dev-lang/ghc-bin: add SLOT 8.4.3

packages/dev-lang/ghc-bin/ghc-bin-8.4.3.exheres-0

@@ -0,0 +1,91 @@
+# Copyright 2018 Julian Ospald <hasufell@posteo.de>
+# Distributed under the terms of the GNU General Public License v2
+
+require bash-completion alternatives
+
+SUMMARY="The Glorious Glasgow Haskell Compilation System"
+DESCRIPTION="
+GHC is a state-of-the-art, open source, compiler and interactive environment for the functional
+language Haskell."
+HOMEPAGE="https://www.haskell.org/ghc/"
+DOWNLOADS="https://downloads.haskell.org/~ghc/${PV}/ghc-${PV}-x86_64-fedora27-linux.tar.xz"
+
+LICENCES="BSD-3"
+SLOT="${PV}"
+PLATFORMS="-* ~amd64"
+MYOPTIONS=""
+
+DEPENDENCIES="
+    build+run:
+        dev-lang/perl:*[>=5.6.1]
+        dev-libs/gmp[>=6.1] [[ note = [ depends on libgmp.so.10 ] ]]
+        sys-libs/ncurses[>=6.1-r2] [[ note = [ Only these include libtinfo.so symlinks ] ]]
+        !dev-lang/ghc [[
+            description = [ Both install the same binaries/libs and alternatives ]
+            resolution = uninstall-blocked-before
+        ]]
+    suggestion:
+        dev-lang/llvm[>=2.7] [[ description = [ LLVM can be used for code generation and linking ] ]]
+"
+
+BUGS_TO="hasufell@posteo.de"
+REMOTE_IDS="freecode:${PN}"
+UPSTREAM_RELEASE_NOTES="http://www.haskell.org/${PN}/docs/${PV}/html/users_guide/release-${PV//./-}.html"
+
+RESTRICT="test"
+
+WORK=${WORKBASE}/ghc-${PV}
+
+src_configure() {
+    econf \
+        --target=$(exhost --target)
+}
+
+src_compile() {
+    :
+}
+
+src_install() {
+    default
+
+    # bashcomp
+    dobashcompletion "${FILES}/ghc-bash-completion"
+    alternatives_for ghc ${SLOT} ${SLOT} \
+        /usr/share/bash-completion/completions/ghc-bin{,-${SLOT}}
+
+    # some scripts are not versioned, move
+    edo mv "${IMAGE}"/usr/$(exhost --target)/bin/{hp2ps,hp2ps-${SLOT}}
+    edo mv "${IMAGE}"/usr/$(exhost --target)/bin/{hpc,hpc-${SLOT}}
+    edo mv "${IMAGE}"/usr/$(exhost --target)/bin/{hsc2hs,hsc2hs-${SLOT}}
+
+    # remove unversioned symlinks, we create alternatives later
+    local ghc_bin
+    for ghc_bin in ghc ghci ghc-pkg haddock runghc runhaskell ; do
+        edo rm "${IMAGE}"/usr/$(exhost --target)/bin/${ghc_bin}
+    done
+    unset ghc_bin
+
+    # create alternatives for scripts/binaries
+    alternatives_for ghc ${SLOT} ${SLOT} \
+        /usr/$(exhost --target)/bin/ghc{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/ghci{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/ghc-pkg{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/haddock{,-ghc-${SLOT}} \
+        /usr/$(exhost --target)/bin/hp2ps{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/hpc{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/hsc2hs{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/runghc{,-${SLOT}} \
+        /usr/$(exhost --target)/bin/runhaskell /usr/$(exhost --target)/bin/runghc-${SLOT}
+
+    # alternatives for manpages
+    local file alternatives=()
+    for file in "${IMAGE}"/usr/share/man/*/*; do
+        alternatives+=(
+            ${file#${IMAGE}}
+            ${file#${IMAGE}}-${SLOT}
+        )
+    done
+    alternatives_for \
+        ghc ${SLOT} ${SLOT} \
+        "${alternatives[@]}"
+}