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# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=5
# haddock feature is explicitely disabled, as this library can be used as haddock depend
CABAL_FEATURES="lib profile"
inherit haskell-cabal
DESCRIPTION="Knowledge of GHC's installation directories"
HOMEPAGE="http://hackage.haskell.org/package/ghc-paths"
SRC_URI="https://hackage.haskell.org/package/${P}/${P}.tar.gz"
LICENSE="BSD"
SLOT="0"
KEYWORDS="amd64 ~ia64 ppc ppc64 sparc x86"
IUSE=""
RDEPEND=">=dev-lang/ghc-6.8.2:="
DEPEND="${RDEPEND}
>=dev-haskell/cabal-1.6"
src_prepare() {
# ghc-patch it has awfully unportable (across cabal versions) ghc detection code
# but in gentoo we install it to fixed patch, so remove Setup.hs detection code
cabal-mksetup
# and use gentoo's hardcoded one:
# a few things we need to replace, and example values
# GHC_PATHS_LIBDIR /usr/lib64/ghc-6.12.0.20091010
# GHC_PATHS_DOCDIR /usr/share/doc/ghc-6.12.0.20091010/html
# GHC_PATHS_GHC_PKG /usr/bin/ghc-pkg
# GHC_PATHS_GHC /usr/bin/ghc (be careful: GHC_PATHS_GHC is a substring of GHC_PATHS_GHC_PKG)
cat >"${S}/GHC/Paths.hs" <<-EOF
module GHC.Paths ( ghc, ghc_pkg, libdir, docdir ) where
libdir, docdir, ghc, ghc_pkg :: FilePath
libdir = "$(ghc-libdir)"
docdir = "/usr/share/doc/ghc-$(ghc-version)/html"
ghc = "$(ghc-getghc)"
ghc_pkg = "$(ghc-getghcpkg)"
EOF
}
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