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Revision 1.33 - (hide annotations) (download)
Sun Jul 8 19:16:46 2012 UTC (2 years, 4 months ago) by slyfox
Branch: MAIN
Changes since 1.32: +21 -2 lines
Allow wildcards in CABAL_CORE_LIB_GHC_PV. Guard against breakage of ghc-shipped libraries.

1 slyfox 1.26 # Copyright 1999-2012 Gentoo Foundation
2 kosmikus 1.1 # Distributed under the terms of the GNU General Public License v2
3 slyfox 1.33 # $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.32 2012/04/19 17:33:19 slyfox Exp $
4 vapier 1.25
5     # @ECLASS: haskell-cabal.eclass
6     # @MAINTAINER:
7     # Haskell herd <haskell@gentoo.org>
8     # @AUTHOR:
9     # Original author: Andres Loeh <kosmikus@gentoo.org>
10     # Original author: Duncan Coutts <dcoutts@gentoo.org>
11     # @BLURB: for packages that make use of the Haskell Common Architecture for Building Applications and Libraries (cabal)
12     # @DESCRIPTION:
13 kosmikus 1.1 # Basic instructions:
14     #
15     # Before inheriting the eclass, set CABAL_FEATURES to
16     # reflect the tools and features that the package makes
17     # use of.
18     #
19     # Currently supported features:
20     # haddock -- for documentation generation
21 kolmodin 1.21 # hscolour -- generation of colourised sources
22 kosmikus 1.1 # alex -- lexer/scanner generator
23     # happy -- parser generator
24     # c2hs -- C interface generator
25     # cpphs -- C preprocessor clone written in Haskell
26     # profile -- if package supports to build profiling-enabled libraries
27     # bootstrap -- only used for the cabal package itself
28 dcoutts 1.3 # bin -- the package installs binaries
29     # lib -- the package installs libraries
30 kolmodin 1.16 # nocabaldep -- don't add dependency on cabal.
31 slyfox 1.23 # only used for packages that _must_ not pull the dependency
32     # on cabal, but still use this eclass (e.g. haskell-updater).
33 slyfox 1.32 # test-suite -- add support for cabal test-suites (introduced in Cabal-1.8)
34 kosmikus 1.1
35 dcoutts 1.11 inherit ghc-package multilib
36 kosmikus 1.1
37 slyfox 1.24 # @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS
38     # @DESCRIPTION:
39     # User-specified additional parameters passed to 'setup configure'.
40     # example: /etc/make.conf: CABAL_EXTRA_CONFIGURE_FLAGS=--enable-shared
41     : ${CABAL_EXTRA_CONFIGURE_FLAGS:=}
42    
43 slyfox 1.27 # @ECLASS-VARIABLE: CABAL_EXTRA_BUILD_FLAGS
44     # @DESCRIPTION:
45     # User-specified additional parameters passed to 'setup build'.
46     # example: /etc/make.conf: CABAL_EXTRA_BUILD_FLAGS=-v
47     : ${CABAL_EXTRA_BUILD_FLAGS:=}
48    
49 slyfox 1.24 # @ECLASS-VARIABLE: GHC_BOOTSTRAP_FLAGS
50     # @DESCRIPTION:
51     # User-specified additional parameters for ghc when building
52     # _only_ 'setup' binary bootstrap.
53     # example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
54     # linking 'setup' faster.
55     : ${GHC_BOOTSTRAP_FLAGS:=}
56    
57 kolmodin 1.19 HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install"
58    
59     case "${EAPI:-0}" in
60     2|3|4) HASKELL_CABAL_EXPF+=" src_configure" ;;
61     *) ;;
62     esac
63    
64     EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
65 kosmikus 1.1
66     for feature in ${CABAL_FEATURES}; do
67     case ${feature} in
68 kolmodin 1.16 haddock) CABAL_USE_HADDOCK=yes;;
69 kolmodin 1.21 hscolour) CABAL_USE_HSCOLOUR=yes;;
70 slyfox 1.26 hoogle) CABAL_USE_HOOGLE=yes;;
71 kolmodin 1.16 alex) CABAL_USE_ALEX=yes;;
72     happy) CABAL_USE_HAPPY=yes;;
73     c2hs) CABAL_USE_C2HS=yes;;
74     cpphs) CABAL_USE_CPPHS=yes;;
75     profile) CABAL_USE_PROFILE=yes;;
76     bootstrap) CABAL_BOOTSTRAP=yes;;
77     bin) CABAL_HAS_BINARIES=yes;;
78     lib) CABAL_HAS_LIBRARIES=yes;;
79     nocabaldep) CABAL_FROM_GHC=yes;;
80 slyfox 1.32 test-suite) CABAL_TEST_SUITE=yes;;
81 dcoutts 1.3 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
82 kosmikus 1.1 esac
83     done
84    
85     if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
86     IUSE="${IUSE} doc"
87 slyfox 1.28 # don't require depend on itself to build docs.
88     # ebuild bootstraps docs from just built binary
89     [[ ${CATEGORY}/${PN} = "dev-haskell/haddock" ]] || DEPEND="${DEPEND} doc? ( dev-haskell/haddock )"
90 kosmikus 1.1 fi
91    
92 kolmodin 1.21 if [[ -n "${CABAL_USE_HSCOLOUR}" ]]; then
93     IUSE="${IUSE} hscolour"
94     DEPEND="${DEPEND} hscolour? ( dev-haskell/hscolour )"
95     fi
96    
97 kosmikus 1.1 if [[ -n "${CABAL_USE_ALEX}" ]]; then
98     DEPEND="${DEPEND} dev-haskell/alex"
99     fi
100    
101     if [[ -n "${CABAL_USE_HAPPY}" ]]; then
102     DEPEND="${DEPEND} dev-haskell/happy"
103     fi
104    
105     if [[ -n "${CABAL_USE_C2HS}" ]]; then
106     DEPEND="${DEPEND} dev-haskell/c2hs"
107     fi
108    
109     if [[ -n "${CABAL_USE_CPPHS}" ]]; then
110     DEPEND="${DEPEND} dev-haskell/cpphs"
111     fi
112    
113     if [[ -n "${CABAL_USE_PROFILE}" ]]; then
114     IUSE="${IUSE} profile"
115     fi
116    
117 slyfox 1.32 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
118     IUSE="${IUSE} test"
119     fi
120    
121 kosmikus 1.1 # We always use a standalone version of Cabal, rather than the one that comes
122     # with GHC. But of course we can't depend on cabal when building cabal itself.
123 dcoutts 1.14 if [[ -z ${CABAL_MIN_VERSION} ]]; then
124     CABAL_MIN_VERSION=1.1.4
125     fi
126 kolmodin 1.16 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then
127 dcoutts 1.11 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}"
128 kosmikus 1.1 fi
129    
130 dcoutts 1.3 # Libraries require GHC to be installed.
131     if [[ -n "${CABAL_HAS_LIBRARIES}" ]]; then
132 dcoutts 1.11 RDEPEND="${RDEPEND} dev-lang/ghc"
133 dcoutts 1.3 fi
134 kosmikus 1.1
135 dcoutts 1.14 # returns the version of cabal currently in use
136     _CABAL_VERSION_CACHE=""
137     cabal-version() {
138     if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then
139     if [[ "${CABAL_BOOTSTRAP}" ]]; then
140     # We're bootstrapping cabal, so the cabal version is the version
141     # of this package itself.
142     _CABAL_VERSION_CACHE="${PV}"
143 kolmodin 1.17 elif [[ "${CABAL_FROM_GHC}" ]]; then
144 slyfox 1.24 local cabal_package=$(echo "$(ghc-libdir)"/Cabal-*)
145     # /path/to/ghc/Cabal-${VER} -> ${VER}
146     _CABAL_VERSION_CACHE="${cabal_package/*Cabal-/}"
147 dcoutts 1.14 else
148     # We ask portage, not ghc, so that we only pick up
149     # portage-installed cabal versions.
150     _CABAL_VERSION_CACHE="$(ghc-extractportageversion dev-haskell/cabal)"
151     fi
152     fi
153     echo "${_CABAL_VERSION_CACHE}"
154     }
155    
156 kosmikus 1.1 cabal-bootstrap() {
157     local setupmodule
158 dcoutts 1.14 local cabalpackage
159 kosmikus 1.1 if [[ -f "${S}/Setup.lhs" ]]; then
160     setupmodule="${S}/Setup.lhs"
161 slyfox 1.29 elif [[ -f "${S}/Setup.hs" ]]; then
162     setupmodule="${S}/Setup.hs"
163 kosmikus 1.1 else
164 slyfox 1.29 die "No Setup.lhs or Setup.hs found"
165 kosmikus 1.1 fi
166    
167 slyfox 1.31 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
168     eerror "The package dev-haskell/cabal is not correctly installed for"
169     eerror "the currently active version of ghc ($(ghc-version)). Please"
170     eerror "run haskell-updater or re-build dev-haskell/cabal."
171     die "cabal is not correctly installed"
172     fi
173    
174 kosmikus 1.1 # We build the setup program using the latest version of
175     # cabal that we have installed
176 slyfox 1.29 cabalpackage=Cabal-$(cabal-version)
177 dcoutts 1.14 einfo "Using cabal-$(cabal-version)."
178 slyfox 1.24
179     make_setup() {
180 slyfox 1.26 set -- -package "${cabalpackage}" --make "${setupmodule}" \
181 slyfox 1.24 ${GHC_BOOTSTRAP_FLAGS} \
182     "$@" \
183     -o setup
184 slyfox 1.27 echo $(ghc-getghc) ${HCFLAGS} "$@"
185 slyfox 1.26 $(ghc-getghc) "$@"
186 slyfox 1.24 }
187     if $(ghc-supports-shared-libraries); then
188 slyfox 1.30 # # some custom build systems might use external libraries,
189     # # for which we don't have shared libs, so keep static fallback
190     # Disabled '-dynamic' as ghc does not embed RPATH to used extra-libraries:
191     # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
192     # make_setup -dynamic "$@" ||
193     make_setup "$@" || die "compiling ${setupmodule} failed"
194 slyfox 1.24 else
195     make_setup "$@" || die "compiling ${setupmodule} failed"
196     fi
197 kosmikus 1.1 }
198    
199 dcoutts 1.14 cabal-mksetup() {
200     local setupdir
201    
202     if [[ -n $1 ]]; then
203     setupdir=$1
204     else
205     setupdir=${S}
206     fi
207    
208     rm -f "${setupdir}"/Setup.{lhs,hs}
209    
210     echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
211 slyfox 1.29 > $setupdir/Setup.hs || die "failed to create default Setup.hs"
212 dcoutts 1.14 }
213    
214 kolmodin 1.21 cabal-hscolour() {
215 slyfox 1.26 set -- hscolour "$@"
216     echo ./setup "$@"
217     ./setup "$@" || die "setup hscolour failed"
218 kolmodin 1.21 }
219    
220 kosmikus 1.1 cabal-haddock() {
221 slyfox 1.26 set -- haddock "$@"
222     echo ./setup "$@"
223     ./setup "$@" || die "setup haddock failed"
224 kosmikus 1.1 }
225    
226 kolmodin 1.21 cabal-hscolour-haddock() {
227     # --hyperlink-source implies calling 'setup hscolour'
228 slyfox 1.26 set -- haddock --hyperlink-source
229     echo ./setup "$@"
230     ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed"
231 kolmodin 1.21 }
232    
233 kosmikus 1.1 cabal-configure() {
234 slyfox 1.23 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
235    
236 dcoutts 1.14 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
237 slyfox 1.23 cabalconf="${cabalconf} --with-haddock=${EPREFIX}/usr/bin/haddock"
238 dcoutts 1.14 fi
239 kosmikus 1.1 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
240 dcoutts 1.2 cabalconf="${cabalconf} --enable-library-profiling"
241 kosmikus 1.1 fi
242 slyfox 1.23 if [[ -n "${CABAL_USE_ALEX}" ]]; then
243     cabalconf="${cabalconf} --with-alex=${EPREFIX}/usr/bin/alex"
244     fi
245    
246     if [[ -n "${CABAL_USE_HAPPY}" ]]; then
247     cabalconf="${cabalconf} --with-happy=${EPREFIX}/usr/bin/happy"
248     fi
249    
250     if [[ -n "${CABAL_USE_C2HS}" ]]; then
251     cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs"
252     fi
253     if [[ -n "${CABAL_USE_CPPHS}" ]]; then
254     cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs"
255     fi
256 slyfox 1.32 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
257     cabalconf="${cabalconf} $(use_enable test tests)"
258     fi
259 slyfox 1.23
260 slyfox 1.27 local option
261     for option in ${HCFLAGS}
262     do
263     cabalconf+=" --ghc-option=$option"
264     done
265    
266 dcoutts 1.6 # Building GHCi libs on ppc64 causes "TOC overflow".
267     if use ppc64; then
268 dcoutts 1.5 cabalconf="${cabalconf} --disable-library-for-ghci"
269     fi
270 kosmikus 1.1
271 slyfox 1.24 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
272     # so translate LDFLAGS to ghc parameters (without filtering)
273     local flag
274     for flag in $LDFLAGS; do cabalconf="${cabalconf} --ghc-option=-optl$flag"; done
275    
276 slyfox 1.29 # disable executable stripping for the executables, as portage will
277     # strip by itself, and pre-stripping gives a QA warning.
278     # cabal versions previous to 1.4 does not strip executables, and does
279     # not accept the flag.
280     # this fixes numerous bugs, amongst them;
281     # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
282     cabalconf="${cabalconf} --disable-executable-stripping"
283    
284     cabalconf="${cabalconf} --docdir=${EPREFIX}/usr/share/doc/${PF}"
285     # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
286     # it's better if the configure chatter is in the build logs:
287     cabalconf="${cabalconf} --verbose"
288 dcoutts 1.11
289 slyfox 1.24 # We build shared version of our Cabal where ghc ships it's shared
290     # version of it. We will link ./setup as dynamic binary againt Cabal later.
291     [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
292     $(ghc-supports-shared-libraries) && \
293     cabalconf="${cabalconf} --enable-shared"
294    
295 slyfox 1.26 set -- configure \
296 slyfox 1.23 --ghc --prefix="${EPREFIX}"/usr \
297 kosmikus 1.1 --with-compiler="$(ghc-getghc)" \
298     --with-hc-pkg="$(ghc-getghcpkg)" \
299 slyfox 1.23 --prefix="${EPREFIX}"/usr \
300     --libdir="${EPREFIX}"/usr/$(get_libdir) \
301 dcoutts 1.11 --libsubdir=${P}/ghc-$(ghc-version) \
302 slyfox 1.23 --datadir="${EPREFIX}"/usr/share/ \
303 dcoutts 1.11 --datasubdir=${P}/ghc-$(ghc-version) \
304 kosmikus 1.1 ${cabalconf} \
305 kosmikus 1.8 ${CABAL_CONFIGURE_FLAGS} \
306 slyfox 1.24 ${CABAL_EXTRA_CONFIGURE_FLAGS} \
307 slyfox 1.26 "$@"
308     echo ./setup "$@"
309     ./setup "$@" || die "setup configure failed"
310 kosmikus 1.1 }
311    
312     cabal-build() {
313 dcoutts 1.14 unset LANG LC_ALL LC_MESSAGES
314 slyfox 1.27 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@"
315 slyfox 1.26 echo ./setup "$@"
316     ./setup "$@" \
317 kosmikus 1.1 || die "setup build failed"
318     }
319    
320     cabal-copy() {
321 slyfox 1.23 has "${EAPI:-0}" 0 1 2 && ! use prefix && ED=${D}
322    
323 slyfox 1.26 set -- copy --destdir="${D}" "$@"
324     echo ./setup "$@"
325     ./setup "$@" || die "setup copy failed"
326 kosmikus 1.1
327     # cabal is a bit eager about creating dirs,
328     # so remove them if they are empty
329 slyfox 1.23 rmdir "${ED}/usr/bin" 2> /dev/null
330 kosmikus 1.1 }
331    
332     cabal-pkg() {
333 kosmikus 1.9 # This does not actually register since we're using true instead
334 slyfox 1.29 # of ghc-pkg. So it just leaves the .conf file and we can
335 kosmikus 1.1 # register that ourselves (if it exists).
336 dcoutts 1.2
337 dcoutts 1.4 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
338 slyfox 1.29 # Newer cabal can generate a package conf for us:
339     ./setup register --gen-pkg-config="${T}/${P}.conf"
340     ghc-setup-pkg "${T}/${P}.conf"
341     ghc-install-pkg
342 kosmikus 1.1 fi
343     }
344    
345 kolmodin 1.13 # Some cabal libs are bundled along with some versions of ghc
346     # eg filepath-1.0 comes with ghc-6.6.1
347     # by putting CABAL_CORE_LIB_GHC_PV="6.6.1" in an ebuild we are declaring that
348     # when building with this version of ghc, the ebuild is a dummy that is it will
349     # install no files since the package is already included with ghc.
350     # However portage still records the dependency and we can upgrade the package
351     # to a later one that's not included with ghc.
352     # You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
353     cabal-is-dummy-lib() {
354     for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
355 slyfox 1.33 [[ "$(ghc-version)" == ${version} ]] && return 0
356 kolmodin 1.13 done
357     return 1
358     }
359    
360 kosmikus 1.1 # exported function: check if cabal is correctly installed for
361     # the currently active ghc (we cannot guarantee this with portage)
362     haskell-cabal_pkg_setup() {
363 dcoutts 1.4 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
364 slyfox 1.29 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
365 dcoutts 1.4 fi
366 dcoutts 1.3 if [[ -n "${CABAL_UNKNOWN}" ]]; then
367 slyfox 1.29 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
368 dcoutts 1.3 fi
369 kolmodin 1.13 if cabal-is-dummy-lib; then
370     einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
371     fi
372 kosmikus 1.1 }
373    
374 kolmodin 1.19 haskell-cabal_src_configure() {
375 slyfox 1.29 cabal-is-dummy-lib && return
376    
377     pushd "${S}" > /dev/null
378 kolmodin 1.19
379 slyfox 1.29 cabal-bootstrap
380 slyfox 1.22
381 slyfox 1.29 cabal-configure "$@"
382 kolmodin 1.19
383 slyfox 1.29 popd > /dev/null
384 kolmodin 1.19 }
385    
386     # exported function: nice alias
387     cabal_src_configure() {
388     haskell-cabal_src_configure "$@"
389     }
390    
391 kosmikus 1.1 # exported function: cabal-style bootstrap configure and compile
392     cabal_src_compile() {
393 slyfox 1.24 # it's a common mistake when one bumps ebuild to EAPI="2" (and upper)
394     # and forgets to separate src_compile() to src_configure()/src_compile().
395     # Such error leads to default src_configure and we lose all passed flags.
396     if ! has "${EAPI:-0}" 0 1; then
397     local passed_flag
398     for passed_flag in "$@"; do
399     [[ ${passed_flag} == --flags=* ]] && \
400 slyfox 1.29 eqawarn "QA Notice: Cabal option '${passed_flag}' has effect only in src_configure()"
401 slyfox 1.24 done
402     fi
403    
404 slyfox 1.29 cabal-is-dummy-lib && return
405    
406     has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@"
407     cabal-build
408 kosmikus 1.1
409 slyfox 1.29 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
410     if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
411     # hscolour and haddock
412     cabal-hscolour-haddock
413 kolmodin 1.21 else
414 slyfox 1.29 # just haddock
415     cabal-haddock
416     fi
417     else
418     if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
419     # just hscolour
420     cabal-hscolour
421 kolmodin 1.13 fi
422 kosmikus 1.1 fi
423     }
424 kolmodin 1.16
425 kosmikus 1.1 haskell-cabal_src_compile() {
426 kolmodin 1.19 pushd "${S}" > /dev/null
427    
428     cabal_src_compile "$@"
429    
430     popd > /dev/null
431     }
432    
433     haskell-cabal_src_test() {
434     pushd "${S}" > /dev/null
435    
436 kolmodin 1.20 if cabal-is-dummy-lib; then
437     einfo ">>> No tests for dummy library: ${CATEGORY}/${PF}"
438     else
439     einfo ">>> Test phase [cabal test]: ${CATEGORY}/${PF}"
440 slyfox 1.26 set -- test "$@"
441     echo ./setup "$@"
442     ./setup "$@" || die "cabal test failed"
443 kolmodin 1.20 fi
444 kolmodin 1.19
445     popd > /dev/null
446 kosmikus 1.1 }
447    
448     # exported function: cabal-style copy and register
449     cabal_src_install() {
450 slyfox 1.23 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
451    
452 slyfox 1.29 if ! cabal-is-dummy-lib; then
453 kolmodin 1.13 cabal-copy
454     cabal-pkg
455 slyfox 1.29 fi
456 kosmikus 1.1
457 slyfox 1.29 # create a dummy local package conf file for haskell-updater
458     # if it does not exist (dummy libraries and binaries w/o libraries)
459     local ghc_confdir_with_prefix="$(ghc-confdir)"
460     # remove EPREFIX
461     dodir ${ghc_confdir_with_prefix#${EPREFIX}}
462     local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
463     [[ -e $conf_file ]] || echo '[]' > "$conf_file" || die
464 slyfox 1.33
465     # make sure installed packages do not destroy ghc's
466     # bundled packages
467     local initial_pkg_db=${ROOT}/$(ghc-libdir)/package.conf.d.initial
468     if [[ -e ${initial_pkg_db} ]]; then
469     local checked_pkg
470     for checked_pkg in $(ghc-listpkg "${conf_file}")
471     do
472     local initial_pkg
473     for initial_pkg in $(ghc-listpkg "${initial_pkg_db}"); do
474     if [[ ${checked_pkg} = ${initial_pkg} ]]; then
475     eerror "Package ${checked_pkg} is shipped with $(ghc-version)."
476     eerror "Ebuild author forgot CABAL_CORE_LIB_GHC_PV entry."
477     eerror "Found in ${initial_pkg_db}."
478     die
479     fi
480     done
481     done
482     fi
483 kosmikus 1.1 }
484 kolmodin 1.19
485 kosmikus 1.1 haskell-cabal_src_install() {
486 kolmodin 1.19 pushd "${S}" > /dev/null
487    
488 kosmikus 1.1 cabal_src_install
489 kolmodin 1.19
490     popd > /dev/null
491 kosmikus 1.1 }
492    
493 kolmodin 1.19 # ebuild.sh:use_enable() taken as base
494     #
495     # Usage examples:
496     #
497     # CABAL_CONFIGURE_FLAGS=$(cabal_flag gui)
498     # leads to "--flags=gui" or "--flags=-gui" (useflag 'gui')
499     #
500     # CABAL_CONFIGURE_FLAGS=$(cabal_flag gtk gui)
501     # also leads to "--flags=gui" or " --flags=-gui" (useflag 'gtk')
502     #
503     cabal_flag() {
504     if [[ -z "$1" ]]; then
505     echo "!!! cabal_flag() called without a parameter." >&2
506     echo "!!! cabal_flag() <USEFLAG> [<cabal_flagname>]" >&2
507     return 1
508     fi
509    
510     local UWORD=${2:-$1}
511    
512     if use "$1"; then
513     echo "--flags=${UWORD}"
514     else
515     echo "--flags=-${UWORD}"
516     fi
517    
518     return 0
519     }

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