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Revision 1.50 - (show annotations) (download)
Sat Mar 28 13:32:40 2015 UTC (3 years, 3 months ago) by slyfox
Branch: MAIN
Changes since 1.49: +9 -3 lines
Enable building dynamic haskell executables since dev-lang/ghc-7.10.1_rc3.

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 1.49 2015/03/15 17:03:27 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 if [[ -f "${S}/Setup.lhs" ]]; then
176 setupmodule="${S}/Setup.lhs"
177 elif [[ -f "${S}/Setup.hs" ]]; then
178 setupmodule="${S}/Setup.hs"
179 else
180 die "No Setup.lhs or Setup.hs found"
181 fi
182
183 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
184 eerror "The package dev-haskell/cabal is not correctly installed for"
185 eerror "the currently active version of ghc ($(ghc-version)). Please"
186 eerror "run haskell-updater or re-build dev-haskell/cabal."
187 die "cabal is not correctly installed"
188 fi
189
190 # We build the setup program using the latest version of
191 # cabal that we have installed
192 cabalpackage=Cabal-$(cabal-version)
193 einfo "Using cabal-$(cabal-version)."
194
195 make_setup() {
196 set -- -package "${cabalpackage}" --make "${setupmodule}" \
197 ${HCFLAGS} \
198 ${GHC_BOOTSTRAP_FLAGS} \
199 "$@" \
200 -o setup
201 echo $(ghc-getghc) "$@"
202 $(ghc-getghc) "$@"
203 }
204 if $(ghc-supports-shared-libraries); then
205 # # some custom build systems might use external libraries,
206 # # for which we don't have shared libs, so keep static fallback
207 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
208 # http://hackage.haskell.org/trac/ghc/ticket/7062
209 # http://hackage.haskell.org/trac/ghc/ticket/3072
210 # ghc does not set RPATH for extralibs, thus we do it ourselves by hands
211 einfo "Prepending $(ghc-libdir) to LD_LIBRARY_PATH"
212 if [[ ${CHOST} != *-darwin* ]]; then
213 LD_LIBRARY_PATH="$(ghc-libdir)${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"
214 export LD_LIBRARY_PATH
215 else
216 DYLD_LIBRARY_PATH="$(ghc-libdir)${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH}"
217 export DYLD_LIBRARY_PATH
218 fi
219 { make_setup -dynamic "$@" && ./setup --help >/dev/null; } ||
220 make_setup "$@" || die "compiling ${setupmodule} failed"
221 else
222 make_setup "$@" || die "compiling ${setupmodule} failed"
223 fi
224 }
225
226 cabal-mksetup() {
227 local setupdir=${1:-${S}}
228 local setup_src=${setupdir}/Setup.hs
229
230 rm -vf "${setupdir}"/Setup.{lhs,hs}
231 elog "Creating 'Setup.hs' for 'Simple' build type."
232
233 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
234 > "${setup_src}" || die "failed to create default Setup.hs"
235 }
236
237 cabal-hscolour() {
238 set -- hscolour "$@"
239 echo ./setup "$@"
240 ./setup "$@" || die "setup hscolour failed"
241 }
242
243 cabal-haddock() {
244 set -- haddock "$@"
245 echo ./setup "$@"
246 ./setup "$@" || die "setup haddock failed"
247 }
248
249 cabal-hoogle() {
250 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
251 }
252
253 cabal-hscolour-haddock() {
254 # --hyperlink-source implies calling 'setup hscolour'
255 set -- haddock --hyperlink-source
256 echo ./setup "$@"
257 ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed"
258 }
259
260 cabal-hoogle-haddock() {
261 set -- haddock --hoogle
262 echo ./setup "$@"
263 ./setup "$@" || die "setup haddock --hoogle failed"
264 }
265
266 cabal-hoogle-hscolour-haddock() {
267 cabal-hscolour-haddock
268 cabal-hoogle-haddock
269 }
270
271 cabal-hoogle-hscolour() {
272 ewarn "hoogle USE flag requires doc USE flag, building without hoogle"
273 cabal-hscolour
274 }
275
276 cabal-die-if-nonempty() {
277 local breakage_type=$1
278 shift
279
280 [[ "${#@}" == 0 ]] && return 0
281 eerror "Detected ${breakage_type} packages: ${@}"
282 die "//==-- Please, run 'haskell-updater' to fix ${breakage_type} packages --==//"
283 }
284
285 cabal-show-brokens() {
286 elog "ghc-pkg check: 'checking for other broken packages:'"
287 # pretty-printer
288 $(ghc-getghcpkg) check 2>&1 \
289 | egrep -v '^Warning: haddock-(html|interfaces): ' \
290 | egrep -v '^Warning: include-dirs: ' \
291 | head -n 20
292
293 cabal-die-if-nonempty 'broken' \
294 $($(ghc-getghcpkg) check --simple-output)
295 }
296
297 cabal-show-old() {
298 cabal-die-if-nonempty 'outdated' \
299 $("${EPREFIX}"/usr/sbin/haskell-updater --quiet --upgrade --list-only)
300 }
301
302 cabal-show-brokens-and-die() {
303 cabal-show-brokens
304 cabal-show-old
305
306 die "$@"
307 }
308
309 cabal-configure() {
310 local cabalconf=()
311 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
312
313 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
314 cabalconf+=(--with-haddock=${EPREFIX}/usr/bin/haddock)
315 fi
316 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
317 cabalconf+=(--enable-library-profiling)
318 fi
319 if [[ -n "${CABAL_USE_ALEX}" ]]; then
320 cabalconf+=(--with-alex=${EPREFIX}/usr/bin/alex)
321 fi
322
323 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
324 cabalconf+=(--with-happy=${EPREFIX}/usr/bin/happy)
325 fi
326
327 if [[ -n "${CABAL_USE_C2HS}" ]]; then
328 cabalconf+=(--with-c2hs=${EPREFIX}/usr/bin/c2hs)
329 fi
330 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
331 cabalconf+=(--with-cpphs=${EPREFIX}/usr/bin/cpphs)
332 fi
333 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
334 cabalconf+=($(use_enable test tests))
335 fi
336
337 if [[ -n "${CABAL_GHC_CONSTRAINT}" ]]; then
338 cabalconf+=($(cabal-constraint "ghc"))
339 fi
340
341 local option
342 for option in ${HCFLAGS}
343 do
344 cabalconf+=(--ghc-option="$option")
345 done
346
347 # parallel on all available cores
348 if ghc-supports-parallel-make; then
349 local max_jobs=$(makeopts_jobs)
350
351 # limit to very small value, as parallelism
352 # helps slightly, but makes things severely worse
353 # when amount of threads is Very Large.
354 [[ ${max_jobs} -gt 4 ]] && max_jobs=4
355
356 cabalconf+=(--ghc-option=-j"$max_jobs")
357 fi
358
359 # Building GHCi libs on ppc64 causes "TOC overflow".
360 if use ppc64; then
361 cabalconf+=(--disable-library-for-ghci)
362 fi
363
364 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
365 # so translate LDFLAGS to ghc parameters (without filtering)
366 local flag
367 for flag in $CFLAGS; do cabalconf+=(--ghc-option="-optc$flag"); done
368 for flag in $LDFLAGS; do cabalconf+=(--ghc-option="-optl$flag"); done
369
370 # disable executable stripping for the executables, as portage will
371 # strip by itself, and pre-stripping gives a QA warning.
372 # cabal versions previous to 1.4 does not strip executables, and does
373 # not accept the flag.
374 # this fixes numerous bugs, amongst them;
375 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
376 cabalconf+=(--disable-executable-stripping)
377
378 cabalconf+=(--docdir="${EPREFIX}"/usr/share/doc/${PF})
379 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
380 # it's better if the configure chatter is in the build logs:
381 cabalconf+=(--verbose)
382
383 # We build shared version of our Cabal where ghc ships it's shared
384 # version of it. We will link ./setup as dynamic binary againt Cabal later.
385 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
386 $(ghc-supports-shared-libraries) && \
387 cabalconf+=(--enable-shared)
388
389 if $(ghc-supports-shared-libraries); then
390 # maybe a bit lower
391 cabalconf+=(--enable-shared)
392
393 # Experimental support for dynamically linked binaries.
394 # We are enabling it since 7.10.1_rc3
395 if version_is_at_least "7.10.0.20150316" "$(ghc-version)"; then
396 # Known to break on ghc-7.8/Cabal-1.18
397 # https://ghc.haskell.org/trac/ghc/ticket/9625
398 cabalconf+=(--enable-executable-dynamic)
399 fi
400 fi
401
402 # --sysconfdir appeared in Cabal-1.18+
403 if ./setup configure --help | grep -q -- --sysconfdir; then
404 cabalconf+=(--sysconfdir="${EPREFIX}"/etc)
405 fi
406
407 # appeared in Cabal-1.18+ (see '--disable-executable-stripping')
408 if ./setup configure --help | grep -q -- --disable-library-stripping; then
409 cabalconf+=(--disable-library-stripping)
410 fi
411
412 set -- configure \
413 --ghc --prefix="${EPREFIX}"/usr \
414 --with-compiler="$(ghc-getghc)" \
415 --with-hc-pkg="$(ghc-getghcpkg)" \
416 --prefix="${EPREFIX}"/usr \
417 --libdir="${EPREFIX}"/usr/$(get_libdir) \
418 --libsubdir=${P}/ghc-$(ghc-version) \
419 --datadir="${EPREFIX}"/usr/share/ \
420 --datasubdir=${P}/ghc-$(ghc-version) \
421 "${cabalconf[@]}" \
422 ${CABAL_CONFIGURE_FLAGS} \
423 ${CABAL_EXTRA_CONFIGURE_FLAGS} \
424 "$@"
425 echo ./setup "$@"
426 ./setup "$@" || cabal-show-brokens-and-die "setup configure failed"
427 }
428
429 cabal-build() {
430 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@"
431 echo ./setup "$@"
432 ./setup "$@" \
433 || die "setup build failed"
434 }
435
436 cabal-copy() {
437 has "${EAPI:-0}" 0 1 2 && ! use prefix && ED=${D}
438
439 set -- copy --destdir="${D}" "$@"
440 echo ./setup "$@"
441 ./setup "$@" || die "setup copy failed"
442
443 # cabal is a bit eager about creating dirs,
444 # so remove them if they are empty
445 rmdir "${ED}/usr/bin" 2> /dev/null
446 }
447
448 cabal-pkg() {
449 # This does not actually register since we're using true instead
450 # of ghc-pkg. So it just leaves the .conf file and we can
451 # register that ourselves (if it exists).
452
453 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
454 # Newer cabal can generate a package conf for us:
455 ./setup register --gen-pkg-config="${T}/${P}.conf"
456 ghc-install-pkg "${T}/${P}.conf"
457 fi
458 }
459
460 # Some cabal libs are bundled along with some versions of ghc
461 # eg filepath-1.0 comes with ghc-6.6.1
462 # by putting CABAL_CORE_LIB_GHC_PV="6.6.1" in an ebuild we are declaring that
463 # when building with this version of ghc, the ebuild is a dummy that is it will
464 # install no files since the package is already included with ghc.
465 # However portage still records the dependency and we can upgrade the package
466 # to a later one that's not included with ghc.
467 # You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
468 # Those versions are taken as-is from ghc `--numeric-version`.
469 # Package manager versions are also supported:
470 # CABAL_CORE_LIB_GHC_PV="7.10.* PM:7.8.4-r1".
471 cabal-is-dummy-lib() {
472 local bin_ghc_version=$(ghc-version)
473 local pm_ghc_p=$(best_version dev-lang/ghc)
474 local pm_ghc_version version
475
476 pm_ghc_version=PM:${pm_ghc_p#dev-lang/ghc-}
477
478 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
479 [[ "${bin_ghc_version}" == ${version} ]] && return 0
480 [[ "${pm_ghc_version}" == ${version} ]] && return 0
481 done
482
483 return 1
484 }
485
486 # exported function: check if cabal is correctly installed for
487 # the currently active ghc (we cannot guarantee this with portage)
488 haskell-cabal_pkg_setup() {
489 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
490 [[ ${RDEPEND} == *dev-lang/ghc* ]] || eqawarn "QA Notice: A library does not have runtime dependency on dev-lang/ghc."
491 fi
492 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
493 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
494 fi
495 if [[ -n "${CABAL_UNKNOWN}" ]]; then
496 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
497 fi
498 if cabal-is-dummy-lib; then
499 einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
500 fi
501 }
502
503 haskell-cabal_src_configure() {
504 cabal-is-dummy-lib && return
505
506 pushd "${S}" > /dev/null
507
508 cabal-bootstrap
509
510 cabal-configure "$@"
511
512 popd > /dev/null
513 }
514
515 # exported function: nice alias
516 cabal_src_configure() {
517 haskell-cabal_src_configure "$@"
518 }
519
520 # exported function: cabal-style bootstrap configure and compile
521 cabal_src_compile() {
522 # it's a common mistake when one bumps ebuild to EAPI="2" (and upper)
523 # and forgets to separate src_compile() to src_configure()/src_compile().
524 # Such error leads to default src_configure and we lose all passed flags.
525 if ! has "${EAPI:-0}" 0 1; then
526 local passed_flag
527 for passed_flag in "$@"; do
528 [[ ${passed_flag} == --flags=* ]] && \
529 eqawarn "QA Notice: Cabal option '${passed_flag}' has effect only in src_configure()"
530 done
531 fi
532
533 cabal-is-dummy-lib && return
534
535 has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@"
536 cabal-build
537
538 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
539 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
540 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
541 # hoogle, hscolour and haddock
542 cabal-hoogle-hscolour-haddock
543 else
544 # haddock and hscolour
545 cabal-hscolour-haddock
546 fi
547 else
548 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
549 # hoogle and haddock
550 cabal-hoogle-haddock
551 else
552 # just haddock
553 cabal-haddock
554 fi
555 fi
556 else
557 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
558 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
559 # hoogle and hscolour
560 cabal-hoogle-hscolour
561 else
562 # just hscolour
563 cabal-hscolour
564 fi
565 else
566 if [[ -n "${CABAL_USE_HOOGLE}" ]] && use hoogle; then
567 # just hoogle
568 cabal-hoogle
569 fi
570 fi
571 fi
572 }
573
574 haskell-cabal_src_compile() {
575 pushd "${S}" > /dev/null
576
577 cabal_src_compile "$@"
578
579 popd > /dev/null
580 }
581
582 haskell-cabal_src_test() {
583 pushd "${S}" > /dev/null
584
585 if cabal-is-dummy-lib; then
586 einfo ">>> No tests for dummy library: ${CATEGORY}/${PF}"
587 else
588 einfo ">>> Test phase [cabal test]: ${CATEGORY}/${PF}"
589 set -- test "$@"
590 echo ./setup "$@"
591 ./setup "$@" || die "cabal test failed"
592 fi
593
594 popd > /dev/null
595 }
596
597 # exported function: cabal-style copy and register
598 cabal_src_install() {
599 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
600
601 if ! cabal-is-dummy-lib; then
602 cabal-copy
603 cabal-pkg
604 fi
605
606 # create a dummy local package conf file for haskell-updater
607 # if it does not exist (dummy libraries and binaries w/o libraries)
608 local ghc_confdir_with_prefix="$(ghc-confdir)"
609 # remove EPREFIX
610 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
611 local hint_db="${D}/$(ghc-confdir)"
612 local hint_file="${hint_db}/${PF}.conf"
613 mkdir -p "${hint_db}" || die
614 touch "${hint_file}" || die
615 }
616
617 haskell-cabal_src_install() {
618 pushd "${S}" > /dev/null
619
620 cabal_src_install
621
622 popd > /dev/null
623 }
624
625 haskell-cabal_pkg_postinst() {
626 ghc-package_pkg_postinst
627 }
628
629 haskell-cabal_pkg_postrm() {
630 ghc-package_pkg_postrm
631 }
632
633 # @FUNCTION: cabal_flag
634 # @DESCRIPTION:
635 # ebuild.sh:use_enable() taken as base
636 #
637 # Usage examples:
638 #
639 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gui)
640 # leads to "--flags=gui" or "--flags=-gui" (useflag 'gui')
641 #
642 # CABAL_CONFIGURE_FLAGS=$(cabal_flag gtk gui)
643 # also leads to "--flags=gui" or " --flags=-gui" (useflag 'gtk')
644 #
645 cabal_flag() {
646 if [[ -z "$1" ]]; then
647 echo "!!! cabal_flag() called without a parameter." >&2
648 echo "!!! cabal_flag() <USEFLAG> [<cabal_flagname>]" >&2
649 return 1
650 fi
651
652 local UWORD=${2:-$1}
653
654 if use "$1"; then
655 echo "--flags=${UWORD}"
656 else
657 echo "--flags=-${UWORD}"
658 fi
659
660 return 0
661 }
662
663 # @FUNCTION: cabal_chdeps
664 # @DESCRIPTION:
665 # Allows easier patching of $CABAL_FILE (${S}/${PN}.cabal by default)
666 # depends
667 #
668 # Accepts argument list as pairs of substitutions: <from-string> <to-string>...
669 #
670 # Dies on error.
671 #
672 # Usage examples:
673 #
674 # src_prepare() {
675 # cabal_chdeps \
676 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7' \
677 # 'containers ==0.4.*' 'containers >= 0.4 && < 0.6'
678 #}
679 # or
680 # src_prepare() {
681 # CABAL_FILE=${S}/${MY_PN}.cabal cabal_chdeps \
682 # 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7'
683 # CABAL_FILE=${S}/${MY_PN}-tools.cabal cabal_chdeps \
684 # 'base == 3.*' 'base >= 4.2 && < 4.7'
685 #}
686 #
687 cabal_chdeps() {
688 local cabal_fn=${MY_PN:-${PN}}.cabal
689 local cf=${CABAL_FILE:-${S}/${cabal_fn}}
690 local from_ss # ss - substring
691 local to_ss
692 local orig_c # c - contents
693 local new_c
694
695 [[ -f $cf ]] || die "cabal file '$cf' does not exist"
696
697 orig_c=$(< "$cf")
698
699 while :; do
700 from_pat=$1
701 to_str=$2
702
703 [[ -n ${from_pat} ]] || break
704 [[ -n ${to_str} ]] || die "'${from_str}' does not have 'to' part"
705
706 einfo "CHDEP: '${from_pat}' -> '${to_str}'"
707
708 # escape pattern-like symbols
709 from_pat=${from_pat//\*/\\*}
710 from_pat=${from_pat//\[/\\[}
711
712 new_c=${orig_c//${from_pat}/${to_str}}
713
714 if [[ -n $CABAL_DEBUG_LOOSENING ]]; then
715 echo "${orig_c}" >"${T}/${cf}".pre
716 echo "${new_c}" >"${T}/${cf}".post
717 diff -u "${T}/${cf}".{pre,post}
718 fi
719
720 [[ "${orig_c}" == "${new_c}" ]] && die "no trigger for '${from_pat}'"
721 orig_c=${new_c}
722 shift
723 shift
724 done
725
726 echo "${new_c}" > "$cf" ||
727 die "failed to update"
728 }
729
730 # @FUNCTION: cabal-constraint
731 # @DESCRIPTION:
732 # Allowes to set contraint to the libraries that are
733 # used by specified package
734 cabal-constraint() {
735 while read p v ; do
736 echo "--constraint \"$p == $v\""
737 done < $(ghc-pkgdeps ${1})
738 }
739
740 # @FUNCTION: replace-hcflags
741 # @USAGE: <old> <new>
742 # @DESCRIPTION:
743 # Replace the <old> flag with <new> in HCFLAGS. Accepts shell globs for <old>.
744 # The implementation is picked from flag-o-matic.eclass:replace-flags()
745 replace-hcflags() {
746 [[ $# != 2 ]] && die "Usage: replace-hcflags <old flag> <new flag>"
747
748 local f new=()
749 for f in ${HCFLAGS} ; do
750 # Note this should work with globs like -O*
751 if [[ ${f} == ${1} ]]; then
752 einfo "HCFLAGS: replacing '${f}' to '${2}'"
753 f=${2}
754 fi
755 new+=( "${f}" )
756 done
757 export HCFLAGS="${new[*]}"
758
759 return 0
760 }

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