this problem:"
285 eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
286 eerror "(2) Unmerge ghc-bin."
287 eerror "(3) Unmerge ghc."
288 eerror "You probably want option 1 or 2."
289 die "Inconsistent versions of ghc and ghc-bin."
290 fi
117} 291}
118 292
119# exported function: registers the package-specific package 293# exported function: registers the package-specific package
120# configuration file 294# configuration file
121ghc-package_pkg_postinst() { 295ghc-package_pkg_postinst() {
122 ghc-register-pkg $(ghc-localpkgconf) 296 ghc-register-pkg "$(ghc-localpkgconf)"
123} 297}
124 298
125# exported function: unregisters the package-specific 299# exported function: unregisters the package-specific package
126# package configuration file, under the condition that 300# configuration file; a package contained therein is unregistered
127# after removal, no other instances of the package will 301# only if it the same package is not also contained in another
128# be left (necessary check because ghc packages are not 302# package configuration file ...
129# versioned)
130ghc-package_pkg_prerm() { 303ghc-package_pkg_prerm() {
131 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
132 || ghc-unregister-pkg $(ghc-localpkgconf) 304 ghc-unregister-pkg "$(ghc-localpkgconf)"
133} 305}
134 306
135EXPORT_FUNCTIONS pkg_postinst pkg_prerm 307EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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