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Revision 1.32 Revision 1.45
1# Copyright 1999-2012 Gentoo Foundation 1# Copyright 1999-2014 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.32 2012/04/19 17:33:19 slyfox Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.45 2014/06/27 07:16:47 slyfox Exp $
4 4
5# @ECLASS: haskell-cabal.eclass 5# @ECLASS: haskell-cabal.eclass
6# @MAINTAINER: 6# @MAINTAINER:
7# Haskell herd <haskell@gentoo.org> 7# Haskell herd <haskell@gentoo.org>
8# @AUTHOR: 8# @AUTHOR:
17# use of. 17# use of.
18# 18#
19# Currently supported features: 19# Currently supported features:
20# haddock -- for documentation generation 20# haddock -- for documentation generation
21# hscolour -- generation of colourised sources 21# hscolour -- generation of colourised sources
22# hoogle -- generation of documentation search index
22# alex -- lexer/scanner generator 23# alex -- lexer/scanner generator
23# happy -- parser generator 24# happy -- parser generator
24# c2hs -- C interface generator 25# c2hs -- C interface generator
25# cpphs -- C preprocessor clone written in Haskell 26# cpphs -- C preprocessor clone written in Haskell
26# profile -- if package supports to build profiling-enabled libraries 27# profile -- if package supports to build profiling-enabled libraries
30# nocabaldep -- don't add dependency on cabal. 31# nocabaldep -- don't add dependency on cabal.
31# only used for packages that _must_ not pull the dependency 32# only used for packages that _must_ not pull the dependency
32# on cabal, but still use this eclass (e.g. haskell-updater). 33# on cabal, but still use this eclass (e.g. haskell-updater).
33# test-suite -- add support for cabal test-suites (introduced in Cabal-1.8) 34# test-suite -- add support for cabal test-suites (introduced in Cabal-1.8)
34 35
35inherit ghc-package multilib 36inherit eutils ghc-package multilib multiprocessing
36 37
37# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS 38# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS
38# @DESCRIPTION: 39# @DESCRIPTION:
39# User-specified additional parameters passed to 'setup configure'. 40# User-specified additional parameters passed to 'setup configure'.
40# example: /etc/make.conf: CABAL_EXTRA_CONFIGURE_FLAGS=--enable-shared 41# example: /etc/portage/make.conf: CABAL_EXTRA_CONFIGURE_FLAGS=--enable-shared
41: ${CABAL_EXTRA_CONFIGURE_FLAGS:=} 42: ${CABAL_EXTRA_CONFIGURE_FLAGS:=}
42 43
43# @ECLASS-VARIABLE: CABAL_EXTRA_BUILD_FLAGS 44# @ECLASS-VARIABLE: CABAL_EXTRA_BUILD_FLAGS
44# @DESCRIPTION: 45# @DESCRIPTION:
45# User-specified additional parameters passed to 'setup build'. 46# User-specified additional parameters passed to 'setup build'.
46# example: /etc/make.conf: CABAL_EXTRA_BUILD_FLAGS=-v 47# example: /etc/portage/make.conf: CABAL_EXTRA_BUILD_FLAGS=-v
47: ${CABAL_EXTRA_BUILD_FLAGS:=} 48: ${CABAL_EXTRA_BUILD_FLAGS:=}
48 49
49# @ECLASS-VARIABLE: GHC_BOOTSTRAP_FLAGS 50# @ECLASS-VARIABLE: GHC_BOOTSTRAP_FLAGS
50# @DESCRIPTION: 51# @DESCRIPTION:
51# User-specified additional parameters for ghc when building 52# User-specified additional parameters for ghc when building
52# _only_ 'setup' binary bootstrap. 53# _only_ 'setup' binary bootstrap.
53# example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make 54# example: /etc/portage/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
54# linking 'setup' faster. 55# linking 'setup' faster.
55: ${GHC_BOOTSTRAP_FLAGS:=} 56: ${GHC_BOOTSTRAP_FLAGS:=}
56 57
58# @ECLASS-VARIABLE: CABAL_DEBUG_LOOSENING
59# @DESCRIPTION:
60# Show debug output for 'cabal_chdeps' function if set.
61# Needs working 'diff'.
62: ${CABAL_DEBUG_LOOSENING:=}
63
57HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install" 64HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install"
58 65
66# 'dev-haskell/cabal' passes those options with ./configure-based
67# configuration, but most packages don't need/don't accept it
68QA_CONFIGURE_OPTIONS+=" --with-hc --with-hc-pkg --with-gcc"
69
59case "${EAPI:-0}" in 70case "${EAPI:-0}" in
60 2|3|4) HASKELL_CABAL_EXPF+=" src_configure" ;; 71 2|3|4|5) HASKELL_CABAL_EXPF+=" src_configure" ;;
61 *) ;; 72 *) ;;
62esac 73esac
63 74
64EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF} 75EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
65 76
125fi 136fi
126if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then 137if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]]; then
127 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}" 138 DEPEND="${DEPEND} >=dev-haskell/cabal-${CABAL_MIN_VERSION}"
128fi 139fi
129 140
130# Libraries require GHC to be installed.
131if [[ -n "${CABAL_HAS_LIBRARIES}" ]]; then
132 RDEPEND="${RDEPEND} dev-lang/ghc"
133fi
134
135# returns the version of cabal currently in use 141# returns the version of cabal currently in use
136_CABAL_VERSION_CACHE="" 142_CABAL_VERSION_CACHE=""
137cabal-version() { 143cabal-version() {
138 if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then 144 if [[ -z "${_CABAL_VERSION_CACHE}" ]]; then
139 if [[ "${CABAL_BOOTSTRAP}" ]]; then 145 if [[ "${CABAL_BOOTSTRAP}" ]]; then
176 cabalpackage=Cabal-$(cabal-version) 182 cabalpackage=Cabal-$(cabal-version)
177 einfo "Using cabal-$(cabal-version)." 183 einfo "Using cabal-$(cabal-version)."
178 184
179 make_setup() { 185 make_setup() {
180 set -- -package "${cabalpackage}" --make "${setupmodule}" \ 186 set -- -package "${cabalpackage}" --make "${setupmodule}" \
187 ${HCFLAGS} \
181 ${GHC_BOOTSTRAP_FLAGS} \ 188 ${GHC_BOOTSTRAP_FLAGS} \
182 "$@" \ 189 "$@" \
183 -o setup 190 -o setup
184 echo $(ghc-getghc) ${HCFLAGS} "$@" 191 echo $(ghc-getghc) "$@"
185 $(ghc-getghc) "$@" 192 $(ghc-getghc) "$@"
186 } 193 }
187 if $(ghc-supports-shared-libraries); then 194 if $(ghc-supports-shared-libraries); then
188 # # some custom build systems might use external libraries, 195 # # some custom build systems might use external libraries,
189 # # for which we don't have shared libs, so keep static fallback 196 # # for which we don't have shared libs, so keep static fallback
190 # Disabled '-dynamic' as ghc does not embed RPATH to used extra-libraries:
191 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3 197 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
192 # make_setup -dynamic "$@" || 198 # http://hackage.haskell.org/trac/ghc/ticket/7062
199 # http://hackage.haskell.org/trac/ghc/ticket/3072
200 # ghc does not set RPATH for extralibs, thus we do it ourselves by hands
201 einfo "Prepending $(ghc-libdir) to LD_LIBRARY_PATH"
202 if [[ ${CHOST} != *-darwin* ]]; then
203 LD_LIBRARY_PATH="$(ghc-libdir)${LD_LIBRARY_PATH:+:}${LD_LIBRARY_PATH}"
204 export LD_LIBRARY_PATH
205 else
206 DYLD_LIBRARY_PATH="$(ghc-libdir)${DYLD_LIBRARY_PATH:+:}${DYLD_LIBRARY_PATH}"
207 export DYLD_LIBRARY_PATH
208 fi
209 { make_setup -dynamic "$@" && ./setup --help >/dev/null; } ||
193 make_setup "$@" || die "compiling ${setupmodule} failed" 210 make_setup "$@" || die "compiling ${setupmodule} failed"
194 else 211 else
195 make_setup "$@" || die "compiling ${setupmodule} failed" 212 make_setup "$@" || die "compiling ${setupmodule} failed"
196 fi 213 fi
197} 214}
198 215
199cabal-mksetup() { 216cabal-mksetup() {
200 local setupdir 217 local setupdir=${1:-${S}}
218 local setup_src=${setupdir}/Setup.hs
201 219
202 if [[ -n $1 ]]; then
203 setupdir=$1
204 else
205 setupdir=${S}
206 fi
207
208 rm -f "${setupdir}"/Setup.{lhs,hs} 220 rm -vf "${setupdir}"/Setup.{lhs,hs}
221 elog "Creating 'Setup.hs' for 'Simple' build type."
209 222
210 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \ 223 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
211 > $setupdir/Setup.hs || die "failed to create default Setup.hs" 224 > "${setup_src}" || die "failed to create default Setup.hs"
212} 225}
213 226
214cabal-hscolour() { 227cabal-hscolour() {
215 set -- hscolour "$@" 228 set -- hscolour "$@"
216 echo ./setup "$@" 229 echo ./setup "$@"
228 set -- haddock --hyperlink-source 241 set -- haddock --hyperlink-source
229 echo ./setup "$@" 242 echo ./setup "$@"
230 ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed" 243 ./setup "$@" --hyperlink-source || die "setup haddock --hyperlink-source failed"
231} 244}
232 245
246cabal-die-if-nonempty() {
247 local breakage_type=$1
248 shift
249
250 [[ "${#@}" == 0 ]] && return 0
251 eerror "Detected ${breakage_type} packages: ${@}"
252 die "//==-- Please, run 'haskell-updater' to fix ${breakage_type} packages --==//"
253}
254
255cabal-show-brokens() {
256 elog "ghc-pkg check: 'checking for other broken packages:'"
257 # pretty-printer
258 $(ghc-getghcpkg) check 2>&1 \
259 | egrep -v '^Warning: haddock-(html|interfaces): ' \
260 | egrep -v '^Warning: include-dirs: ' \
261 | head -n 20
262
263 cabal-die-if-nonempty 'broken' \
264 $($(ghc-getghcpkg) check --simple-output)
265}
266
267cabal-show-old() {
268 cabal-die-if-nonempty 'outdated' \
269 $("${EPREFIX}"/usr/sbin/haskell-updater --quiet --upgrade --list-only)
270}
271
272cabal-show-brokens-and-die() {
273 cabal-show-brokens
274 cabal-show-old
275
276 die "$@"
277}
278
233cabal-configure() { 279cabal-configure() {
280 local cabalconf=()
234 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX= 281 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
235 282
236 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then 283 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
237 cabalconf="${cabalconf} --with-haddock=${EPREFIX}/usr/bin/haddock" 284 cabalconf+=(--with-haddock=${EPREFIX}/usr/bin/haddock)
238 fi 285 fi
239 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then 286 if [[ -n "${CABAL_USE_PROFILE}" ]] && use profile; then
240 cabalconf="${cabalconf} --enable-library-profiling" 287 cabalconf+=(--enable-library-profiling)
241 fi 288 fi
242 if [[ -n "${CABAL_USE_ALEX}" ]]; then 289 if [[ -n "${CABAL_USE_ALEX}" ]]; then
243 cabalconf="${cabalconf} --with-alex=${EPREFIX}/usr/bin/alex" 290 cabalconf+=(--with-alex=${EPREFIX}/usr/bin/alex)
244 fi 291 fi
245 292
246 if [[ -n "${CABAL_USE_HAPPY}" ]]; then 293 if [[ -n "${CABAL_USE_HAPPY}" ]]; then
247 cabalconf="${cabalconf} --with-happy=${EPREFIX}/usr/bin/happy" 294 cabalconf+=(--with-happy=${EPREFIX}/usr/bin/happy)
248 fi 295 fi
249 296
250 if [[ -n "${CABAL_USE_C2HS}" ]]; then 297 if [[ -n "${CABAL_USE_C2HS}" ]]; then
251 cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs" 298 cabalconf+=(--with-c2hs=${EPREFIX}/usr/bin/c2hs)
252 fi 299 fi
253 if [[ -n "${CABAL_USE_CPPHS}" ]]; then 300 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
254 cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs" 301 cabalconf+=(--with-cpphs=${EPREFIX}/usr/bin/cpphs)
255 fi 302 fi
256 if [[ -n "${CABAL_TEST_SUITE}" ]]; then 303 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
257 cabalconf="${cabalconf} $(use_enable test tests)" 304 cabalconf+=($(use_enable test tests))
258 fi 305 fi
259 306
260 local option 307 local option
261 for option in ${HCFLAGS} 308 for option in ${HCFLAGS}
262 do 309 do
263 cabalconf+=" --ghc-option=$option" 310 cabalconf+=(--ghc-option="$option")
264 done 311 done
312
313 # parallel on all available cores
314 if ghc-supports-parallel-make; then
315 local max_jobs=$(makeopts_jobs)
316
317 # limit to very small value, as parallelism
318 # helps slightly, but makes things severely worse
319 # when amount of threads is Very Large.
320 [[ ${max_jobs} -gt 4 ]] && max_jobs=4
321
322 cabalconf+=(--ghc-option=-j"$max_jobs")
323 fi
265 324
266 # Building GHCi libs on ppc64 causes "TOC overflow". 325 # Building GHCi libs on ppc64 causes "TOC overflow".
267 if use ppc64; then 326 if use ppc64; then
268 cabalconf="${cabalconf} --disable-library-for-ghci" 327 cabalconf+=(--disable-library-for-ghci)
269 fi 328 fi
270 329
271 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217) 330 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
272 # so translate LDFLAGS to ghc parameters (without filtering) 331 # so translate LDFLAGS to ghc parameters (without filtering)
273 local flag 332 local flag
274 for flag in $LDFLAGS; do cabalconf="${cabalconf} --ghc-option=-optl$flag"; done 333 for flag in $LDFLAGS; do cabalconf+=(--ghc-option="-optl$flag"); done
275 334
276 # disable executable stripping for the executables, as portage will 335 # disable executable stripping for the executables, as portage will
277 # strip by itself, and pre-stripping gives a QA warning. 336 # strip by itself, and pre-stripping gives a QA warning.
278 # cabal versions previous to 1.4 does not strip executables, and does 337 # cabal versions previous to 1.4 does not strip executables, and does
279 # not accept the flag. 338 # not accept the flag.
280 # this fixes numerous bugs, amongst them; 339 # this fixes numerous bugs, amongst them;
281 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494 340 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
282 cabalconf="${cabalconf} --disable-executable-stripping" 341 cabalconf+=(--disable-executable-stripping)
283 342
284 cabalconf="${cabalconf} --docdir=${EPREFIX}/usr/share/doc/${PF}" 343 cabalconf+=(--docdir="${EPREFIX}"/usr/share/doc/${PF})
285 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes 344 # 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: 345 # it's better if the configure chatter is in the build logs:
287 cabalconf="${cabalconf} --verbose" 346 cabalconf+=(--verbose)
288 347
289 # We build shared version of our Cabal where ghc ships it's shared 348 # 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. 349 # version of it. We will link ./setup as dynamic binary againt Cabal later.
291 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \ 350 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
292 $(ghc-supports-shared-libraries) && \ 351 $(ghc-supports-shared-libraries) && \
293 cabalconf="${cabalconf} --enable-shared" 352 cabalconf+=(--enable-shared)
353
354 if $(ghc-supports-shared-libraries); then
355 # maybe a bit lower
356 if $(ghc-supports-dynamic-by-default); then
357 cabalconf+=(--enable-shared)
358 fi
359 fi
360
361 # --sysconfdir appeared in Cabal-1.18+
362 if ./setup configure --help | grep -q -- --sysconfdir; then
363 cabalconf+=(--sysconfdir="${EPREFIX}"/etc)
364 fi
365
366 # appeared in Cabal-1.18+ (see '--disable-executable-stripping')
367 if ./setup configure --help | grep -q -- --disable-library-stripping; then
368 cabalconf+=(--disable-library-stripping)
369 fi
294 370
295 set -- configure \ 371 set -- configure \
296 --ghc --prefix="${EPREFIX}"/usr \ 372 --ghc --prefix="${EPREFIX}"/usr \
297 --with-compiler="$(ghc-getghc)" \ 373 --with-compiler="$(ghc-getghc)" \
298 --with-hc-pkg="$(ghc-getghcpkg)" \ 374 --with-hc-pkg="$(ghc-getghcpkg)" \
299 --prefix="${EPREFIX}"/usr \ 375 --prefix="${EPREFIX}"/usr \
300 --libdir="${EPREFIX}"/usr/$(get_libdir) \ 376 --libdir="${EPREFIX}"/usr/$(get_libdir) \
301 --libsubdir=${P}/ghc-$(ghc-version) \ 377 --libsubdir=${P}/ghc-$(ghc-version) \
302 --datadir="${EPREFIX}"/usr/share/ \ 378 --datadir="${EPREFIX}"/usr/share/ \
303 --datasubdir=${P}/ghc-$(ghc-version) \ 379 --datasubdir=${P}/ghc-$(ghc-version) \
304 ${cabalconf} \ 380 "${cabalconf[@]}" \
305 ${CABAL_CONFIGURE_FLAGS} \ 381 ${CABAL_CONFIGURE_FLAGS} \
306 ${CABAL_EXTRA_CONFIGURE_FLAGS} \ 382 ${CABAL_EXTRA_CONFIGURE_FLAGS} \
307 "$@" 383 "$@"
308 echo ./setup "$@" 384 echo ./setup "$@"
309 ./setup "$@" || die "setup configure failed" 385 ./setup "$@" || cabal-show-brokens-and-die "setup configure failed"
310} 386}
311 387
312cabal-build() { 388cabal-build() {
313 unset LANG LC_ALL LC_MESSAGES
314 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@" 389 set -- build ${CABAL_EXTRA_BUILD_FLAGS} "$@"
315 echo ./setup "$@" 390 echo ./setup "$@"
316 ./setup "$@" \ 391 ./setup "$@" \
317 || die "setup build failed" 392 || die "setup build failed"
318} 393}
350# However portage still records the dependency and we can upgrade the package 425# However portage still records the dependency and we can upgrade the package
351# to a later one that's not included with ghc. 426# 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". 427# You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
353cabal-is-dummy-lib() { 428cabal-is-dummy-lib() {
354 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do 429 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
355 [[ "$(ghc-version)" == "$version" ]] && return 0 430 [[ "$(ghc-version)" == ${version} ]] && return 0
356 done 431 done
357 return 1 432 return 1
358} 433}
359 434
360# exported function: check if cabal is correctly installed for 435# exported function: check if cabal is correctly installed for
361# the currently active ghc (we cannot guarantee this with portage) 436# the currently active ghc (we cannot guarantee this with portage)
362haskell-cabal_pkg_setup() { 437haskell-cabal_pkg_setup() {
438 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
439 [[ ${RDEPEND} == *dev-lang/ghc* ]] || eqawarn "QA Notice: A library does not have runtime dependency on dev-lang/ghc."
440 fi
363 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then 441 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
364 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES." 442 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
365 fi 443 fi
366 if [[ -n "${CABAL_UNKNOWN}" ]]; then 444 if [[ -n "${CABAL_UNKNOWN}" ]]; then
367 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}" 445 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
459 local ghc_confdir_with_prefix="$(ghc-confdir)" 537 local ghc_confdir_with_prefix="$(ghc-confdir)"
460 # remove EPREFIX 538 # remove EPREFIX
461 dodir ${ghc_confdir_with_prefix#${EPREFIX}} 539 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
462 local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 540 local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
463 [[ -e $conf_file ]] || echo '[]' > "$conf_file" || die 541 [[ -e $conf_file ]] || echo '[]' > "$conf_file" || die
542
543 # make sure installed packages do not destroy ghc's
544 # bundled packages
545 local initial_pkg_db=${ROOT}/$(ghc-libdir)/package.conf.d.initial
546 if [[ -e ${initial_pkg_db} ]]; then
547 local checked_pkg
548 for checked_pkg in $(ghc-listpkg "${conf_file}")
549 do
550 local initial_pkg
551 for initial_pkg in $(ghc-listpkg "${initial_pkg_db}"); do
552 if [[ ${checked_pkg} = ${initial_pkg} ]]; then
553 eerror "Package ${checked_pkg} is shipped with $(ghc-version)."
554 eerror "Ebuild author forgot CABAL_CORE_LIB_GHC_PV entry."
555 eerror "Found in ${initial_pkg_db}."
556 die
557 fi
558 done
559 done
560 fi
464} 561}
465 562
466haskell-cabal_src_install() { 563haskell-cabal_src_install() {
467 pushd "${S}" > /dev/null 564 pushd "${S}" > /dev/null
468 565
469 cabal_src_install 566 cabal_src_install
470 567
471 popd > /dev/null 568 popd > /dev/null
472} 569}
473 570
571# @FUNCTION: cabal_flag
572# @DESCRIPTION:
474# ebuild.sh:use_enable() taken as base 573# ebuild.sh:use_enable() taken as base
475# 574#
476# Usage examples: 575# Usage examples:
477# 576#
478# CABAL_CONFIGURE_FLAGS=$(cabal_flag gui) 577# CABAL_CONFIGURE_FLAGS=$(cabal_flag gui)
496 echo "--flags=-${UWORD}" 595 echo "--flags=-${UWORD}"
497 fi 596 fi
498 597
499 return 0 598 return 0
500} 599}
600
601# @FUNCTION: cabal_chdeps
602# @DESCRIPTION:
603# Allows easier patching of $CABAL_FILE (${S}/${PN}.cabal by default)
604# depends
605#
606# Accepts argument list as pairs of substitutions: <from-string> <to-string>...
607#
608# Dies on error.
609#
610# Usage examples:
611#
612# src_prepare() {
613# cabal_chdeps \
614# 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7' \
615# 'containers ==0.4.*' 'containers >= 0.4 && < 0.6'
616#}
617# or
618# src_prepare() {
619# CABAL_FILE=${S}/${MY_PN}.cabal cabal_chdeps \
620# 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7'
621# CABAL_FILE=${S}/${MY_PN}-tools.cabal cabal_chdeps \
622# 'base == 3.*' 'base >= 4.2 && < 4.7'
623#}
624#
625cabal_chdeps() {
626 local cabal_fn=${MY_PN:-${PN}}.cabal
627 local cf=${CABAL_FILE:-${S}/${cabal_fn}}
628 local from_ss # ss - substring
629 local to_ss
630 local orig_c # c - contents
631 local new_c
632
633 [[ -f $cf ]] || die "cabal file '$cf' does not exist"
634
635 orig_c=$(< "$cf")
636
637 while :; do
638 from_pat=$1
639 to_str=$2
640
641 [[ -n ${from_pat} ]] || break
642 [[ -n ${to_str} ]] || die "'${from_str}' does not have 'to' part"
643
644 einfo "CHDEP: '${from_pat}' -> '${to_str}'"
645
646 # escape pattern-like symbols
647 from_pat=${from_pat//\*/\\*}
648 from_pat=${from_pat//\[/\\[}
649
650 new_c=${orig_c//${from_pat}/${to_str}}
651
652 if [[ -n $CABAL_DEBUG_LOOSENING ]]; then
653 echo "${orig_c}" >"${T}/${cf}".pre
654 echo "${new_c}" >"${T}/${cf}".post
655 diff -u "${T}/${cf}".{pre,post}
656 fi
657
658 [[ "${orig_c}" == "${new_c}" ]] && die "no trigger for '${from_pat}'"
659 orig_c=${new_c}
660 shift
661 shift
662 done
663
664 echo "${new_c}" > "$cf" ||
665 die "failed to update"
666}
667
668# @FUNCTION: replace-hcflags
669# @USAGE: <old> <new>
670# @DESCRIPTION:
671# Replace the <old> flag with <new> in HCFLAGS. Accepts shell globs for <old>.
672# The implementation is picked from flag-o-matic.eclass:replace-flags()
673replace-hcflags() {
674 [[ $# != 2 ]] && die "Usage: replace-hcflags <old flag> <new flag>"
675
676 local f new=()
677 for f in ${HCFLAGS} ; do
678 # Note this should work with globs like -O*
679 if [[ ${f} == ${1} ]]; then
680 einfo "HCFLAGS: replacing '${f}' to '${2}'"
681 f=${2}
682 fi
683 new+=( "${f}" )
684 done
685 export HCFLAGS="${new[*]}"
686
687 return 0
688}

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