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Revision 1.29 - (hide annotations) (download)
Sun Mar 13 20:12:13 2011 UTC (3 years, 9 months ago) by slyfox
Branch: MAIN
Changes since 1.28: +66 -13 lines
Added EPREFIX support, added documentation stubs.

1 slyfox 1.29 # Copyright 1999-2011 Gentoo Foundation
2 kosmikus 1.1 # Distributed under the terms of the GNU General Public License v2
3 slyfox 1.29 # $Header: /var/cvsroot/gentoo-x86/eclass/ghc-package.eclass,v 1.9 2005/04/08 01:13:39 araujo Exp $
4 kosmikus 1.1 #
5 slyfox 1.29 # @ECLASS: ghc-package.eclass
6     # @MAINTAINER:
7     # "Gentoo's Haskell Language team" <haskell@gentoo.org>
8 kosmikus 1.1 #
9 slyfox 1.29 # Original Author: Andres Loeh <kosmikus@gentoo.org>
10     #
11     # @BLURB: This eclass helps with the Glasgow Haskell Compiler's package configuration utility.
12     # @DESCRIPTION:
13     # Helper eclass to handle ghc installation/upgrade/deinstallation process.
14 kosmikus 1.1
15 kosmikus 1.6 inherit versionator
16    
17 slyfox 1.29 # @FUNCTION: ghc-getghc
18     # @DESCRIPTION:
19 kosmikus 1.1 # returns the name of the ghc executable
20     ghc-getghc() {
21 kosmikus 1.22 type -P ghc
22 kosmikus 1.1 }
23    
24 slyfox 1.29 # @FUNCTION: ghc-getghcpkg
25     # @DESCRIPTION:
26     # Internal function determines returns the name of the ghc-pkg executable
27 kosmikus 1.1 ghc-getghcpkg() {
28 kosmikus 1.22 type -P ghc-pkg
29 kosmikus 1.1 }
30    
31 slyfox 1.29 # @FUNCTION: ghc-getghcpkgbin
32     # @DESCRIPTION:
33 kosmikus 1.1 # returns the name of the ghc-pkg binary (ghc-pkg
34     # itself usually is a shell script, and we have to
35 kosmikus 1.6 # bypass the script under certain circumstances);
36 kosmikus 1.15 # for Cabal, we add an empty global package config file,
37     # because for some reason the global package file
38     # must be specified
39 kosmikus 1.1 ghc-getghcpkgbin() {
40 kolmodin 1.27 if version_is_at_least "6.10" "$(ghc-version)"; then
41     # the ghc-pkg executable changed name in ghc 6.10, as it no longer needs
42     # the wrapper script with the static flags
43     echo '[]' > "${T}/empty.conf"
44     echo "$(ghc-libdir)/ghc-pkg" "--global-conf=${T}/empty.conf"
45     elif ghc-cabal; then
46 kosmikus 1.15 echo '[]' > "${T}/empty.conf"
47     echo "$(ghc-libdir)/ghc-pkg.bin" "--global-conf=${T}/empty.conf"
48 kosmikus 1.6 else
49 kosmikus 1.15 echo "$(ghc-libdir)/ghc-pkg.bin"
50 kosmikus 1.6 fi
51 kosmikus 1.1 }
52    
53 slyfox 1.29 # @FUNCTION: ghc-version
54     # @DESCRIPTION:
55 kosmikus 1.1 # returns the version of ghc
56 kosmikus 1.6 _GHC_VERSION_CACHE=""
57 kosmikus 1.1 ghc-version() {
58 kosmikus 1.6 if [[ -z "${_GHC_VERSION_CACHE}" ]]; then
59 dcoutts 1.16 _GHC_VERSION_CACHE="$($(ghc-getghc) --numeric-version)"
60 kosmikus 1.6 fi
61     echo "${_GHC_VERSION_CACHE}"
62     }
63    
64 slyfox 1.29 # @FUNCTION: ghc-cabal
65     # @DESCRIPTION:
66 kosmikus 1.15 # this function can be used to determine if ghc itself
67     # uses the Cabal package format; it has nothing to do
68     # with the Cabal libraries ... ghc uses the Cabal package
69     # format since version 6.4
70 kosmikus 1.6 ghc-cabal() {
71     version_is_at_least "6.4" "$(ghc-version)"
72 kosmikus 1.1 }
73    
74 slyfox 1.29 # @FUNCTION: ghc-bestcabalversion
75     # @DESCRIPTION:
76 kosmikus 1.15 # return the best version of the Cabal library that is available
77     ghc-bestcabalversion() {
78     local cabalversion
79     if ghc-cabal; then
80 dcoutts 1.19 # We ask portage, not ghc, so that we only pick up
81     # portage-installed cabal versions.
82 dcoutts 1.23 cabalversion="$(ghc-extractportageversion dev-haskell/cabal)"
83 kosmikus 1.15 echo "Cabal-${cabalversion}"
84     else
85     # older ghc's don't support package versioning
86     echo Cabal
87     fi
88     }
89    
90 slyfox 1.29 # @FUNCTION: ghc-sanecabal
91     # @DESCRIPTION:
92 kosmikus 1.15 # check if a standalone Cabal version is available for the
93     # currently used ghc; takes minimal version of Cabal as
94     # an optional argument
95     ghc-sanecabal() {
96     local f
97     local version
98     if [[ -z "$1" ]]; then version="1.0.1"; else version="$1"; fi
99     for f in $(ghc-confdir)/cabal-*; do
100     [[ -f "${f}" ]] && version_is_at_least "${version}" "${f#*cabal-}" && return
101     done
102     return 1
103     }
104    
105 slyfox 1.29 # @FUNCTION: ghc-saneghc
106     # @DESCRIPTION:
107 dcoutts 1.23 # checks if ghc and ghc-bin are installed in the same version
108 swegener 1.26 # (if they're both installed); if this is not the case, we
109 dcoutts 1.23 # unfortunately cannot trust portage's dependency resolution
110     ghc-saneghc() {
111     local ghcversion
112     local ghcbinversion
113     if [[ "${PN}" == "ghc" || "${PN}" == "ghc-bin" ]]; then
114     return
115     fi
116     if has_version dev-lang/ghc && has_version dev-lang/ghc-bin; then
117     ghcversion="$(ghc-extractportageversion dev-lang/ghc)"
118     ghcbinversion="$(ghc-extractportageversion dev-lang/ghc-bin)"
119     if [[ "${ghcversion}" != "${ghcbinversion}" ]]; then
120     return 1
121     fi
122     fi
123     return
124     }
125    
126 slyfox 1.29 # @FUNCTION: ghc-extractportageversion
127     # @DESCRIPTION:
128 dcoutts 1.23 # extract the version of a portage-installed package
129     ghc-extractportageversion() {
130     local pkg
131     local version
132     pkg="$(best_version $1)"
133     version="${pkg#$1-}"
134     version="${version%-r*}"
135     version="${version%_pre*}"
136     echo "${version}"
137     }
138    
139 slyfox 1.29 # @FUNCTION: ghc-libdir
140     # @DESCRIPTION:
141 kosmikus 1.1 # returns the library directory
142 kosmikus 1.6 _GHC_LIBDIR_CACHE=""
143 kosmikus 1.1 ghc-libdir() {
144 kosmikus 1.6 if [[ -z "${_GHC_LIBDIR_CACHE}" ]]; then
145     _GHC_LIBDIR_CACHE="$($(ghc-getghc) --print-libdir)"
146     fi
147     echo "${_GHC_LIBDIR_CACHE}"
148 kosmikus 1.1 }
149    
150 slyfox 1.29 # @FUNCTION: ghc-confdir
151     # @DESCRIPTION:
152 kosmikus 1.1 # returns the (Gentoo) library configuration directory
153     ghc-confdir() {
154 kosmikus 1.15 echo "$(ghc-libdir)/gentoo"
155 kosmikus 1.1 }
156    
157 slyfox 1.29 # @FUNCTION: ghc-localpkgconf
158     # @DESCRIPTION:
159 kosmikus 1.1 # returns the name of the local (package-specific)
160     # package configuration file
161     ghc-localpkgconf() {
162     echo "${PF}.conf"
163     }
164    
165 slyfox 1.29 # @FUNCTION: ghc-makeghcilib
166     # @DESCRIPTION:
167 kosmikus 1.3 # make a ghci foo.o file from a libfoo.a file
168     ghc-makeghcilib() {
169     local outfile
170     outfile="$(dirname $1)/$(basename $1 | sed 's:^lib\?\(.*\)\.a$:\1.o:')"
171 kosmikus 1.15 ld --relocatable --discard-all --output="${outfile}" --whole-archive "$1"
172     }
173    
174 slyfox 1.29 # @FUNCTION: ghc-makeghcilib
175     # @DESCRIPTION:
176 kosmikus 1.15 # tests if a ghc package exists
177     ghc-package-exists() {
178 kolmodin 1.27 local describe_flag
179     if version_is_at_least "6.4" "$(ghc-version)"; then
180     describe_flag="describe"
181     else
182     describe_flag="--show-package"
183     fi
184    
185     $(ghc-getghcpkg) "${describe_flag}" "$1" > /dev/null 2>&1
186 kosmikus 1.3 }
187    
188 slyfox 1.29 # @FUNCTION: ghc-setup-pkg
189     # @DESCRIPTION:
190 kosmikus 1.3 # creates a local (package-specific) package
191     # configuration file; the arguments should be
192     # uninstalled package description files, each
193     # containing a single package description; if
194     # no arguments are given, the resulting file is
195     # empty
196 kosmikus 1.1 ghc-setup-pkg() {
197 kosmikus 1.3 local localpkgconf
198     localpkgconf="${S}/$(ghc-localpkgconf)"
199 kosmikus 1.15 echo '[]' > "${localpkgconf}"
200 kolmodin 1.27 local update_flag
201     if version_is_at_least "6.4" "$(ghc-version)"; then
202     update_flag="update -"
203     else
204     update_flag="--update-package"
205     fi
206 dcoutts 1.10 for pkg in $*; do
207 kolmodin 1.27 $(ghc-getghcpkgbin) -f "${localpkgconf}" ${update_flag} --force \
208 kosmikus 1.15 < "${pkg}" || die "failed to register ${pkg}"
209 kosmikus 1.3 done
210 kosmikus 1.1 }
211    
212 slyfox 1.29 # @FUNCTION: ghc-fixlibpath
213     # @DESCRIPTION:
214 araujo 1.9 # fixes the library and import directories path
215     # of the package configuration file
216     ghc-fixlibpath() {
217 kosmikus 1.15 sed -i "s|$1|$(ghc-libdir)|g" "${S}/$(ghc-localpkgconf)"
218 araujo 1.9 if [[ -n "$2" ]]; then
219 kosmikus 1.15 sed -i "s|$2|$(ghc-libdir)/imports|g" "${S}/$(ghc-localpkgconf)"
220 araujo 1.9 fi
221     }
222    
223 slyfox 1.29 # @FUNCTION: ghc-install-pkg
224     # @DESCRIPTION:
225 kosmikus 1.1 # moves the local (package-specific) package configuration
226     # file to its final destination
227     ghc-install-pkg() {
228 kosmikus 1.15 mkdir -p "${D}/$(ghc-confdir)"
229     cat "${S}/$(ghc-localpkgconf)" | sed "s|${D}||g" \
230     > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
231 kosmikus 1.1 }
232    
233 slyfox 1.29 # @FUNCTION: ghc-register-pkg
234     # @DESCRIPTION:
235 kosmikus 1.1 # registers all packages in the local (package-specific)
236     # package configuration file
237     ghc-register-pkg() {
238     local localpkgconf
239 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
240 kolmodin 1.27 local update_flag
241     local describe_flag
242     if version_is_at_least "6.4" "$(ghc-version)"; then
243     update_flag="update -"
244     describe_flag="describe"
245     else
246     update_flag="--update-package"
247     describe_flag="--show-package"
248     fi
249 kosmikus 1.15 if [[ -f "${localpkgconf}" ]]; then
250     for pkg in $(ghc-listpkg "${localpkgconf}"); do
251 kosmikus 1.8 ebegin "Registering ${pkg} "
252 kolmodin 1.27 $(ghc-getghcpkgbin) -f "${localpkgconf}" "${describe_flag}" "${pkg}" \
253     | $(ghc-getghcpkg) ${update_flag} --force > /dev/null
254 kosmikus 1.8 eend $?
255 kosmikus 1.7 done
256     fi
257 kosmikus 1.1 }
258    
259 slyfox 1.29 # @FUNCTION: ghc-reregister
260     # @DESCRIPTION:
261 kosmikus 1.1 # re-adds all available .conf files to the global
262     # package conf file, to be used on a ghc reinstallation
263     ghc-reregister() {
264 slyfox 1.29 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
265 kosmikus 1.15 einfo "Re-adding packages (may cause several harmless warnings) ..."
266 slyfox 1.29 PATH="${EPREFIX}/usr/bin:${PATH}" CONFDIR="$(ghc-confdir)"
267 kolmodin 1.27 if [ -d "${CONFDIR}" ]; then
268     pushd "${CONFDIR}" > /dev/null
269 kosmikus 1.5 for conf in *.conf; do
270 slyfox 1.29 PATH="${EPREFIX}/usr/bin:${PATH}" ghc-register-pkg "${conf}"
271 kosmikus 1.5 done
272 kosmikus 1.8 popd > /dev/null
273 kosmikus 1.5 fi
274 kosmikus 1.1 }
275    
276 slyfox 1.29 # @FUNCTION: ghc-unregister-pkg
277     # @DESCRIPTION:
278 kosmikus 1.15 # unregisters a package configuration file
279     # protected are all packages that are still contained in
280     # another package configuration file
281 kosmikus 1.1 ghc-unregister-pkg() {
282     local localpkgconf
283 kosmikus 1.15 local i
284     local pkg
285     local protected
286 kolmodin 1.27 local unregister_flag
287 kosmikus 1.3 localpkgconf="$(ghc-confdir)/$1"
288 kosmikus 1.15
289 kolmodin 1.27 if version_is_at_least "6.4" "$(ghc-version)"; then
290     unregister_flag="unregister"
291     else
292     unregister_flag="--remove-package"
293     fi
294    
295 kosmikus 1.15 for i in $(ghc-confdir)/*.conf; do
296     [[ "${i}" != "${localpkgconf}" ]] && protected="${protected} $(ghc-listpkg ${i})"
297     done
298     # protected now contains the packages that cannot be unregistered yet
299    
300     if [[ -f "${localpkgconf}" ]]; then
301 kosmikus 1.7 for pkg in $(ghc-reverse "$(ghc-listpkg ${localpkgconf})"); do
302 kosmikus 1.15 if $(ghc-elem "${pkg}" "${protected}"); then
303     einfo "Package ${pkg} is protected."
304     elif ! ghc-package-exists "${pkg}"; then
305     :
306     # einfo "Package ${pkg} is not installed for ghc-$(ghc-version)."
307     else
308     ebegin "Unregistering ${pkg} "
309 kolmodin 1.27 $(ghc-getghcpkg) "${unregister_flag}" "${pkg}" --force > /dev/null
310 kosmikus 1.15 eend $?
311     fi
312 kosmikus 1.7 done
313     fi
314 kosmikus 1.1 }
315    
316 slyfox 1.29 # @FUNCTION: ghc-reverse
317     # @DESCRIPTION:
318 kosmikus 1.1 # help-function: reverse a list
319     ghc-reverse() {
320     local result
321 kosmikus 1.15 local i
322 kosmikus 1.1 for i in $1; do
323     result="${i} ${result}"
324     done
325 kosmikus 1.15 echo "${result}"
326     }
327    
328 slyfox 1.29 # @FUNCTION: ghc-elem
329     # @DESCRIPTION:
330 kosmikus 1.15 # help-function: element-check
331     ghc-elem() {
332     local i
333     for i in $2; do
334     [[ "$1" == "${i}" ]] && return 0
335     done
336     return 1
337 kosmikus 1.1 }
338    
339 slyfox 1.29 # @FUNCTION: ghc-listpkg
340     # @DESCRIPTION:
341 kosmikus 1.1 # show the packages in a package configuration file
342     ghc-listpkg() {
343 kosmikus 1.6 local ghcpkgcall
344 kosmikus 1.15 local i
345 kolmodin 1.28 local extra_flags
346     if version_is_at_least '6.12.3' "$(ghc-version)"; then
347     extra_flags="${extra_flags} -v0"
348     fi
349 kosmikus 1.15 for i in $*; do
350     if ghc-cabal; then
351 kolmodin 1.28 echo $($(ghc-getghcpkg) list ${extra_flags} -f "${i}") \
352 kosmikus 1.15 | sed \
353     -e "s|^.*${i}:\([^:]*\).*$|\1|" \
354     -e "s|/.*$||" \
355 dcoutts 1.25 -e "s|,| |g" -e "s|[(){}]||g"
356 kosmikus 1.15 else
357     echo $($(ghc-getghcpkgbin) -l -f "${i}") \
358     | cut -f2 -d':' \
359     | sed 's:,: :g'
360     fi
361     done
362 kosmikus 1.1 }
363    
364 slyfox 1.29 # @FUNCTION: ghc-package_pkg_setup
365     # @DESCRIPTION:
366 kolmodin 1.21 # exported function: check if we have a consistent ghc installation
367     ghc-package_pkg_setup() {
368 dcoutts 1.23 if ! ghc-saneghc; then
369     eerror "You have inconsistent versions of dev-lang/ghc and dev-lang/ghc-bin"
370     eerror "installed. Portage currently cannot work correctly with this setup."
371     eerror "There are several possibilities to work around this problem:"
372     eerror "(1) Up/downgrade ghc-bin to the same version as ghc."
373     eerror "(2) Unmerge ghc-bin."
374     eerror "(3) Unmerge ghc."
375     eerror "You probably want option 1 or 2."
376     die "Inconsistent versions of ghc and ghc-bin."
377     fi
378 kolmodin 1.21 }
379    
380 slyfox 1.29 # @FUNCTION: ghc-package_pkg_postinst
381     # @DESCRIPTION:
382 kosmikus 1.1 # exported function: registers the package-specific package
383     # configuration file
384     ghc-package_pkg_postinst() {
385 kosmikus 1.15 ghc-register-pkg "$(ghc-localpkgconf)"
386 kosmikus 1.1 }
387    
388 slyfox 1.29 # @FUNCTION: ghc-package_pkg_prerm
389     # @DESCRIPTION:
390 kosmikus 1.15 # exported function: unregisters the package-specific package
391     # configuration file; a package contained therein is unregistered
392     # only if it the same package is not also contained in another
393     # package configuration file ...
394 kosmikus 1.1 ghc-package_pkg_prerm() {
395 kosmikus 1.15 ghc-unregister-pkg "$(ghc-localpkgconf)"
396 kosmikus 1.1 }
397    
398 kolmodin 1.21 EXPORT_FUNCTIONS pkg_setup pkg_postinst pkg_prerm

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