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Revision 1.7 - (show annotations) (download)
Wed Mar 23 13:55:06 2005 UTC (9 years, 9 months ago) by kosmikus
Branch: MAIN
Changes since 1.6: +16 -11 lines
make ghc-package work correctly with ebuilds that don't add own packages
give ghc binary distributions in /opt/ghc/bin higher priority than /usr/local

1 # Copyright 1999-2004 Gentoo Foundation
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 $
4 #
5 # Author: Andres Loeh <kosmikus@gentoo.org>
6 #
7 # This eclass helps with the Glasgow Haskell Compiler's package
8 # configuration utility.
9
10 inherit versionator
11
12 ECLASS="ghc-package"
13 INHERITED="${INHERITED} ${ECLASS}"
14
15 # promote /opt/ghc/bin to a better position in the search path
16 PATH="/usr/bin:/opt/ghc/bin:${PATH}"
17
18 # for later configuration using environment variables/
19 # returns the name of the ghc executable
20 ghc-getghc() {
21 echo "ghc"
22 }
23
24 # returns the name of the ghc-pkg executable
25 ghc-getghcpkg() {
26 echo "ghc-pkg"
27 }
28
29 # returns the name of the ghc-pkg binary (ghc-pkg
30 # itself usually is a shell script, and we have to
31 # bypass the script under certain circumstances);
32 # for Cabal, we add the global package config file,
33 # because for some reason that's required
34 ghc-getghcpkgbin() {
35 if ghc-cabal; then
36 echo $(ghc-libdir)/"ghc-pkg.bin" "--global-conf=$(ghc-libdir)/package.conf"
37 else
38 echo $(ghc-libdir)/"ghc-pkg.bin"
39 fi
40 }
41
42 # returns the version of ghc
43 _GHC_VERSION_CACHE=""
44 ghc-version() {
45 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 _GHC_VERSION_CACHE="$($(ghc-getghc) --version | sed 's:^.*version ::')"
47 fi
48 echo "${_GHC_VERSION_CACHE}"
49 }
50
51 # returns true for ghc >= 6.4
52 ghc-cabal() {
53 version_is_at_least "6.4" "$(ghc-version)"
54 }
55
56 # returns the library directory
57 _GHC_LIBDIR_CACHE=""
58 ghc-libdir() {
59 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
60 _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
61 fi
62 echo "${_GHC_LIBDIR_CACHE}"
63 }
64
65 # returns the (Gentoo) library configuration directory
66 ghc-confdir() {
67 echo $(ghc-libdir)/gentoo
68 }
69
70 # returns the name of the local (package-specific)
71 # package configuration file
72 ghc-localpkgconf() {
73 echo "${PF}.conf"
74 }
75
76 # make a ghci foo.o file from a libfoo.a file
77 ghc-makeghcilib() {
78 local outfile
79 outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
80 ld --relocatable --discard-all --output="${outfile}" --whole-archive $1
81 }
82
83 # creates a local (package-specific) package
84 # configuration file; the arguments should be
85 # uninstalled package description files, each
86 # containing a single package description; if
87 # no arguments are given, the resulting file is
88 # empty
89 ghc-setup-pkg() {
90 local localpkgconf
91 localpkgconf="${S}/$(ghc-localpkgconf)"
92 echo '[' > ${localpkgconf}
93 while [ -n "$1" ]; do
94 cat "$1" >> ${localpkgconf}
95 shift
96 [ -n "$1" ] && echo ',' >> ${localpkgconf}
97 done
98 echo ']' >> ${localpkgconf}
99 }
100
101 # moves the local (package-specific) package configuration
102 # file to its final destination
103 ghc-install-pkg() {
104 mkdir -p ${D}/$(ghc-confdir)
105 cat ${S}/$(ghc-localpkgconf) | sed "s:${D}::" \
106 > ${D}/$(ghc-confdir)/$(ghc-localpkgconf)
107 }
108
109 # registers all packages in the local (package-specific)
110 # package configuration file
111 ghc-register-pkg() {
112 local localpkgconf
113 localpkgconf="$(ghc-confdir)/$1"
114 if [[ -f ${localpkgconf} ]]; then
115 for pkg in $(ghc-listpkg ${localpkgconf}); do
116 einfo "Registering ${pkg} ..."
117 $(ghc-getghcpkgbin) -f ${localpkgconf} -s ${pkg} \
118 | $(ghc-getghcpkg) -u --force
119 done
120 fi
121 }
122
123 # re-adds all available .conf files to the global
124 # package conf file, to be used on a ghc reinstallation
125 ghc-reregister() {
126 einfo "Re-adding packages ..."
127 ewarn "This may cause several warnings, but they should be harmless."
128 if [ -d "$(ghc-confdir)" ]; then
129 pushd $(ghc-confdir)
130 for conf in *.conf; do
131 einfo "Processing ${conf} ..."
132 ghc-register-pkg ${conf}
133 done
134 popd
135 fi
136 }
137
138 # unregisters ...
139 ghc-unregister-pkg() {
140 local localpkgconf
141 localpkgconf="$(ghc-confdir)/$1"
142 if [[ -f ${localpkgconf} ]]; then
143 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
144 einfo "Unregistering ${pkg} ..."
145 $(ghc-getghcpkg) -r ${pkg} --force
146 done
147 fi
148 }
149
150 # help-function: reverse a list
151 ghc-reverse() {
152 local result
153 for i in $1; do
154 result="${i} ${result}"
155 done
156 echo ${result}
157 }
158
159 # show the packages in a package configuration file
160 ghc-listpkg() {
161 local ghcpkgcall
162 if ghc-cabal; then
163 echo $($(ghc-getghcpkg) list -f $1) \
164 | sed \
165 -e "s|^.*${f}:\([^:]*\).*$|\1|" \
166 -e "s|/.*$||" \
167 -e "s|,| |g" -e "s|[()]||g"
168 else
169 echo $($(ghc-getghcpkgbin) -l -f $1) \
170 | cut -f2 -d':' \
171 | sed 's:,: :g'
172 fi
173 }
174
175 # exported function: registers the package-specific package
176 # configuration file
177 ghc-package_pkg_postinst() {
178 ghc-register-pkg $(ghc-localpkgconf)
179 }
180
181 # exported function: unregisters the package-specific
182 # package configuration file, under the condition that
183 # after removal, no other instances of the package will
184 # be left (necessary check because ghc packages are not
185 # versioned)
186 ghc-package_pkg_prerm() {
187 has_version "<${CATEGORY}/${PF}" || has_version ">${CATEGORY}/${PF}" \
188 || ghc-unregister-pkg $(ghc-localpkgconf)
189 }
190
191 EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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