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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 1.30 2012/04/14 19:30:53 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).
34# test-suite -- add support for cabal test-suites (introduced in Cabal-1.8)
33 35
34inherit ghc-package multilib 36inherit ghc-package multilib
35 37
36# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS 38# @ECLASS-VARIABLE: CABAL_EXTRA_CONFIGURE_FLAGS
37# @DESCRIPTION: 39# @DESCRIPTION:
51# _only_ 'setup' binary bootstrap. 53# _only_ 'setup' binary bootstrap.
52# example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make 54# example: /etc/make.conf: GHC_BOOTSTRAP_FLAGS=-dynamic to make
53# linking 'setup' faster. 55# linking 'setup' faster.
54: ${GHC_BOOTSTRAP_FLAGS:=} 56: ${GHC_BOOTSTRAP_FLAGS:=}
55 57
58# @ECLASS-VARIABLE: CABAL_DEBUG_LOOSENING
59# @DESCRIPTION:
60# Show debug output for 'cabal_chdeps' function if set.
61# Needs working 'diff'.
62: ${CABAL_DEBUG_LOOSENING:=}
63
56HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install" 64HASKELL_CABAL_EXPF="pkg_setup src_compile src_test src_install"
57 65
58case "${EAPI:-0}" in 66case "${EAPI:-0}" in
59 2|3|4) HASKELL_CABAL_EXPF+=" src_configure" ;; 67 2|3|4|5) HASKELL_CABAL_EXPF+=" src_configure" ;;
60 *) ;; 68 *) ;;
61esac 69esac
62 70
63EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF} 71EXPORT_FUNCTIONS ${HASKELL_CABAL_EXPF}
64 72
74 profile) CABAL_USE_PROFILE=yes;; 82 profile) CABAL_USE_PROFILE=yes;;
75 bootstrap) CABAL_BOOTSTRAP=yes;; 83 bootstrap) CABAL_BOOTSTRAP=yes;;
76 bin) CABAL_HAS_BINARIES=yes;; 84 bin) CABAL_HAS_BINARIES=yes;;
77 lib) CABAL_HAS_LIBRARIES=yes;; 85 lib) CABAL_HAS_LIBRARIES=yes;;
78 nocabaldep) CABAL_FROM_GHC=yes;; 86 nocabaldep) CABAL_FROM_GHC=yes;;
87 test-suite) CABAL_TEST_SUITE=yes;;
79 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";; 88 *) CABAL_UNKNOWN="${CABAL_UNKNOWN} ${feature}";;
80 esac 89 esac
81done 90done
82 91
83if [[ -n "${CABAL_USE_HADDOCK}" ]]; then 92if [[ -n "${CABAL_USE_HADDOCK}" ]]; then
108 DEPEND="${DEPEND} dev-haskell/cpphs" 117 DEPEND="${DEPEND} dev-haskell/cpphs"
109fi 118fi
110 119
111if [[ -n "${CABAL_USE_PROFILE}" ]]; then 120if [[ -n "${CABAL_USE_PROFILE}" ]]; then
112 IUSE="${IUSE} profile" 121 IUSE="${IUSE} profile"
122fi
123
124if [[ -n "${CABAL_TEST_SUITE}" ]]; then
125 IUSE="${IUSE} test"
113fi 126fi
114 127
115# 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
116# 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.
117if [[ -z ${CABAL_MIN_VERSION} ]]; then 130if [[ -z ${CABAL_MIN_VERSION} ]]; then
156 setupmodule="${S}/Setup.hs" 169 setupmodule="${S}/Setup.hs"
157 else 170 else
158 die "No Setup.lhs or Setup.hs found" 171 die "No Setup.lhs or Setup.hs found"
159 fi 172 fi
160 173
174 if [[ -z "${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 ($(ghc-version)). Please"
177 eerror "run haskell-updater or re-build dev-haskell/cabal."
178 die "cabal is not correctly installed"
179 fi
180
161 # We build the setup program using the latest version of 181 # We build the setup program using the latest version of
162 # cabal that we have installed 182 # cabal that we have installed
163 cabalpackage=Cabal-$(cabal-version) 183 cabalpackage=Cabal-$(cabal-version)
164 einfo "Using cabal-$(cabal-version)." 184 einfo "Using cabal-$(cabal-version)."
165 185
172 $(ghc-getghc) "$@" 192 $(ghc-getghc) "$@"
173 } 193 }
174 if $(ghc-supports-shared-libraries); then 194 if $(ghc-supports-shared-libraries); then
175 # # some custom build systems might use external libraries, 195 # # some custom build systems might use external libraries,
176 # # for which we don't have shared libs, so keep static fallback 196 # # for which we don't have shared libs, so keep static fallback
177 # Disabled '-dynamic' as ghc does not embed RPATH to used extra-libraries:
178 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3 197 # bug #411789, http://hackage.haskell.org/trac/ghc/ticket/5743#comment:3
179 # make_setup -dynamic "$@" || 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; } ||
180 make_setup "$@" || die "compiling ${setupmodule} failed" 210 make_setup "$@" || die "compiling ${setupmodule} failed"
181 else 211 else
182 make_setup "$@" || die "compiling ${setupmodule} failed" 212 make_setup "$@" || die "compiling ${setupmodule} failed"
183 fi 213 fi
184} 214}
237 if [[ -n "${CABAL_USE_C2HS}" ]]; then 267 if [[ -n "${CABAL_USE_C2HS}" ]]; then
238 cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs" 268 cabalconf="${cabalconf} --with-c2hs=${EPREFIX}/usr/bin/c2hs"
239 fi 269 fi
240 if [[ -n "${CABAL_USE_CPPHS}" ]]; then 270 if [[ -n "${CABAL_USE_CPPHS}" ]]; then
241 cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs" 271 cabalconf="${cabalconf} --with-cpphs=${EPREFIX}/usr/bin/cpphs"
272 fi
273 if [[ -n "${CABAL_TEST_SUITE}" ]]; then
274 cabalconf="${cabalconf} $(use_enable test tests)"
242 fi 275 fi
243 276
244 local option 277 local option
245 for option in ${HCFLAGS} 278 for option in ${HCFLAGS}
246 do 279 do
273 # 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
274 # 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.
275 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \ 308 [[ ${CATEGORY}/${PN} == "dev-haskell/cabal" ]] && \
276 $(ghc-supports-shared-libraries) && \ 309 $(ghc-supports-shared-libraries) && \
277 cabalconf="${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="${cabalconf} --enable-shared"
316 fi
317 fi
278 318
279 set -- configure \ 319 set -- configure \
280 --ghc --prefix="${EPREFIX}"/usr \ 320 --ghc --prefix="${EPREFIX}"/usr \
281 --with-compiler="$(ghc-getghc)" \ 321 --with-compiler="$(ghc-getghc)" \
282 --with-hc-pkg="$(ghc-getghcpkg)" \ 322 --with-hc-pkg="$(ghc-getghcpkg)" \
334# 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
335# to a later one that's not included with ghc. 375# to a later one that's not included with ghc.
336# 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".
337cabal-is-dummy-lib() { 377cabal-is-dummy-lib() {
338 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do 378 for version in ${CABAL_CORE_LIB_GHC_PV[*]}; do
339 [[ "$(ghc-version)" == "$version" ]] && return 0 379 [[ "$(ghc-version)" == ${version} ]] && return 0
340 done 380 done
341 return 1 381 return 1
342} 382}
343 383
344# exported function: check if cabal is correctly installed for 384# exported function: check if cabal is correctly installed for
345# the currently active ghc (we cannot guarantee this with portage) 385# the currently active ghc (we cannot guarantee this with portage)
346haskell-cabal_pkg_setup() { 386haskell-cabal_pkg_setup() {
347 if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
348 eerror "The package dev-haskell/cabal is not correctly installed for"
349 eerror "the currently active version of ghc ($(ghc-version)). Please"
350 eerror "run haskell-updater or re-build dev-haskell/cabal."
351 die "cabal is not correctly installed"
352 fi
353 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then 387 if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
354 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES." 388 eqawarn "QA Notice: Neither bin nor lib are in CABAL_FEATURES."
355 fi 389 fi
356 if [[ -n "${CABAL_UNKNOWN}" ]]; then 390 if [[ -n "${CABAL_UNKNOWN}" ]]; then
357 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}" 391 eqawarn "QA Notice: Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"
449 local ghc_confdir_with_prefix="$(ghc-confdir)" 483 local ghc_confdir_with_prefix="$(ghc-confdir)"
450 # remove EPREFIX 484 # remove EPREFIX
451 dodir ${ghc_confdir_with_prefix#${EPREFIX}} 485 dodir ${ghc_confdir_with_prefix#${EPREFIX}}
452 local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)" 486 local conf_file="${D}/$(ghc-confdir)/$(ghc-localpkgconf)"
453 [[ -e $conf_file ]] || echo '[]' > "$conf_file" || die 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 ${initial_pkg_db}."
502 die
503 fi
504 done
505 done
506 fi
454} 507}
455 508
456haskell-cabal_src_install() { 509haskell-cabal_src_install() {
457 pushd "${S}" > /dev/null 510 pushd "${S}" > /dev/null
458 511
486 echo "--flags=-${UWORD}" 539 echo "--flags=-${UWORD}"
487 fi 540 fi
488 541
489 return 0 542 return 0
490} 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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