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Revision 1.52 - (show annotations) (download)
Mon Jul 20 15:05:49 2015 UTC (13 days, 15 hours ago) by slyfox
Branch: MAIN
CVS Tags: HEAD
Changes since 1.51: +20 -2 lines
Workaround upstream cabal tests hangup bug #537500 by Michael Orlitzky; use ghc's haddock for doc generation.

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 1.51 2015/04/04 20:33:05 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:
45 # CABAL_EXTRA_CONFIGURE_FLAGS="--enable-shared --enable-executable-dynamic"
46 : ${CABAL_EXTRA_CONFIGURE_FLAGS:=}
47
48 # @ECLASS-VARIABLE: CABAL_EXTRA_BUILD_FLAGS
49 # @DESCRIPTION:
50 # User-specified additional parameters passed to 'setup build'.
51 # example: /etc/portage/make.conf: CABAL_EXTRA_BUILD_FLAGS=-v
52 : ${CABAL_EXTRA_BUILD_FLAGS:=}
53
54 # @ECLASS-VARIABLE: GHC_BOOTSTRAP_FLAGS
55 # @DESCRIPTION:
56 # User-specified additional parameters for ghc when building
57 # _only_ 'setup' binary bootstrap.
58 # example: /etc/portage/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
59 # linking 'setup' faster.
60 : ${GHC_BOOTSTRAP_FLAGS:=}
61
62 # @ECLASS-VARIABLE: CABAL_DEBUG_LOOSENING
63 # @DESCRIPTION:
64 # Show debug output for 'cabal_chdeps' function if set.
65 # Needs working 'diff'.
66 : ${CABAL_DEBUG_LOOSENING:=}
67
68 HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install pkg_postinst pkg_postrm"
69
70 # 'dev-haskell/cabal' passes those options with ./configure-based
71 # configuration, but most packages don't need/don't accept it:
72 # #515362, #515362
73 QA_CONFIGURE_OPTIONS+=" --with-compiler --with-hc --with-hc-pkg --with-gcc"
74
75 case "${EAPI:-0}" in
76 2|3|4|5) HASKELL_CABAL_EXPF+=" src_configure" ;;
77 *) ;;
78 esac
79
80 EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
81
82 for feature in ${CABAL_FEATURES}; do
83 case ${feature} in
84 haddock) CABAL_USE_HADDOCK=yes;;
85 hscolour) CABAL_USE_HSCOLOUR=yes;;
86 hoogle) CABAL_USE_HOOGLE=yes;;
87 alex) CABAL_USE_ALEX=yes;;
88 happy) CABAL_USE_HAPPY=yes;;
89 c2hs) CABAL_USE_C2HS=yes;;
90 cpphs) CABAL_USE_CPPHS=yes;;
91 profile) CABAL_USE_PROFILE=yes;;
92 bootstrap) CABAL_BOOTSTRAP=yes;;
93 bin) CABAL_HAS_BINARIES=yes;;
94 lib) CABAL_HAS_LIBRARIES=yes;;
95 nocabaldep) CABAL_FROM_GHC=yes;;
96 ghcdeps) CABAL_GHC_CONSTRAINT=yes;;
97 test-suite) CABAL_TEST_SUITE=yes;;
98 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
99 esac
100 done
101
102 if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
103 IUSE="${IUSE} doc"
104 # don't require depend on itself to build docs.
105 # ebuild bootstraps docs from just built binary
106 [[ ${CATEGORY}/${PN} = "dev-haskell/haddock" ]] || DEPEND="${DEPEND} doc? ( dev-haskell/haddock )"
107 fi
108
109 if [[ -n "${CABAL_USE_HSCOLOUR}" ]]; then
110 IUSE="${IUSE} hscolour"
111 DEPEND="${DEPEND} hscolour? ( dev-haskell/hscolour )"
112 fi
113
114 if [[ -n "${CABAL_USE_HOOGLE}" ]]; then
115 # enabled only in ::haskell
116 CABAL_USE_HOOGLE=
117 fi
118
119 if [[ -n "${CABAL_USE_ALEX}" ]]; then
120 DEPEND="${DEPEND} dev-haskell/alex"
121 fi
122
123 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
124 DEPEND="${DEPEND} dev-haskell/happy"
125 fi
126
127 if [[ -n "${CABAL_USE_C2HS}" ]]; then
128 DEPEND="${DEPEND} dev-haskell/c2hs"
129 fi
130
131 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
132 DEPEND="${DEPEND} dev-haskell/cpphs"
133 fi
134
135 if [[ -n "${CABAL_USE_PROFILE}" ]]; then
136 IUSE="${IUSE} profile"
137 fi
138
139 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
140 IUSE="${IUSE} test"
141 fi
142
143 # We always use a standalone version of Cabal, rather than the one that comes
144 # with GHC. But of course we can't depend on cabal when building cabal itself.
145 if [[ -z ${CABAL_MIN_VERSION} ]]; then
146 CABAL_MIN_VERSION=1.1.4
147 fi
148 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then
149 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}"
150 fi
151
152 # returns the version of cabal currently in use.
153 # Rarely it's handy to pin cabal version from outside.
154 : ${_CABAL_VERSION_CACHE:=""}
155 cabal-version() {
156 if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then
157 if [[ "${CABAL_BOOTSTRAP}" ]]; then
158 # We're bootstrapping cabal, so the cabal version is the version
159 # of this package itself.
160 _CABAL_VERSION_CACHE="${PV}"
161 elif [[ "${CABAL_FROM_GHC}" ]]; then
162 _CABAL_VERSION_CACHE="$(ghc-cabal-version)"
163 else
164 # We ask portage, not ghc, so that we only pick up
165 # portage-installed cabal versions.
166 _CABAL_VERSION_CACHE="$(ghc-extractportageversion dev-haskell/cabal)"
167 fi
168 fi
169 echo "${_CABAL_VERSION_CACHE}"
170 }
171
172 cabal-bootstrap() {
173 local setupmodule
174 local cabalpackage
175 local setup_bootstrap_args=()
176
177 if [[ -f "${S}/Setup.lhs" ]]; then
178 setupmodule="${S}/Setup.lhs"
179 elif [[ -f "${S}/Setup.hs" ]]; then
180 setupmodule="${S}/Setup.hs"
181 else
182 die "No Setup.lhs or Setup.hs found"
183 fi
184
185 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
186 eerror "The package dev-haskell/cabal is not correctly installed for"
187 eerror "the currently active version of ghc ($(ghc-version)). Please"
188 eerror "run haskell-updater or re-build dev-haskell/cabal."
189 die "cabal is not correctly installed"
190 fi
191
192 # We build the setup program using the latest version of
193 # cabal that we have installed
194 cabalpackage=Cabal-$(cabal-version)
195 einfo "Using cabal-$(cabal-version)."
196
197 if $(ghc-supports-threaded-runtime); then
198 # Cabal has a bug that deadlocks non-threaded RTS:
199 # https://bugs.gentoo.org/537500
200 # https://github.com/haskell/cabal/issues/2398
201 setup_bootstrap_args+=(-threaded)
202 fi
203
204 make_setup() {
205 set -- -package "${cabalpackage}" --make "${setupmodule}" \
206 ${setup_bootstrap_args} \
207 ${HCFLAGS} \
208 ${GHC_BOOTSTRAP_FLAGS} \
209 "$@" \
210 -o setup
211 echo $(ghc-getghc) "$@"
212 $(ghc-getghc) "$@"
213 }
214 if $(ghc-supports-shared-libraries); then
215 # # some custom build systems might use external libraries,
216 # # for which we don't have shared libs, so keep static fallback
217 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
218 # http://hackage.haskell.org/trac/ghc/ticket/7062
219 # http://hackage.haskell.org/trac/ghc/ticket/3072
220 # ghc does not set RPATH for extralibs, thus we do it ourselves by hands
221 einfo "Prepending $(ghc-libdir) to LD_LIBRARY_PATH"
222 if [[ ${CHOST} != *-darwin* ]]; then
223 LD_LIBRARY_PATH="$(ghc-libdir)${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"
224 export LD_LIBRARY_PATH
225 else
226 DYLD_LIBRARY_PATH="$(ghc-libdir)${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH}"
227 export DYLD_LIBRARY_PATH
228 fi
229 { make_setup -dynamic "$@" && ./setup --help >/dev/null; } ||
230 make_setup "$@" || die "compiling ${setupmodule} failed"
231 else
232 make_setup "$@" || die "compiling ${setupmodule} failed"
233 fi
234 }
235
236 cabal-mksetup() {
237 local setupdir=${1:-${S}}
238 local setup_src=${setupdir}/Setup.hs
239
240 rm -vf "${setupdir}"/Setup.{lhs,hs}
241 elog "Creating 'Setup.hs' for 'Simple' build type."
242
243 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
244 > "${setup_src}" || die "failed to create default Setup.hs"
245 }
246
247 cabal-hscolour() {
248 set -- hscolour "$@"
249 echo ./setup "$@"
250 ./setup "$@" || die "setup hscolour failed"
251 }
252
253 cabal-haddock() {
254 set -- haddock "$@"
255 echo ./setup "$@"
256 ./setup "$@" || die "setup haddock failed"
257 }
258
259 cabal-hoogle() {
260 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
261 }
262
263 cabal-hscolour-haddock() {
264 # --hyperlink-source implies calling 'setup hscolour'
265 set -- haddock --hyperlink-source
266 echo ./setup "$@"
267 ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed"
268 }
269
270 cabal-hoogle-haddock() {
271 set -- haddock --hoogle
272 echo ./setup "$@"
273 ./setup "$@" || die "setup haddock --hoogle failed"
274 }
275
276 cabal-hoogle-hscolour-haddock() {
277 cabal-hscolour-haddock
278 cabal-hoogle-haddock
279 }
280
281 cabal-hoogle-hscolour() {
282 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
283 cabal-hscolour
284 }
285
286 cabal-die-if-nonempty() {
287 local breakage_type=$1
288 shift
289
290 [[ "${#@}" == 0 ]] && return 0
291 eerror "Detected ${breakage_type} packages: ${@}"
292 die "//==-- Please, run 'haskell-updater' to fix ${breakage_type} packages --==//"
293 }
294
295 cabal-show-brokens() {
296 elog "ghc-pkg check: 'checking for other broken packages:'"
297 # pretty-printer
298 $(ghc-getghcpkg) check 2>&1 \
299 | egrep -v '^Warning: haddock-(html|interfaces): ' \
300 | egrep -v '^Warning: include-dirs: ' \
301 | head -n 20
302
303 cabal-die-if-nonempty 'broken' \
304 $($(ghc-getghcpkg) check --simple-output)
305 }
306
307 cabal-show-old() {
308 cabal-die-if-nonempty 'outdated' \
309 $("${EPREFIX}"/usr/sbin/haskell-updater --quiet --upgrade --list-only)
310 }
311
312 cabal-show-brokens-and-die() {
313 cabal-show-brokens
314 cabal-show-old
315
316 die "$@"
317 }
318
319 cabal-configure() {
320 local cabalconf=()
321 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
322
323 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
324 # We use the bundled with GHC version if exists
325 # Haddock is very picky about index files
326 # it generates for ghc's base and other packages.
327 local p=${EPREFIX}/usr/bin/haddock-ghc-$(ghc-version)
328 if [[ -f $p ]]; then
329 cabalconf+=(--with-haddock="${p}")
330 else
331 cabalconf+=(--with-haddock=${EPREFIX}/usr/bin/haddock)
332 fi
333 fi
334 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
335 cabalconf+=(--enable-library-profiling)
336 fi
337 if [[ -n "${CABAL_USE_ALEX}" ]]; then
338 cabalconf+=(--with-alex=${EPREFIX}/usr/bin/alex)
339 fi
340
341 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
342 cabalconf+=(--with-happy=${EPREFIX}/usr/bin/happy)
343 fi
344
345 if [[ -n "${CABAL_USE_C2HS}" ]]; then
346 cabalconf+=(--with-c2hs=${EPREFIX}/usr/bin/c2hs)
347 fi
348 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
349 cabalconf+=(--with-cpphs=${EPREFIX}/usr/bin/cpphs)
350 fi
351 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
352 cabalconf+=($(use_enable test tests))
353 fi
354
355 if [[ -n "${CABAL_GHC_CONSTRAINT}" ]]; then
356 cabalconf+=($(cabal-constraint "ghc"))
357 fi
358
359 local option
360 for option in ${HCFLAGS}
361 do
362 cabalconf+=(--ghc-option="$option")
363 done
364
365 # parallel on all available cores
366 if ghc-supports-parallel-make; then
367 local max_jobs=$(makeopts_jobs)
368
369 # limit to very small value, as parallelism
370 # helps slightly, but makes things severely worse
371 # when amount of threads is Very Large.
372 [[ ${max_jobs} -gt 4 ]] && max_jobs=4
373
374 cabalconf+=(--ghc-option=-j"$max_jobs")
375 fi
376
377 # Building GHCi libs on ppc64 causes "TOC overflow".
378 if use ppc64; then
379 cabalconf+=(--disable-library-for-ghci)
380 fi
381
382 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
383 # so translate LDFLAGS to ghc parameters (without filtering)
384 local flag
385 for flag in $CFLAGS; do cabalconf+=(--ghc-option="-optc$flag"); done
386 for flag in $LDFLAGS; do cabalconf+=(--ghc-option="-optl$flag"); done
387
388 # disable executable stripping for the executables, as portage will
389 # strip by itself, and pre-stripping gives a QA warning.
390 # cabal versions previous to 1.4 does not strip executables, and does
391 # not accept the flag.
392 # this fixes numerous bugs, amongst them;
393 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
394 cabalconf+=(--disable-executable-stripping)
395
396 cabalconf+=(--docdir="${EPREFIX}"/usr/share/doc/${PF})
397 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
398 # it's better if the configure chatter is in the build logs:
399 cabalconf+=(--verbose)
400
401 # We build shared version of our Cabal where ghc ships it's shared
402 # version of it. We will link ./setup as dynamic binary againt Cabal later.
403 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
404 $(ghc-supports-shared-libraries) && \
405 cabalconf+=(--enable-shared)
406
407 if $(ghc-supports-shared-libraries); then
408 # Experimental support for dynamically linked binaries.
409 # We are enabling it since 7.10.1_rc3
410 if version_is_at_least "7.10.0.20150316" "$(ghc-version)"; then
411 # we didn't enable it before as it was not stable on all arches
412 cabalconf+=(--enable-shared)
413 # Known to break on ghc-7.8/Cabal-1.18
414 # https://ghc.haskell.org/trac/ghc/ticket/9625
415 cabalconf+=(--enable-executable-dynamic)
416 fi
417 fi
418
419 # --sysconfdir appeared in Cabal-1.18+
420 if ./setup configure --help | grep -q -- --sysconfdir; then
421 cabalconf+=(--sysconfdir="${EPREFIX}"/etc)
422 fi
423
424 # appeared in Cabal-1.18+ (see '--disable-executable-stripping')
425 if ./setup configure --help | grep -q -- --disable-library-stripping; then
426 cabalconf+=(--disable-library-stripping)
427 fi
428
429 set -- configure \
430 --ghc --prefix="${EPREFIX}"/usr \
431 --with-compiler="$(ghc-getghc)" \
432 --with-hc-pkg="$(ghc-getghcpkg)" \
433 --prefix="${EPREFIX}"/usr \
434 --libdir="${EPREFIX}"/usr/$(get_libdir) \
435 --libsubdir=${P}/ghc-$(ghc-version) \
436 --datadir="${EPREFIX}"/usr/share/ \
437 --datasubdir=${P}/ghc-$(ghc-version) \
438 "${cabalconf[@]}" \
439 ${CABAL_CONFIGURE_FLAGS} \
440 ${CABAL_EXTRA_CONFIGURE_FLAGS} \
441 "$@"
442 echo ./setup "$@"
443 ./setup "$@" || cabal-show-brokens-and-die "setup configure failed"
444 }
445
446 cabal-build() {
447 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@"
448 echo ./setup "$@"
449 ./setup "$@" \
450 || die "setup build failed"
451 }
452
453 cabal-copy() {
454 has "${EAPI:-0}" 0 1 2 && ! use prefix && ED=${D}
455
456 set -- copy --destdir="${D}" "$@"
457 echo ./setup "$@"
458 ./setup "$@" || die "setup copy failed"
459
460 # cabal is a bit eager about creating dirs,
461 # so remove them if they are empty
462 rmdir "${ED}/usr/bin" 2> /dev/null
463 }
464
465 cabal-pkg() {
466 # This does not actually register since we're using true instead
467 # of ghc-pkg. So it just leaves the .conf file and we can
468 # register that ourselves (if it exists).
469
470 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
471 # Newer cabal can generate a package conf for us:
472 ./setup register --gen-pkg-config="${T}/${P}.conf"
473 ghc-install-pkg "${T}/${P}.conf"
474 fi
475 }
476
477 # Some cabal libs are bundled along with some versions of ghc
478 # eg filepath-1.0 comes with ghc-6.6.1
479 # by putting CABAL_CORE_LIB_GHC_PV="6.6.1" in an ebuild we are declaring that
480 # when building with this version of ghc, the ebuild is a dummy that is it will
481 # install no files since the package is already included with ghc.
482 # However portage still records the dependency and we can upgrade the package
483 # to a later one that's not included with ghc.
484 # You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
485 # Those versions are taken as-is from ghc `--numeric-version`.
486 # Package manager versions are also supported:
487 # CABAL_CORE_LIB_GHC_PV="7.10.* PM:7.8.4-r1".
488 cabal-is-dummy-lib() {
489 local bin_ghc_version=$(ghc-version)
490 local pm_ghc_p=$(best_version dev-lang/ghc)
491 local pm_ghc_version version
492
493 pm_ghc_version=PM:${pm_ghc_p#dev-lang/ghc-}
494
495 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
496 [[ "${bin_ghc_version}" == ${version} ]] && return 0
497 [[ "${pm_ghc_version}" == ${version} ]] && return 0
498 done
499
500 return 1
501 }
502
503 # exported function: check if cabal is correctly installed for
504 # the currently active ghc (we cannot guarantee this with portage)
505 haskell-cabal_pkg_setup() {
506 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
507 [[ ${RDEPEND} == *dev-lang/ghc* ]] || eqawarn "QA Notice: A library does not have runtime dependency on dev-lang/ghc."
508 fi
509 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
510 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
511 fi
512 if [[ -n "${CABAL_UNKNOWN}" ]]; then
513 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
514 fi
515 if cabal-is-dummy-lib; then
516 einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
517 fi
518 }
519
520 haskell-cabal_src_configure() {
521 cabal-is-dummy-lib && return
522
523 pushd "${S}" > /dev/null
524
525 cabal-bootstrap
526
527 cabal-configure "$@"
528
529 popd > /dev/null
530 }
531
532 # exported function: nice alias
533 cabal_src_configure() {
534 haskell-cabal_src_configure "$@"
535 }
536
537 # exported function: cabal-style bootstrap configure and compile
538 cabal_src_compile() {
539 # it's a common mistake when one bumps ebuild to EAPI="2" (and upper)
540 # and forgets to separate src_compile() to src_configure()/src_compile().
541 # Such error leads to default src_configure and we lose all passed flags.
542 if ! has "${EAPI:-0}" 0 1; then
543 local passed_flag
544 for passed_flag in "$@"; do
545 [[ ${passed_flag} == --flags=* ]] && \
546 eqawarn "QA Notice: Cabal option '${passed_flag}' has effect only in src_configure()"
547 done
548 fi
549
550 cabal-is-dummy-lib && return
551
552 has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@"
553 cabal-build
554
555 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
556 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
557 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
558 # hoogle, hscolour and haddock
559 cabal-hoogle-hscolour-haddock
560 else
561 # haddock and hscolour
562 cabal-hscolour-haddock
563 fi
564 else
565 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
566 # hoogle and haddock
567 cabal-hoogle-haddock
568 else
569 # just haddock
570 cabal-haddock
571 fi
572 fi
573 else
574 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
575 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
576 # hoogle and hscolour
577 cabal-hoogle-hscolour
578 else
579 # just hscolour
580 cabal-hscolour
581 fi
582 else
583 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
584 # just hoogle
585 cabal-hoogle
586 fi
587 fi
588 fi
589 }
590
591 haskell-cabal_src_compile() {
592 pushd "${S}" > /dev/null
593
594 cabal_src_compile "$@"
595
596 popd > /dev/null
597 }
598
599 haskell-cabal_src_test() {
600 pushd "${S}" > /dev/null
601
602 if cabal-is-dummy-lib; then
603 einfo ">>> No tests for dummy library: ${CATEGORY}/${PF}"
604 else
605 einfo ">>> Test phase [cabal test]: ${CATEGORY}/${PF}"
606 set -- test "$@"
607 echo ./setup "$@"
608 ./setup "$@" || die "cabal test failed"
609 fi
610
611 popd > /dev/null
612 }
613
614 # exported function: cabal-style copy and register
615 cabal_src_install() {
616 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
617
618 if ! cabal-is-dummy-lib; then
619 cabal-copy
620 cabal-pkg
621 fi
622
623 # create a dummy local package conf file for haskell-updater
624 # if it does not exist (dummy libraries and binaries w/o libraries)
625 local ghc_confdir_with_prefix="$(ghc-confdir)"
626 # remove EPREFIX
627 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
628 local hint_db="${D}/$(ghc-confdir)"
629 local hint_file="${hint_db}/${PF}.conf"
630 mkdir -p "${hint_db}" || die
631 touch "${hint_file}" || die
632 }
633
634 haskell-cabal_src_install() {
635 pushd "${S}" > /dev/null
636
637 cabal_src_install
638
639 popd > /dev/null
640 }
641
642 haskell-cabal_pkg_postinst() {
643 ghc-package_pkg_postinst
644 }
645
646 haskell-cabal_pkg_postrm() {
647 ghc-package_pkg_postrm
648 }
649
650 # @FUNCTION: cabal_flag
651 # @DESCRIPTION:
652 # ebuild.sh:use_enable() taken as base
653 #
654 # Usage examples:
655 #
656 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gui)
657 # leads to "--flags=gui" or "--flags=-gui" (useflag 'gui')
658 #
659 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gtk gui)
660 # also leads to "--flags=gui" or " --flags=-gui" (useflag 'gtk')
661 #
662 cabal_flag() {
663 if [[ -z "$1" ]]; then
664 echo "!!! cabal_flag() called without a parameter." >&2
665 echo "!!! cabal_flag() <USEFLAG> [<cabal_flagname>]" >&2
666 return 1
667 fi
668
669 local UWORD=${2:-$1}
670
671 if use "$1"; then
672 echo "--flags=${UWORD}"
673 else
674 echo "--flags=-${UWORD}"
675 fi
676
677 return 0
678 }
679
680 # @FUNCTION: cabal_chdeps
681 # @DESCRIPTION:
682 # Allows easier patching of $CABAL_FILE (${S}/${PN}.cabal by default)
683 # depends
684 #
685 # Accepts argument list as pairs of substitutions: <from-string> <to-string>...
686 #
687 # Dies on error.
688 #
689 # Usage examples:
690 #
691 # src_prepare() {
692 # cabal_chdeps \
693 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7' \
694 # 'containers ==0.4.*' 'containers >= 0.4 && < 0.6'
695 #}
696 # or
697 # src_prepare() {
698 # CABAL_FILE=${S}/${MY_PN}.cabal cabal_chdeps \
699 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7'
700 # CABAL_FILE=${S}/${MY_PN}-tools.cabal cabal_chdeps \
701 # 'base == 3.*' 'base >= 4.2 && < 4.7'
702 #}
703 #
704 cabal_chdeps() {
705 local cabal_fn=${MY_PN:-${PN}}.cabal
706 local cf=${CABAL_FILE:-${S}/${cabal_fn}}
707 local from_ss # ss - substring
708 local to_ss
709 local orig_c # c - contents
710 local new_c
711
712 [[ -f $cf ]] || die "cabal file '$cf' does not exist"
713
714 orig_c=$(< "$cf")
715
716 while :; do
717 from_pat=$1
718 to_str=$2
719
720 [[ -n ${from_pat} ]] || break
721 [[ -n ${to_str} ]] || die "'${from_str}' does not have 'to' part"
722
723 einfo "CHDEP: '${from_pat}' -> '${to_str}'"
724
725 # escape pattern-like symbols
726 from_pat=${from_pat//\*/\\*}
727 from_pat=${from_pat//\[/\\[}
728
729 new_c=${orig_c//${from_pat}/${to_str}}
730
731 if [[ -n $CABAL_DEBUG_LOOSENING ]]; then
732 echo "${orig_c}" >"${T}/${cf}".pre
733 echo "${new_c}" >"${T}/${cf}".post
734 diff -u "${T}/${cf}".{pre,post}
735 fi
736
737 [[ "${orig_c}" == "${new_c}" ]] && die "no trigger for '${from_pat}'"
738 orig_c=${new_c}
739 shift
740 shift
741 done
742
743 echo "${new_c}" > "$cf" ||
744 die "failed to update"
745 }
746
747 # @FUNCTION: cabal-constraint
748 # @DESCRIPTION:
749 # Allowes to set contraint to the libraries that are
750 # used by specified package
751 cabal-constraint() {
752 while read p v ; do
753 echo "--constraint \"$p == $v\""
754 done < $(ghc-pkgdeps ${1})
755 }
756
757 # @FUNCTION: replace-hcflags
758 # @USAGE: <old> <new>
759 # @DESCRIPTION:
760 # Replace the <old> flag with <new> in HCFLAGS. Accepts shell globs for <old>.
761 # The implementation is picked from flag-o-matic.eclass:replace-flags()
762 replace-hcflags() {
763 [[ $# != 2 ]] && die "Usage: replace-hcflags <old flag> <new flag>"
764
765 local f new=()
766 for f in ${HCFLAGS} ; do
767 # Note this should work with globs like -O*
768 if [[ ${f} == ${1} ]]; then
769 einfo "HCFLAGS: replacing '${f}' to '${2}'"
770 f=${2}
771 fi
772 new+=( "${f}" )
773 done
774 export HCFLAGS="${new[*]}"
775
776 return 0
777 }

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