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Revision 1.28 Revision 1.36
1# Copyright 1999-2012 Gentoo Foundation 1# Copyright 1999-2012 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 1.28 2012/03/09 22:01:11 slyfox Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/haskell-cabal.eclass,v 1.36 2012/11/19 20:35:16 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
28# bin -- the package installs binaries 29# bin -- the package installs binaries
29# lib -- the package installs libraries 30# lib -- the package installs 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# 34# test-suite -- add support for cabal test-suites (introduced in Cabal-1.8)
34# Dependencies on other cabal packages have to be specified
35# correctly.
36#
37# Cabal libraries should usually be SLOTted with "${PV}".
38#
39# Many Cabal packages require S to be manually set.
40#
41# Conforming Cabal packages don't require any function definitions
42# in the ebuild.
43#
44# Special flags to Cabal Configure can now be set by using
45# CABAL_CONFIGURE_FLAGS
46 35
47inherit ghc-package multilib 36inherit ghc-package multilib
48 37
49# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS 38# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS
50# @DESCRIPTION: 39# @DESCRIPTION:
64# _only_ 'setup' binary bootstrap. 53# _only_ 'setup' binary bootstrap.
65# example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make 54# example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
66# linking 'setup' faster. 55# linking 'setup' faster.
67: ${GHC_BOOTSTRAP_FLAGS:=} 56: ${GHC_BOOTSTRAP_FLAGS:=}
68 57
58# @ECLASS-VARIABLE: CABAL_DEBUG_LOOSENING
59# @DESCRIPTION:
60# Show debug output for 'cabal_chdeps' function if set.
61# Needs working 'diff'.
62: ${CABAL_DEBUG_LOOSENING:=}
63
69HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install" 64HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install"
70 65
71case "${EAPI:-0}" in 66case "${EAPI:-0}" in
72 2|3|4) HASKELL_CABAL_EXPF+=" src_configure" ;; 67 2|3|4|5) HASKELL_CABAL_EXPF+=" src_configure" ;;
73 *) ;; 68 *) ;;
74esac 69esac
75 70
76EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF} 71EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
77 72
87 profile) CABAL_USE_PROFILE=yes;; 82 profile) CABAL_USE_PROFILE=yes;;
88 bootstrap) CABAL_BOOTSTRAP=yes;; 83 bootstrap) CABAL_BOOTSTRAP=yes;;
89 bin) CABAL_HAS_BINARIES=yes;; 84 bin) CABAL_HAS_BINARIES=yes;;
90 lib) CABAL_HAS_LIBRARIES=yes;; 85 lib) CABAL_HAS_LIBRARIES=yes;;
91 nocabaldep) CABAL_FROM_GHC=yes;; 86 nocabaldep) CABAL_FROM_GHC=yes;;
87 test-suite) CABAL_TEST_SUITE=yes;;
92 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";; 88 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
93 esac 89 esac
94done 90done
95 91
96if [[ -n "${CABAL_USE_HADDOCK}" ]]; then 92if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
121 DEPEND="${DEPEND} dev-haskell/cpphs" 117 DEPEND="${DEPEND} dev-haskell/cpphs"
122fi 118fi
123 119
124if [[ -n "${CABAL_USE_PROFILE}" ]]; then 120if [[ -n "${CABAL_USE_PROFILE}" ]]; then
125 IUSE="${IUSE} profile" 121 IUSE="${IUSE} profile"
122fi
123
124if [[ -n "${CABAL_TEST_SUITE}" ]]; then
125 IUSE="${IUSE} test"
126fi 126fi
127 127
128# We always use a standalone version of Cabal, rather than the one that comes 128# We always use a standalone version of Cabal, rather than the one that comes
129# with GHC. But of course we can't depend on cabal when building cabal itself. 129# with GHC. But of course we can't depend on cabal when building cabal itself.
130if [[ -z ${CABAL_MIN_VERSION} ]]; then 130if [[ -z ${CABAL_MIN_VERSION} ]]; then
163cabal-bootstrap() { 163cabal-bootstrap() {
164 local setupmodule 164 local setupmodule
165 local cabalpackage 165 local cabalpackage
166 if [[ -f "${S}/Setup.lhs" ]]; then 166 if [[ -f "${S}/Setup.lhs" ]]; then
167 setupmodule="${S}/Setup.lhs" 167 setupmodule="${S}/Setup.lhs"
168 elif [[ -f "${S}/Setup.hs" ]]; then
169 setupmodule="${S}/Setup.hs"
168 else 170 else
169 if [[ -f "${S}/Setup.hs" ]]; then
170 setupmodule="${S}/Setup.hs"
171 else
172 die "No Setup.lhs or Setup.hs found" 171 die "No Setup.lhs or Setup.hs found"
173 fi 172 fi
173
174 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
175 eerror "The package dev-haskell/cabal is not correctly installed for"
176 eerror "the currently active version of ghc ($(ghc-version)). Please"
177 eerror "run haskell-updater or re-build dev-haskell/cabal."
178 die "cabal is not correctly installed"
174 fi 179 fi
175 180
176 # We build the setup program using the latest version of 181 # We build the setup program using the latest version of
177 # cabal that we have installed 182 # cabal that we have installed
178 if version_is_at_least "6.4" "$(ghc-version)"; then
179 cabalpackage=Cabal-$(cabal-version) 183 cabalpackage=Cabal-$(cabal-version)
180 else
181 # older ghc's don't support package versioning
182 cabalpackage=Cabal
183 fi
184 einfo "Using cabal-$(cabal-version)." 184 einfo "Using cabal-$(cabal-version)."
185 185
186 make_setup() { 186 make_setup() {
187 set -- -package "${cabalpackage}" --make "${setupmodule}" \ 187 set -- -package "${cabalpackage}" --make "${setupmodule}" \
188 ${GHC_BOOTSTRAP_FLAGS} \ 188 ${GHC_BOOTSTRAP_FLAGS} \
190 -o setup 190 -o setup
191 echo $(ghc-getghc) ${HCFLAGS} "$@" 191 echo $(ghc-getghc) ${HCFLAGS} "$@"
192 $(ghc-getghc) "$@" 192 $(ghc-getghc) "$@"
193 } 193 }
194 if $(ghc-supports-shared-libraries); then 194 if $(ghc-supports-shared-libraries); then
195 # some custom build systems might use external libraries, 195 # # some custom build systems might use external libraries,
196 # 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
197 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
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; } ||
197 make_setup -dynamic "$@" || make_setup "$@" || die "compiling ${setupmodule} failed" 210 make_setup "$@" || die "compiling ${setupmodule} failed"
198 else 211 else
199 make_setup "$@" || die "compiling ${setupmodule} failed" 212 make_setup "$@" || die "compiling ${setupmodule} failed"
200 fi 213 fi
201} 214}
202 215
210 fi 223 fi
211 224
212 rm -f "${setupdir}"/Setup.{lhs,hs} 225 rm -f "${setupdir}"/Setup.{lhs,hs}
213 226
214 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \ 227 echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
215 > $setupdir/Setup.hs 228 > $setupdir/Setup.hs || die "failed to create default Setup.hs"
216} 229}
217 230
218cabal-hscolour() { 231cabal-hscolour() {
219 set -- hscolour "$@" 232 set -- hscolour "$@"
220 echo ./setup "$@" 233 echo ./setup "$@"
255 cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs" 268 cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs"
256 fi 269 fi
257 if [[ -n "${CABAL_USE_CPPHS}" ]]; then 270 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
258 cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs" 271 cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs"
259 fi 272 fi
273 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
274 cabalconf="${cabalconf} $(use_enable test tests)"
275 fi
260 276
261 local option 277 local option
262 for option in ${HCFLAGS} 278 for option in ${HCFLAGS}
263 do 279 do
264 cabalconf+=" --ghc-option=$option" 280 cabalconf+=" --ghc-option=$option"
272 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217) 288 # currently cabal does not respect CFLAGS and LDFLAGS on it's own (bug #333217)
273 # so translate LDFLAGS to ghc parameters (without filtering) 289 # so translate LDFLAGS to ghc parameters (without filtering)
274 local flag 290 local flag
275 for flag in $LDFLAGS; do cabalconf="${cabalconf} --ghc-option=-optl$flag"; done 291 for flag in $LDFLAGS; do cabalconf="${cabalconf} --ghc-option=-optl$flag"; done
276 292
277 if version_is_at_least "1.4" "$(cabal-version)"; then
278 # disable executable stripping for the executables, as portage will 293 # disable executable stripping for the executables, as portage will
279 # strip by itself, and pre-stripping gives a QA warning. 294 # strip by itself, and pre-stripping gives a QA warning.
280 # cabal versions previous to 1.4 does not strip executables, and does 295 # cabal versions previous to 1.4 does not strip executables, and does
281 # not accept the flag. 296 # not accept the flag.
282 # this fixes numerous bugs, amongst them; 297 # this fixes numerous bugs, amongst them;
283 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494 298 # bug #251881, bug #251882, bug #251884, bug #251886, bug #299494
284 cabalconf="${cabalconf} --disable-executable-stripping" 299 cabalconf="${cabalconf} --disable-executable-stripping"
285 fi
286 300
287 if version_is_at_least "1.2.0" "$(cabal-version)"; then
288 cabalconf="${cabalconf} --docdir=${EPREFIX}/usr/share/doc/${PF}" 301 cabalconf="${cabalconf} --docdir=${EPREFIX}/usr/share/doc/${PF}"
289 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes 302 # As of Cabal 1.2, configure is quite quiet. For diagnostic purposes
290 # it's better if the configure chatter is in the build logs: 303 # it's better if the configure chatter is in the build logs:
291 cabalconf="${cabalconf} --verbose" 304 cabalconf="${cabalconf} --verbose"
292 fi
293 # Note: with Cabal-1.1.6.x we do not have enough control
294 # to put the docs into the right place. They're currently going
295 # into /usr/share/${P}/ghc-x.y/doc/
296 # rather than /usr/share/doc/${PF}/
297 # Because we can only set the datadir, not the docdir.
298 305
299 # We build shared version of our Cabal where ghc ships it's shared 306 # We build shared version of our Cabal where ghc ships it's shared
300 # version of it. We will link ./setup as dynamic binary againt Cabal later. 307 # version of it. We will link ./setup as dynamic binary againt Cabal later.
301 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \ 308 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
302 $(ghc-supports-shared-libraries) && \ 309 $(ghc-supports-shared-libraries) && \
303 cabalconf="${cabalconf} --enable-shared" 310 cabalconf="${cabalconf} --enable-shared"
311
312 if $(ghc-supports-shared-libraries); then
313 # maybe a bit lower
314 if version_is_at_least "7.7.20121114" "$(ghc-version)"; then
315 cabalconf="${cabalconf} --enable-shared"
316 fi
317 fi
304 318
305 set -- configure \ 319 set -- configure \
306 --ghc --prefix="${EPREFIX}"/usr \ 320 --ghc --prefix="${EPREFIX}"/usr \
307 --with-compiler="$(ghc-getghc)" \ 321 --with-compiler="$(ghc-getghc)" \
308 --with-hc-pkg="$(ghc-getghcpkg)" \ 322 --with-hc-pkg="$(ghc-getghcpkg)" \
335 ./setup "$@" || die "setup copy failed" 349 ./setup "$@" || die "setup copy failed"
336 350
337 # cabal is a bit eager about creating dirs, 351 # cabal is a bit eager about creating dirs,
338 # so remove them if they are empty 352 # so remove them if they are empty
339 rmdir "${ED}/usr/bin" 2> /dev/null 353 rmdir "${ED}/usr/bin" 2> /dev/null
340
341 # GHC 6.4 has a bug in get/setPermission and Cabal 1.1.1 has
342 # no workaround.
343 # set the +x permission on executables
344 if [[ -d "${ED}/usr/bin" ]] ; then
345 chmod +x "${ED}/usr/bin/"*
346 fi
347 # TODO: do we still need this?
348} 354}
349 355
350cabal-pkg() { 356cabal-pkg() {
351 # This does not actually register since we're using true instead 357 # This does not actually register since we're using true instead
352 # of ghc-pkg. So it just leaves the .installed-pkg-config and we can 358 # of ghc-pkg. So it just leaves the .conf file and we can
353 # register that ourselves (if it exists). 359 # register that ourselves (if it exists).
354 local result
355 local err
356 360
357 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then 361 if [[ -n ${CABAL_HAS_LIBRARIES} ]]; then
358 if version_is_at_least "1.2.0" "$(cabal-version)"; then
359 # Newer cabal can generate a package conf for us: 362 # Newer cabal can generate a package conf for us:
360 ./setup register --gen-pkg-config="${T}/${P}.conf" 363 ./setup register --gen-pkg-config="${T}/${P}.conf"
361 ghc-setup-pkg "${T}/${P}.conf" 364 ghc-setup-pkg "${T}/${P}.conf"
362 ghc-install-pkg 365 ghc-install-pkg
363 else
364 # With older cabal we have to hack it by replacing its ghc-pkg
365 # with true and then just picking up the .installed-pkg-config
366 # file and registering that ourselves (if it exists).
367 sed -i "s|$(ghc-getghcpkg)|$(type -P true)|" .setup-config
368 ./setup register || die "setup register failed"
369 if [[ -f .installed-pkg-config ]]; then
370 ghc-setup-pkg .installed-pkg-config
371 ghc-install-pkg
372 else
373 die "setup register has not generated a package configuration file"
374 fi
375 fi
376 fi 366 fi
377} 367}
378 368
379# Some cabal libs are bundled along with some versions of ghc 369# Some cabal libs are bundled along with some versions of ghc
380# eg filepath-1.0 comes with ghc-6.6.1 370# eg filepath-1.0 comes with ghc-6.6.1
384# However portage still records the dependency and we can upgrade the package 374# However portage still records the dependency and we can upgrade the package
385# to a later one that's not included with ghc. 375# to a later one that's not included with ghc.
386# You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1". 376# You can also put a space separated list, eg CABAL_CORE_LIB_GHC_PV="6.6 6.6.1".
387cabal-is-dummy-lib() { 377cabal-is-dummy-lib() {
388 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do 378 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
389 [[ "$(ghc-version)" == "$version" ]] && return 0 379 [[ "$(ghc-version)" == ${version} ]] && return 0
390 done 380 done
391 return 1 381 return 1
392} 382}
393 383
394# exported function: check if cabal is correctly installed for 384# exported function: check if cabal is correctly installed for
395# the currently active ghc (we cannot guarantee this with portage) 385# the currently active ghc (we cannot guarantee this with portage)
396haskell-cabal_pkg_setup() { 386haskell-cabal_pkg_setup() {
397 ghc-package_pkg_setup
398 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
399 eerror "The package dev-haskell/cabal is not correctly installed for"
400 eerror "the currently active version of ghc ($(ghc-version)). Please"
401 eerror "run ghc-updater or haskell-updater or re-build dev-haskell/cabal."
402 die "cabal is not correctly installed"
403 fi
404 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then 387 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
405 eerror "QA: Neither bin nor lib are in CABAL_FEATURES." 388 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
406 fi 389 fi
407 if [[ -n "${CABAL_UNKNOWN}" ]]; then 390 if [[ -n "${CABAL_UNKNOWN}" ]]; then
408 ewarn "Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}" 391 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
409 fi 392 fi
410 if cabal-is-dummy-lib; then 393 if cabal-is-dummy-lib; then
411 einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install." 394 einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
412 fi 395 fi
413} 396}
414 397
415haskell-cabal_src_configure() { 398haskell-cabal_src_configure() {
416 if ! cabal-is-dummy-lib; then 399 cabal-is-dummy-lib && return
400
417 pushd "${S}" > /dev/null 401 pushd "${S}" > /dev/null
418 402
419 cabal-bootstrap 403 cabal-bootstrap
420 404
421 cabal-configure "$@" 405 cabal-configure "$@"
422 406
423 popd > /dev/null 407 popd > /dev/null
424 fi
425} 408}
426 409
427# exported function: nice alias 410# exported function: nice alias
428cabal_src_configure() { 411cabal_src_configure() {
429 haskell-cabal_src_configure "$@" 412 haskell-cabal_src_configure "$@"
436 # Such error leads to default src_configure and we lose all passed flags. 419 # Such error leads to default src_configure and we lose all passed flags.
437 if ! has "${EAPI:-0}" 0 1; then 420 if ! has "${EAPI:-0}" 0 1; then
438 local passed_flag 421 local passed_flag
439 for passed_flag in "$@"; do 422 for passed_flag in "$@"; do
440 [[ ${passed_flag} == --flags=* ]] && \ 423 [[ ${passed_flag} == --flags=* ]] && \
441 eqawarn "Cabal option '${passed_flag}' has effect only in src_configure()" 424 eqawarn "QA Notice: Cabal option '${passed_flag}' has effect only in src_configure()"
442 done 425 done
443 fi 426 fi
444 427
445 if ! cabal-is-dummy-lib; then 428 cabal-is-dummy-lib && return
429
446 has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@" 430 has src_configure ${HASKELL_CABAL_EXPF} || haskell-cabal_src_configure "$@"
447 cabal-build 431 cabal-build
448 432
449 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then 433 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then
450 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then 434 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
451 # hscolour and haddock 435 # hscolour and haddock
452 cabal-hscolour-haddock 436 cabal-hscolour-haddock
453 else
454 # just haddock
455 cabal-haddock
456 fi
457 else 437 else
438 # just haddock
439 cabal-haddock
440 fi
441 else
458 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then 442 if [[ -n "${CABAL_USE_HSCOLOUR}" ]] && use hscolour; then
459 # just hscolour 443 # just hscolour
460 cabal-hscolour 444 cabal-hscolour
461 fi
462 fi 445 fi
463 fi 446 fi
464} 447}
465 448
466haskell-cabal_src_compile() { 449haskell-cabal_src_compile() {
488 471
489# exported function: cabal-style copy and register 472# exported function: cabal-style copy and register
490cabal_src_install() { 473cabal_src_install() {
491 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX= 474 has "${EAPI:-0}" 0 1 2 && ! use prefix && EPREFIX=
492 475
493 if cabal-is-dummy-lib; then 476 if ! cabal-is-dummy-lib; then
494 # create a dummy local package conf file for the sake of ghc-updater
495 local ghc_confdir_with_prefix="$(ghc-confdir)"
496 # remove EPREFIX
497 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
498 echo '[]' > "${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
499 else
500 cabal-copy 477 cabal-copy
501 cabal-pkg 478 cabal-pkg
479 fi
502 480
503 if [[ -n "${CABAL_USE_HADDOCK}" ]] && use doc; then 481 # create a dummy local package conf file for haskell-updater
504 if ! version_is_at_least "1.1.6" "$(cabal-version)"; then 482 # if it does not exist (dummy libraries and binaries w/o libraries)
505 dohtml -r dist/doc/html/* 483 local ghc_confdir_with_prefix="$(ghc-confdir)"
484 # remove EPREFIX
485 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
486 local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
487 [[ -e $conf_file ]] || echo '[]' > "$conf_file" || die
488
489 # make sure installed packages do not destroy ghc's
490 # bundled packages
491 local initial_pkg_db=${ROOT}/$(ghc-libdir)/package.conf.d.initial
492 if [[ -e ${initial_pkg_db} ]]; then
493 local checked_pkg
494 for checked_pkg in $(ghc-listpkg "${conf_file}")
495 do
496 local initial_pkg
497 for initial_pkg in $(ghc-listpkg "${initial_pkg_db}"); do
498 if [[ ${checked_pkg} = ${initial_pkg} ]]; then
499 eerror "Package ${checked_pkg} is shipped with $(ghc-version)."
500 eerror "Ebuild author forgot CABAL_CORE_LIB_GHC_PV entry."
501 eerror "Found in ${initial_pkg_db}."
502 die
506 fi 503 fi
507 fi 504 done
505 done
508 fi 506 fi
509} 507}
510 508
511haskell-cabal_src_install() { 509haskell-cabal_src_install() {
512 pushd "${S}" > /dev/null 510 pushd "${S}" > /dev/null
541 echo "--flags=-${UWORD}" 539 echo "--flags=-${UWORD}"
542 fi 540 fi
543 541
544 return 0 542 return 0
545} 543}
544
545# @FUNCTION: cabal_chdeps
546# @DESCRIPTION:
547# Allows easier patching of $CABAL_FILE (${S}/${PN}.cabal by default)
548# depends
549#
550# Accepts argument list as pairs of substitutions: <from-string> <to-string>...
551#
552# Dies on error.
553#
554# Usage examples:
555#
556# src_prepare() {
557# cabal_chdeps \
558# 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7' \
559# 'containers ==0.4.*' 'containers >= 0.4 && < 0.6'
560#}
561# or
562# src_prepare() {
563# CABAL_FILE=${S}/${MY_PN}.cabal cabal_chdeps \
564# 'base >= 4.2 && < 4.6' 'base >= 4.2 && < 4.7'
565# CABAL_FILE=${S}/${MY_PN}-tools.cabal cabal_chdeps \
566# 'base == 3.*' 'base >= 4.2 && < 4.7'
567#}
568#
569cabal_chdeps() {
570 local cf=${CABAL_FILE:-${S}/${PN}.cabal}
571 local from_ss # ss - substring
572 local to_ss
573 local orig_c # c - contents
574 local new_c
575
576 [[ -f $cf ]] || die "cabal file '$cf' does not exist"
577
578 orig_c=$(< "$cf")
579
580 while :; do
581 from_pat=$1
582 to_str=$2
583 einfo "CHDEP: '${from_pat}' -> '${to_str}'"
584
585 [[ -n ${from_pat} ]] || break
586 [[ -n ${to_str} ]] || die "'${from_str}' does not have 'to' part"
587
588 # escape pattern-like symbols
589 from_pat=${from_pat//\*/\\*}
590 from_pat=${from_pat//\[/\\[}
591
592 new_c=${orig_c//${from_pat}/${to_str}}
593
594 if [[ -n $CABAL_DEBUG_LOOSENING ]]; then
595 echo "${orig_c}" >"${T}/${cf}".pre
596 echo "${new_c}" >"${T}/${cf}".post
597 diff -u "${T}/${cf}".{pre,post}
598 fi
599
600 [[ "${orig_c}" == "${new_c}" ]] && die "no trigger for '${from_ss}'"
601 orig_c=${new_c}
602 shift
603 shift
604 done
605
606 echo "${new_c}" > "$cf" ||
607 die "failed to update"
608}

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