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Revision 1.17 - (hide annotations) (download)
Thu Jun 15 11:27:38 2006 UTC (8 years, 1 month ago) by dcoutts
Branch: MAIN
Changes since 1.16: +2 -1 lines
Note that the ghc-package eclass is maintaind by the Haskell herd.

1 kosmikus 1.1 # Copyright 1999-2004 Gentoo Foundation
2     # Distributed under the terms of the GNU General Public License v2
3 dcoutts 1.17 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.16 2006/03/01 12:58:01 dcoutts Exp $
4 kosmikus 1.1 #
5     # Author: Andres Loeh <kosmikus@gentoo.org>
6 dcoutts 1.17 # Maintained by: Haskell herd <haskell@gentoo.org>
7 kosmikus 1.1 #
8     # This eclass helps with the Glasgow Haskell Compiler's package
9     # configuration utility.
10    
11 kosmikus 1.6 inherit versionator
12    
13 kosmikus 1.7 # promote /opt/ghc/bin to a better position in the search path
14     PATH="/usr/bin:/opt/ghc/bin:${PATH}"
15 kosmikus 1.1
16     # for later configuration using environment variables/
17     # returns the name of the ghc executable
18     ghc-getghc() {
19     echo "ghc"
20     }
21    
22     # returns the name of the ghc-pkg executable
23     ghc-getghcpkg() {
24     echo "ghc-pkg"
25     }
26    
27     # returns the name of the ghc-pkg binary (ghc-pkg
28     # itself usually is a shell script, and we have to
29 kosmikus 1.6 # bypass the script under certain circumstances);
30 kosmikus 1.15 # for Cabal, we add an empty global package config file,
31     # because for some reason the global package file
32     # must be specified
33 kosmikus 1.1 ghc-getghcpkgbin() {
34 kosmikus 1.6 if ghc-cabal; then
35 kosmikus 1.15 echo '[]' > "${T}/empty.conf"
36     echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
37 kosmikus 1.6 else
38 kosmikus 1.15 echo "$(ghc-libdir)/ghc-pkg.bin"
39 kosmikus 1.6 fi
40 kosmikus 1.1 }
41    
42     # returns the version of ghc
43 kosmikus 1.6 _GHC_VERSION_CACHE=""
44 kosmikus 1.1 ghc-version() {
45 kosmikus 1.6 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
46 dcoutts 1.16 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
47 kosmikus 1.6 fi
48     echo "${_GHC_VERSION_CACHE}"
49     }
50    
51 kosmikus 1.15 # this function can be used to determine if ghc itself
52     # uses the Cabal package format; it has nothing to do
53     # with the Cabal libraries ... ghc uses the Cabal package
54     # format since version 6.4
55 kosmikus 1.6 ghc-cabal() {
56     version_is_at_least "6.4" "$(ghc-version)"
57 kosmikus 1.1 }
58    
59 kosmikus 1.15 # return the best version of the Cabal library that is available
60     ghc-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
85     ghc-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
93     }
94    
95 kosmikus 1.1 # returns the library directory
96 kosmikus 1.6 _GHC_LIBDIR_CACHE=""
97 kosmikus 1.1 ghc-libdir() {
98 kosmikus 1.6 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
99     _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
100     fi
101     echo "${_GHC_LIBDIR_CACHE}"
102 kosmikus 1.1 }
103    
104     # returns the (Gentoo) library configuration directory
105     ghc-confdir() {
106 kosmikus 1.15 echo "$(ghc-libdir)/gentoo"
107 kosmikus 1.1 }
108    
109     # returns the name of the local (package-specific)
110     # package configuration file
111     ghc-localpkgconf() {
112     echo "${PF}.conf"
113     }
114    
115 kosmikus 1.3 # make a ghci foo.o file from a libfoo.a file
116     ghc-makeghcilib() {
117     local outfile
118     outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
119 kosmikus 1.15 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
120     }
121    
122     # tests if a ghc package exists
123     ghc-package-exists() {
124     $(ghc-getghcpkg) -s "$1" > /dev/null 2>&1
125 kosmikus 1.3 }
126    
127     # creates a local (package-specific) package
128     # configuration file; the arguments should be
129     # uninstalled package description files, each
130     # containing a single package description; if
131     # no arguments are given, the resulting file is
132     # empty
133 kosmikus 1.1 ghc-setup-pkg() {
134 kosmikus 1.3 local localpkgconf
135     localpkgconf="${S}/$(ghc-localpkgconf)"
136 kosmikus 1.15 echo '[]' > "${localpkgconf}"
137 dcoutts 1.10 for pkg in $*; do
138 kosmikus 1.15 $(ghc-getghcpkgbin) -f "${localpkgconf}" -u --force \
139     < "${pkg}" || die "failed to register ${pkg}"
140 kosmikus 1.3 done
141 kosmikus 1.1 }
142    
143 araujo 1.9 # fixes the library and import directories path
144     # of the package configuration file
145     ghc-fixlibpath() {
146 kosmikus 1.15 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
147 araujo 1.9 if [[ -n "$2" ]]; then
148 kosmikus 1.15 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
149 araujo 1.9 fi
150     }
151    
152 kosmikus 1.1 # moves the local (package-specific) package configuration
153     # file to its final destination
154     ghc-install-pkg() {
155 kosmikus 1.15 mkdir -p "${D}/$(ghc-confdir)"
156     cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
157     > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
158 kosmikus 1.1 }
159    
160     # registers all packages in the local (package-specific)
161     # package configuration file
162     ghc-register-pkg() {
163     local localpkgconf
164 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
165 kosmikus 1.15 if [[ -f "${localpkgconf}" ]]; then
166     for pkg in $(ghc-listpkg "${localpkgconf}"); do
167 kosmikus 1.8 ebegin "Registering ${pkg} "
168 kosmikus 1.15 $(ghc-getghcpkgbin) -f "${localpkgconf}" -s "${pkg}" \
169 kosmikus 1.8 | $(ghc-getghcpkg) -u --force > /dev/null
170     eend $?
171 kosmikus 1.7 done
172     fi
173 kosmikus 1.1 }
174    
175     # re-adds all available .conf files to the global
176     # package conf file, to be used on a ghc reinstallation
177     ghc-reregister() {
178 kosmikus 1.15 einfo "Re-adding packages (may cause several harmless warnings) ..."
179 kosmikus 1.5 if [ -d "$(ghc-confdir)" ]; then
180 kosmikus 1.15 pushd "$(ghc-confdir)" > /dev/null
181 kosmikus 1.5 for conf in *.conf; do
182 kosmikus 1.15 # einfo "Processing ${conf} ..."
183     ghc-register-pkg "${conf}"
184 kosmikus 1.5 done
185 kosmikus 1.8 popd > /dev/null
186 kosmikus 1.5 fi
187 kosmikus 1.1 }
188    
189 kosmikus 1.15 # unregisters a package configuration file
190     # protected are all packages that are still contained in
191     # another package configuration file
192 kosmikus 1.1 ghc-unregister-pkg() {
193     local localpkgconf
194 kosmikus 1.15 local i
195     local pkg
196     local protected
197 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
198 kosmikus 1.15
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
205 kosmikus 1.7 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
206 kosmikus 1.15 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
212     ebegin "Unregistering ${pkg} "
213     $(ghc-getghcpkg) -r "${pkg}" --force > /dev/null
214     eend $?
215     fi
216 kosmikus 1.7 done
217     fi
218 kosmikus 1.1 }
219    
220     # help-function: reverse a list
221     ghc-reverse() {
222     local result
223 kosmikus 1.15 local i
224 kosmikus 1.1 for i in $1; do
225     result="${i} ${result}"
226     done
227 kosmikus 1.15 echo "${result}"
228     }
229    
230     # help-function: element-check
231     ghc-elem() {
232     local i
233     for i in $2; do
234     [[ "$1" == "${i}" ]] && return 0
235     done
236     return 1
237 kosmikus 1.1 }
238    
239     # show the packages in a package configuration file
240     ghc-listpkg() {
241 kosmikus 1.6 local ghcpkgcall
242 kosmikus 1.15 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
251     echo $($(ghc-getghcpkgbin) -l -f "${i}") \
252     | cut -f2 -d':' \
253     | sed 's:,: :g'
254     fi
255     done
256 kosmikus 1.1 }
257    
258     # exported function: registers the package-specific package
259     # configuration file
260     ghc-package_pkg_postinst() {
261 kosmikus 1.15 ghc-register-pkg "$(ghc-localpkgconf)"
262 kosmikus 1.1 }
263    
264 kosmikus 1.15 # exported function: unregisters the package-specific package
265     # configuration file; a package contained therein is unregistered
266     # only if it the same package is not also contained in another
267     # package configuration file ...
268 kosmikus 1.1 ghc-package_pkg_prerm() {
269 kosmikus 1.15 ghc-unregister-pkg "$(ghc-localpkgconf)"
270 kosmikus 1.1 }
271    
272     EXPORT_FUNCTIONS pkg_postinst pkg_prerm

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