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Revision 1.48 - (show annotations) (download)
Fri Jan 2 09:35:02 2015 UTC (2 months ago) by slyfox
Branch: MAIN
CVS Tags: HEAD
Changes since 1.47: +2 -2 lines
Properly disable USE=hoogle.

1 # Copyright 1999-2015 Gentoo Foundation
2 # Distributed under the terms of the GNU General Public License v2
3 # $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.47 2015/01/01 21:23:03 slyfox Exp $
4
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 # 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 # hscolour -- generation of colourised sources
22 # hoogle -- generation of documentation search index
23 # alex -- lexer/scanner generator
24 # happy -- parser generator
25 # c2hs -- C interface generator
26 # cpphs -- C preprocessor clone written in Haskell
27 # profile -- if package supports to build profiling-enabled libraries
28 # bootstrap -- only used for the cabal package itself
29 # bin -- the package installs binaries
30 # lib -- the package installs libraries
31 # nocabaldep -- don't add dependency on cabal.
32 # only used for packages that _must_ not pull the dependency
33 # on cabal, but still use this eclass (e.g. haskell-updater).
34 # ghcdeps -- constraint dependency on package to ghc onces
35 # only used for packages that use libghc internally and _must_
36 # not pull upper versions
37 # test-suite -- add support for cabal test-suites (introduced in Cabal-1.8)
38
39 inherit eutils ghc-package multilib multiprocessing
40
41 # @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS
42 # @DESCRIPTION:
43 # User-specified additional parameters passed to 'setup configure'.
44 # example: /etc/portage/make.conf: CABAL_EXTRA_CONFIGURE_FLAGS=--enable-shared
45 : ${CABAL_EXTRA_CONFIGURE_FLAGS:=}
46
47 # @ECLASS-VARIABLE: CABAL_EXTRA_BUILD_FLAGS
48 # @DESCRIPTION:
49 # User-specified additional parameters passed to 'setup build'.
50 # example: /etc/portage/make.conf: CABAL_EXTRA_BUILD_FLAGS=-v
51 : ${CABAL_EXTRA_BUILD_FLAGS:=}
52
53 # @ECLASS-VARIABLE: GHC_BOOTSTRAP_FLAGS
54 # @DESCRIPTION:
55 # User-specified additional parameters for ghc when building
56 # _only_ 'setup' binary bootstrap.
57 # example: /etc/portage/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
58 # linking 'setup' faster.
59 : ${GHC_BOOTSTRAP_FLAGS:=}
60
61 # @ECLASS-VARIABLE: CABAL_DEBUG_LOOSENING
62 # @DESCRIPTION:
63 # Show debug output for 'cabal_chdeps' function if set.
64 # Needs working 'diff'.
65 : ${CABAL_DEBUG_LOOSENING:=}
66
67 HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install pkg_postinst pkg_postrm"
68
69 # 'dev-haskell/cabal' passes those options with ./configure-based
70 # configuration, but most packages don't need/don't accept it:
71 # #515362, #515362
72 QA_CONFIGURE_OPTIONS+=" --with-compiler --with-hc --with-hc-pkg --with-gcc"
73
74 case "${EAPI:-0}" in
75 2|3|4|5) HASKELL_CABAL_EXPF+=" src_configure" ;;
76 *) ;;
77 esac
78
79 EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
80
81 for feature in ${CABAL_FEATURES}; do
82 case ${feature} in
83 haddock) CABAL_USE_HADDOCK=yes;;
84 hscolour) CABAL_USE_HSCOLOUR=yes;;
85 hoogle) CABAL_USE_HOOGLE=yes;;
86 alex) CABAL_USE_ALEX=yes;;
87 happy) CABAL_USE_HAPPY=yes;;
88 c2hs) CABAL_USE_C2HS=yes;;
89 cpphs) CABAL_USE_CPPHS=yes;;
90 profile) CABAL_USE_PROFILE=yes;;
91 bootstrap) CABAL_BOOTSTRAP=yes;;
92 bin) CABAL_HAS_BINARIES=yes;;
93 lib) CABAL_HAS_LIBRARIES=yes;;
94 nocabaldep) CABAL_FROM_GHC=yes;;
95 ghcdeps) CABAL_GHC_CONSTRAINT=yes;;
96 test-suite) CABAL_TEST_SUITE=yes;;
97 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
98 esac
99 done
100
101 if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
102 IUSE="${IUSE} doc"
103 # don't require depend on itself to build docs.
104 # ebuild bootstraps docs from just built binary
105 [[ ${CATEGORY}/${PN} = "dev-haskell/haddock" ]] || DEPEND="${DEPEND} doc? ( dev-haskell/haddock )"
106 fi
107
108 if [[ -n "${CABAL_USE_HSCOLOUR}" ]]; then
109 IUSE="${IUSE} hscolour"
110 DEPEND="${DEPEND} hscolour? ( dev-haskell/hscolour )"
111 fi
112
113 if [[ -n "${CABAL_USE_HOOGLE}" ]]; then
114 # enabled only in ::gentoo-haskell
115 CABAL_USE_HOOGLE=
116 fi
117
118 if [[ -n "${CABAL_USE_ALEX}" ]]; then
119 DEPEND="${DEPEND} dev-haskell/alex"
120 fi
121
122 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
123 DEPEND="${DEPEND} dev-haskell/happy"
124 fi
125
126 if [[ -n "${CABAL_USE_C2HS}" ]]; then
127 DEPEND="${DEPEND} dev-haskell/c2hs"
128 fi
129
130 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
131 DEPEND="${DEPEND} dev-haskell/cpphs"
132 fi
133
134 if [[ -n "${CABAL_USE_PROFILE}" ]]; then
135 IUSE="${IUSE} profile"
136 fi
137
138 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
139 IUSE="${IUSE} test"
140 fi
141
142 # We always use a standalone version of Cabal, rather than the one that comes
143 # with GHC. But of course we can't depend on cabal when building cabal itself.
144 if [[ -z ${CABAL_MIN_VERSION} ]]; then
145 CABAL_MIN_VERSION=1.1.4
146 fi
147 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then
148 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}"
149 fi
150
151 # returns the version of cabal currently in use
152 _CABAL_VERSION_CACHE=""
153 cabal-version() {
154 if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then
155 if [[ "${CABAL_BOOTSTRAP}" ]]; then
156 # We're bootstrapping cabal, so the cabal version is the version
157 # of this package itself.
158 _CABAL_VERSION_CACHE="${PV}"
159 elif [[ "${CABAL_FROM_GHC}" ]]; then
160 _CABAL_VERSION_CACHE="$(ghc-cabal-version)"
161 else
162 # We ask portage, not ghc, so that we only pick up
163 # portage-installed cabal versions.
164 _CABAL_VERSION_CACHE="$(ghc-extractportageversion dev-haskell/cabal)"
165 fi
166 fi
167 echo "${_CABAL_VERSION_CACHE}"
168 }
169
170 cabal-bootstrap() {
171 local setupmodule
172 local cabalpackage
173 if [[ -f "${S}/Setup.lhs" ]]; then
174 setupmodule="${S}/Setup.lhs"
175 elif [[ -f "${S}/Setup.hs" ]]; then
176 setupmodule="${S}/Setup.hs"
177 else
178 die "No Setup.lhs or Setup.hs found"
179 fi
180
181 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
182 eerror "The package dev-haskell/cabal is not correctly installed for"
183 eerror "the currently active version of ghc ($(ghc-version)). Please"
184 eerror "run haskell-updater or re-build dev-haskell/cabal."
185 die "cabal is not correctly installed"
186 fi
187
188 # We build the setup program using the latest version of
189 # cabal that we have installed
190 cabalpackage=Cabal-$(cabal-version)
191 einfo "Using cabal-$(cabal-version)."
192
193 make_setup() {
194 set -- -package "${cabalpackage}" --make "${setupmodule}" \
195 ${HCFLAGS} \
196 ${GHC_BOOTSTRAP_FLAGS} \
197 "$@" \
198 -o setup
199 echo $(ghc-getghc) "$@"
200 $(ghc-getghc) "$@"
201 }
202 if $(ghc-supports-shared-libraries); then
203 # # some custom build systems might use external libraries,
204 # # for which we don't have shared libs, so keep static fallback
205 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
206 # http://hackage.haskell.org/trac/ghc/ticket/7062
207 # http://hackage.haskell.org/trac/ghc/ticket/3072
208 # ghc does not set RPATH for extralibs, thus we do it ourselves by hands
209 einfo "Prepending $(ghc-libdir) to LD_LIBRARY_PATH"
210 if [[ ${CHOST} != *-darwin* ]]; then
211 LD_LIBRARY_PATH="$(ghc-libdir)${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"
212 export LD_LIBRARY_PATH
213 else
214 DYLD_LIBRARY_PATH="$(ghc-libdir)${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH}"
215 export DYLD_LIBRARY_PATH
216 fi
217 { make_setup -dynamic "$@" && ./setup --help >/dev/null; } ||
218 make_setup "$@" || die "compiling ${setupmodule} failed"
219 else
220 make_setup "$@" || die "compiling ${setupmodule} failed"
221 fi
222 }
223
224 cabal-mksetup() {
225 local setupdir=${1:-${S}}
226 local setup_src=${setupdir}/Setup.hs
227
228 rm -vf "${setupdir}"/Setup.{lhs,hs}
229 elog "Creating 'Setup.hs' for 'Simple' build type."
230
231 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
232 > "${setup_src}" || die "failed to create default Setup.hs"
233 }
234
235 cabal-hscolour() {
236 set -- hscolour "$@"
237 echo ./setup "$@"
238 ./setup "$@" || die "setup hscolour failed"
239 }
240
241 cabal-haddock() {
242 set -- haddock "$@"
243 echo ./setup "$@"
244 ./setup "$@" || die "setup haddock failed"
245 }
246
247 cabal-hoogle() {
248 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
249 }
250
251 cabal-hscolour-haddock() {
252 # --hyperlink-source implies calling 'setup hscolour'
253 set -- haddock --hyperlink-source
254 echo ./setup "$@"
255 ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed"
256 }
257
258 cabal-hoogle-haddock() {
259 set -- haddock --hoogle
260 echo ./setup "$@"
261 ./setup "$@" || die "setup haddock --hoogle failed"
262 }
263
264 cabal-hoogle-hscolour-haddock() {
265 cabal-hscolour-haddock
266 cabal-hoogle-haddock
267 }
268
269 cabal-hoogle-hscolour() {
270 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
271 cabal-hscolour
272 }
273
274 cabal-die-if-nonempty() {
275 local breakage_type=$1
276 shift
277
278 [[ "${#@}" == 0 ]] && return 0
279 eerror "Detected ${breakage_type} packages: ${@}"
280 die "//==-- Please, run 'haskell-updater' to fix ${breakage_type} packages --==//"
281 }
282
283 cabal-show-brokens() {
284 elog "ghc-pkg check: 'checking for other broken packages:'"
285 # pretty-printer
286 $(ghc-getghcpkg) check 2>&1 \
287 | egrep -v '^Warning: haddock-(html|interfaces): ' \
288 | egrep -v '^Warning: include-dirs: ' \
289 | head -n 20
290
291 cabal-die-if-nonempty 'broken' \
292 $($(ghc-getghcpkg) check --simple-output)
293 }
294
295 cabal-show-old() {
296 cabal-die-if-nonempty 'outdated' \
297 $("${EPREFIX}"/usr/sbin/haskell-updater --quiet --upgrade --list-only)
298 }
299
300 cabal-show-brokens-and-die() {
301 cabal-show-brokens
302 cabal-show-old
303
304 die "$@"
305 }
306
307 cabal-configure() {
308 local cabalconf=()
309 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
310
311 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
312 cabalconf+=(--with-haddock=${EPREFIX}/usr/bin/haddock)
313 fi
314 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
315 cabalconf+=(--enable-library-profiling)
316 fi
317 if [[ -n "${CABAL_USE_ALEX}" ]]; then
318 cabalconf+=(--with-alex=${EPREFIX}/usr/bin/alex)
319 fi
320
321 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
322 cabalconf+=(--with-happy=${EPREFIX}/usr/bin/happy)
323 fi
324
325 if [[ -n "${CABAL_USE_C2HS}" ]]; then
326 cabalconf+=(--with-c2hs=${EPREFIX}/usr/bin/c2hs)
327 fi
328 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
329 cabalconf+=(--with-cpphs=${EPREFIX}/usr/bin/cpphs)
330 fi
331 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
332 cabalconf+=($(use_enable test tests))
333 fi
334
335 if [[ -n "${CABAL_GHC_CONSTRAINT}" ]]; then
336 cabalconf+=($(cabal-constraint "ghc"))
337 fi
338
339 local option
340 for option in ${HCFLAGS}
341 do
342 cabalconf+=(--ghc-option="$option")
343 done
344
345 # parallel on all available cores
346 if ghc-supports-parallel-make; then
347 local max_jobs=$(makeopts_jobs)
348
349 # limit to very small value, as parallelism
350 # helps slightly, but makes things severely worse
351 # when amount of threads is Very Large.
352 [[ ${max_jobs} -gt 4 ]] && max_jobs=4
353
354 cabalconf+=(--ghc-option=-j"$max_jobs")
355 fi
356
357 # Building GHCi libs on ppc64 causes "TOC overflow".
358 if use ppc64; then
359 cabalconf+=(--disable-library-for-ghci)
360 fi
361
362 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
363 # so translate LDFLAGS to ghc parameters (without filtering)
364 local flag
365 for flag in $LDFLAGS; do cabalconf+=(--ghc-option="-optl$flag"); done
366
367 # disable executable stripping for the executables, as portage will
368 # strip by itself, and pre-stripping gives a QA warning.
369 # cabal versions previous to 1.4 does not strip executables, and does
370 # not accept the flag.
371 # this fixes numerous bugs, amongst them;
372 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
373 cabalconf+=(--disable-executable-stripping)
374
375 cabalconf+=(--docdir="${EPREFIX}"/usr/share/doc/${PF})
376 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
377 # it's better if the configure chatter is in the build logs:
378 cabalconf+=(--verbose)
379
380 # We build shared version of our Cabal where ghc ships it's shared
381 # version of it. We will link ./setup as dynamic binary againt Cabal later.
382 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
383 $(ghc-supports-shared-libraries) && \
384 cabalconf+=(--enable-shared)
385
386 if $(ghc-supports-shared-libraries); then
387 # maybe a bit lower
388 if $(ghc-supports-dynamic-by-default); then
389 cabalconf+=(--enable-shared)
390 fi
391 fi
392
393 # --sysconfdir appeared in Cabal-1.18+
394 if ./setup configure --help | grep -q -- --sysconfdir; then
395 cabalconf+=(--sysconfdir="${EPREFIX}"/etc)
396 fi
397
398 # appeared in Cabal-1.18+ (see '--disable-executable-stripping')
399 if ./setup configure --help | grep -q -- --disable-library-stripping; then
400 cabalconf+=(--disable-library-stripping)
401 fi
402
403 set -- configure \
404 --ghc --prefix="${EPREFIX}"/usr \
405 --with-compiler="$(ghc-getghc)" \
406 --with-hc-pkg="$(ghc-getghcpkg)" \
407 --prefix="${EPREFIX}"/usr \
408 --libdir="${EPREFIX}"/usr/$(get_libdir) \
409 --libsubdir=${P}/ghc-$(ghc-version) \
410 --datadir="${EPREFIX}"/usr/share/ \
411 --datasubdir=${P}/ghc-$(ghc-version) \
412 "${cabalconf[@]}" \
413 ${CABAL_CONFIGURE_FLAGS} \
414 ${CABAL_EXTRA_CONFIGURE_FLAGS} \
415 "$@"
416 echo ./setup "$@"
417 ./setup "$@" || cabal-show-brokens-and-die "setup configure failed"
418 }
419
420 cabal-build() {
421 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@"
422 echo ./setup "$@"
423 ./setup "$@" \
424 || die "setup build failed"
425 }
426
427 cabal-copy() {
428 has "${EAPI:-0}" 0 1 2 && ! use prefix && ED=${D}
429
430 set -- copy --destdir="${D}" "$@"
431 echo ./setup "$@"
432 ./setup "$@" || die "setup copy failed"
433
434 # cabal is a bit eager about creating dirs,
435 # so remove them if they are empty
436 rmdir "${ED}/usr/bin" 2> /dev/null
437 }
438
439 cabal-pkg() {
440 # This does not actually register since we're using true instead
441 # of ghc-pkg. So it just leaves the .conf file and we can
442 # register that ourselves (if it exists).
443
444 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
445 # Newer cabal can generate a package conf for us:
446 ./setup register --gen-pkg-config="${T}/${P}.conf"
447 ghc-install-pkg "${T}/${P}.conf"
448 fi
449 }
450
451 # Some cabal libs are bundled along with some versions of ghc
452 # eg filepath-1.0 comes with ghc-6.6.1
453 # by putting CABAL_CORE_LIB_GHC_PV="6.6.1" in an ebuild we are declaring that
454 # when building with this version of ghc, the ebuild is a dummy that is it will
455 # install no files since the package is already included with ghc.
456 # However portage still records the dependency and we can upgrade the package
457 # to a later one that's not included with ghc.
458 # You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
459 cabal-is-dummy-lib() {
460 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
461 [[ "$(ghc-version)" == ${version} ]] && return 0
462 done
463 return 1
464 }
465
466 # exported function: check if cabal is correctly installed for
467 # the currently active ghc (we cannot guarantee this with portage)
468 haskell-cabal_pkg_setup() {
469 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
470 [[ ${RDEPEND} == *dev-lang/ghc* ]] || eqawarn "QA Notice: A library does not have runtime dependency on dev-lang/ghc."
471 fi
472 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
473 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
474 fi
475 if [[ -n "${CABAL_UNKNOWN}" ]]; then
476 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
477 fi
478 if cabal-is-dummy-lib; then
479 einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
480 fi
481 }
482
483 haskell-cabal_src_configure() {
484 cabal-is-dummy-lib && return
485
486 pushd "${S}" > /dev/null
487
488 cabal-bootstrap
489
490 cabal-configure "$@"
491
492 popd > /dev/null
493 }
494
495 # exported function: nice alias
496 cabal_src_configure() {
497 haskell-cabal_src_configure "$@"
498 }
499
500 # exported function: cabal-style bootstrap configure and compile
501 cabal_src_compile() {
502 # it's a common mistake when one bumps ebuild to EAPI="2" (and upper)
503 # and forgets to separate src_compile() to src_configure()/src_compile().
504 # Such error leads to default src_configure and we lose all passed flags.
505 if ! has "${EAPI:-0}" 0 1; then
506 local passed_flag
507 for passed_flag in "$@"; do
508 [[ ${passed_flag} == --flags=* ]] && \
509 eqawarn "QA Notice: Cabal option '${passed_flag}' has effect only in src_configure()"
510 done
511 fi
512
513 cabal-is-dummy-lib && return
514
515 has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@"
516 cabal-build
517
518 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
519 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
520 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
521 # hoogle, hscolour and haddock
522 cabal-hoogle-hscolour-haddock
523 else
524 # haddock and hscolour
525 cabal-hscolour-haddock
526 fi
527 else
528 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
529 # hoogle and haddock
530 cabal-hoogle-haddock
531 else
532 # just haddock
533 cabal-haddock
534 fi
535 fi
536 else
537 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
538 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
539 # hoogle and hscolour
540 cabal-hoogle-hscolour
541 else
542 # just hscolour
543 cabal-hscolour
544 fi
545 else
546 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
547 # just hoogle
548 cabal-hoogle
549 fi
550 fi
551 fi
552 }
553
554 haskell-cabal_src_compile() {
555 pushd "${S}" > /dev/null
556
557 cabal_src_compile "$@"
558
559 popd > /dev/null
560 }
561
562 haskell-cabal_src_test() {
563 pushd "${S}" > /dev/null
564
565 if cabal-is-dummy-lib; then
566 einfo ">>> No tests for dummy library: ${CATEGORY}/${PF}"
567 else
568 einfo ">>> Test phase [cabal test]: ${CATEGORY}/${PF}"
569 set -- test "$@"
570 echo ./setup "$@"
571 ./setup "$@" || die "cabal test failed"
572 fi
573
574 popd > /dev/null
575 }
576
577 # exported function: cabal-style copy and register
578 cabal_src_install() {
579 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
580
581 if ! cabal-is-dummy-lib; then
582 cabal-copy
583 cabal-pkg
584 fi
585
586 # create a dummy local package conf file for haskell-updater
587 # if it does not exist (dummy libraries and binaries w/o libraries)
588 local ghc_confdir_with_prefix="$(ghc-confdir)"
589 # remove EPREFIX
590 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
591 local hint_db="${D}/$(ghc-confdir)"
592 local hint_file="${hint_db}/${PF}.conf"
593 mkdir -p "${hint_db}" || die
594 touch "${hint_file}" || die
595 }
596
597 haskell-cabal_src_install() {
598 pushd "${S}" > /dev/null
599
600 cabal_src_install
601
602 popd > /dev/null
603 }
604
605 haskell-cabal_pkg_postinst() {
606 ghc-package_pkg_postinst
607 }
608
609 haskell-cabal_pkg_postrm() {
610 ghc-package_pkg_postrm
611 }
612
613 # @FUNCTION: cabal_flag
614 # @DESCRIPTION:
615 # ebuild.sh:use_enable() taken as base
616 #
617 # Usage examples:
618 #
619 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gui)
620 # leads to "--flags=gui" or "--flags=-gui" (useflag 'gui')
621 #
622 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gtk gui)
623 # also leads to "--flags=gui" or " --flags=-gui" (useflag 'gtk')
624 #
625 cabal_flag() {
626 if [[ -z "$1" ]]; then
627 echo "!!! cabal_flag() called without a parameter." >&2
628 echo "!!! cabal_flag() <USEFLAG> [<cabal_flagname>]" >&2
629 return 1
630 fi
631
632 local UWORD=${2:-$1}
633
634 if use "$1"; then
635 echo "--flags=${UWORD}"
636 else
637 echo "--flags=-${UWORD}"
638 fi
639
640 return 0
641 }
642
643 # @FUNCTION: cabal_chdeps
644 # @DESCRIPTION:
645 # Allows easier patching of $CABAL_FILE (${S}/${PN}.cabal by default)
646 # depends
647 #
648 # Accepts argument list as pairs of substitutions: <from-string> <to-string>...
649 #
650 # Dies on error.
651 #
652 # Usage examples:
653 #
654 # src_prepare() {
655 # cabal_chdeps \
656 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7' \
657 # 'containers ==0.4.*' 'containers >= 0.4 && < 0.6'
658 #}
659 # or
660 # src_prepare() {
661 # CABAL_FILE=${S}/${MY_PN}.cabal cabal_chdeps \
662 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7'
663 # CABAL_FILE=${S}/${MY_PN}-tools.cabal cabal_chdeps \
664 # 'base == 3.*' 'base >= 4.2 && < 4.7'
665 #}
666 #
667 cabal_chdeps() {
668 local cabal_fn=${MY_PN:-${PN}}.cabal
669 local cf=${CABAL_FILE:-${S}/${cabal_fn}}
670 local from_ss # ss - substring
671 local to_ss
672 local orig_c # c - contents
673 local new_c
674
675 [[ -f $cf ]] || die "cabal file '$cf' does not exist"
676
677 orig_c=$(< "$cf")
678
679 while :; do
680 from_pat=$1
681 to_str=$2
682
683 [[ -n ${from_pat} ]] || break
684 [[ -n ${to_str} ]] || die "'${from_str}' does not have 'to' part"
685
686 einfo "CHDEP: '${from_pat}' -> '${to_str}'"
687
688 # escape pattern-like symbols
689 from_pat=${from_pat//\*/\\*}
690 from_pat=${from_pat//\[/\\[}
691
692 new_c=${orig_c//${from_pat}/${to_str}}
693
694 if [[ -n $CABAL_DEBUG_LOOSENING ]]; then
695 echo "${orig_c}" >"${T}/${cf}".pre
696 echo "${new_c}" >"${T}/${cf}".post
697 diff -u "${T}/${cf}".{pre,post}
698 fi
699
700 [[ "${orig_c}" == "${new_c}" ]] && die "no trigger for '${from_pat}'"
701 orig_c=${new_c}
702 shift
703 shift
704 done
705
706 echo "${new_c}" > "$cf" ||
707 die "failed to update"
708 }
709
710 # @FUNCTION: cabal-constraint
711 # @DESCRIPTION:
712 # Allowes to set contraint to the libraries that are
713 # used by specified package
714 cabal-constraint() {
715 while read p v ; do
716 echo "--constraint \"$p == $v\""
717 done < $(ghc-pkgdeps ${1})
718 }
719
720 # @FUNCTION: replace-hcflags
721 # @USAGE: <old> <new>
722 # @DESCRIPTION:
723 # Replace the <old> flag with <new> in HCFLAGS. Accepts shell globs for <old>.
724 # The implementation is picked from flag-o-matic.eclass:replace-flags()
725 replace-hcflags() {
726 [[ $# != 2 ]] && die "Usage: replace-hcflags <old flag> <new flag>"
727
728 local f new=()
729 for f in ${HCFLAGS} ; do
730 # Note this should work with globs like -O*
731 if [[ ${f} == ${1} ]]; then
732 einfo "HCFLAGS: replacing '${f}' to '${2}'"
733 f=${2}
734 fi
735 new+=( "${f}" )
736 done
737 export HCFLAGS="${new[*]}"
738
739 return 0
740 }

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