diff --git a/packages/dev-lang/GHC/GHC-8.4.3.exheres-0 b/packages/dev-lang/GHC/GHC-8.4.3.exheres-0
new file mode 100644
index 0000000..e4a6d42
--- /dev/null
+++ b/packages/dev-lang/GHC/GHC-8.4.3.exheres-0
@@ -0,0 +1,176 @@
+# Copyright 2008 Santiago M. Mola
+# Copyright 2008, 2009, 2010, 2011 Ingmar Vanhassel
+# Copyright 2011 Markus Rothe
+# Distributed under the terms of the GNU General Public License v2
+# Based in part upon 'ghc-6.8.2.ebuild' from Gentoo, which is:
+#     Copyright 1999-2008 Gentoo Foundation
+# Copyright 2018 Julian Ospald <hasufell@posteo.de>
+
+MY_PN="ghc"
+MY_PNV="${MY_PN}-${PV}"
+MY_PNVR="${MY_PN}-${PVR}"
+
+require bash-completion flag-o-matic alternatives
+require autotools [ supported_autoconf=[ 2.5 ] supported_automake=[ 1.15 ] ]
+
+SUMMARY="The Glorious Glasgow Haskell Compilation System (non-haskell packages version)"
+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/${PV}/${MY_PNV}-src.tar.xz
+    https://downloads.haskell.org/~ghc/${PV}/${MY_PNV}-testsuite.tar.xz
+    https://downloads.haskell.org/~ghc/${PV}/ghc-${PV}-x86_64-fedora27-linux.tar.xz
+"
+
+PLATFORMS="-* ~amd64"
+
+BUGS_TO=""
+REMOTE_IDS="freecode:${MY_PN}"
+UPSTREAM_RELEASE_NOTES="http://www.haskell.org/${MY_PN}/docs/${PV}/html/users_guide/release-${PV//./-}.html"
+
+LICENCES="BSD-3"
+SLOT="${PV}"
+MYOPTIONS="
+    doc
+    llvm [[ description = [ Code generation using LLVM ] ]]
+"
+
+# `make test` takes really long, so disable it. It also succeeds (i.e. returned value is zero) in
+# case of unexpected failures. There are always unexpected failures.
+# If you really want to run the tests, then enable expensive tests in order to run `make fulltest`,
+# which runs the same tests as `make test`, but includes more test cases per test.
+RESTRICT="test"
+
+DEPENDENCIES="
+    build:
+        dev-libs/libxslt[>=1.1.2]
+        dev-python/Sphinx
+    build+run:
+        dev-lang/perl:*[>=5.6.1]
+        dev-libs/gmp:=[>=5]
+        dev-libs/libedit
+        dev-libs/libffi
+        llvm? ( dev-lang/llvm[>=2.7] )
+        !dev-lang/ghc [[ resolution = uninstall-blocked-before ]]
+        !dev-lang/ghc-bin [[ resolution = uninstall-blocked-before ]]
+"
+
+WORK=${WORKBASE}/${MY_PNV}
+
+src_unpack() {
+    unpack ghc-${PV}-x86_64-fedora27-linux.tar.xz
+    edo mv "${WORK}" "${WORK}-pre"
+    unpack ${MY_PNV}-src.tar.xz
+    unpack ${MY_PNV}-testsuite.tar.xz
+}
+
+src_prepare() {
+    # prepare pre-built ghc
+    edo pushd "${WORK}-pre"
+    edo ./configure \
+        --prefix="${TEMP}/ghc-pre" \
+        --target=$(exhost --target)
+    emake install
+    edo popd
+
+    autotools_src_prepare
+}
+
+src_configure() {
+    # Initialize build.mk
+    echo '# Exherbo changes' > mk/build.mk
+
+    cat <<EOF >> mk/build.mk
+# Put docs into the right place
+docdir = /usr/share/doc/${MY_PNVR}
+htmldir = /usr/share/doc/${MY_PNVR}/html
+EOF
+
+    if option doc; then
+        echo "BUILD_SPHINX_HTML=YES" >> mk/build.mk
+        echo "BUILD_SPHINX_PDF=NO" >> mk/build.mk
+        echo "HADDOCK_DOCS=YES" >> mk/build.mk
+    else
+        echo "BUILD_SPHINX_HTML=NO" >> mk/build.mk
+        echo "BUILD_SPHINX_PDF=NO" >> mk/build.mk
+        echo "HADDOCK_DOCS=NO" >> mk/build.mk
+    fi
+
+    GHC_SRC_CONFIGURE_OPTIONS+=( --with-ghc=${TEMP}/ghc-pre/bin/ghc )
+    export PATH="${WORKBASE}/usr/bin:${PATH}"
+
+    if option llvm; then
+        echo "GhcWithLlvmCodeGen=YES" >> mk/build.mk
+    else
+        echo "GhcWithLlvmCodeGen=NO" >> mk/build.mk
+    fi
+
+    GHC_SRC_CONFIGURE_OPTIONS+=(
+        --with-system-libffi
+        --with-ffi-includes=$(${PKG_CONFIG} --variable includedir libffi)
+    )
+
+    # host and build cause compilation (at least for 7.6.1) to fail, as they're intended for
+    # cross-compilation.
+    econf \
+        AR=${AR} \
+        CC=${CC} \
+        --target=$(exhost --target) \
+        "${GHC_SRC_CONFIGURE_OPTIONS[@]}"
+
+    # don't strip anything. Very useful when stage2 SIGSEGVs on you
+    echo "STRIP_CMD = :" >> mk/build.mk
+}
+
+src_install() {
+    default
+
+    # libraries/ is a partial dupe of the html/ dir hierarchy, but
+    # containing only LICENSE files
+    edo rm -rf "${IMAGE}"/usr/share/doc/${MY_PNVR}/{LICENSE,libraries}
+
+    dobashcompletion "${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 $(optionq doc && echo "haddock") runghc runhaskell ; do
+        edo rm "${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}} \
+        $(optionq doc &&  echo "/usr/$(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
+}
+
+src_test_expensive() {
+    emake fulltest
+}
+
diff --git a/packages/dev-lang/GHC/files/ghc-bash-completion b/packages/dev-lang/GHC/files/ghc-bash-completion
new file mode 100644
index 0000000..0ee2149
--- /dev/null
+++ b/packages/dev-lang/GHC/files/ghc-bash-completion
@@ -0,0 +1,218 @@
+# ghc-pkg command line completion for bash
+#
+# Copyright 2006-2007 Lennart Kolmodin <kolmodin@dtek.chalmers.se>
+
+_ghc-pkg-get-ghc-pkg()
+{
+    echo ghc-pkg
+}
+
+_ghc-pkg-pkg-fields()
+{
+    # usage: _ghc-pkg-pkg-fields pkg-id
+    #
+    # list all fields of the pkg-id
+
+    # same fields for all packages but different in different versions of
+    # ghc-pkg? this can probably be done better/faster
+
+    if [[ -z "$1" ]]; then
+        echo "usage: _ghc-pkg-pkg-fields pkg-id"
+        return 1
+    fi
+
+    local fields
+
+    fields="$( $(_ghc-pkg-get-ghc-pkg) describe $1 )"
+
+    #if [[ fields != *"cannot find package"* ]]; then
+    echo "$fields" | grep ".*:.*" | sed "s/^\(.*\):.*\$/\1/"
+    #fi
+}
+
+_ghc-pkg-pkg-ids()
+{
+    # usage: _ghc-pkg-pkg-ids
+    #
+    # simply lists all package ids known by ghc-pkg.
+    $(_ghc-pkg-get-ghc-pkg) list --simple-output
+}
+
+_ghc-pkg-pkgs()
+{
+    # usage: _ghc-pkg-pkgs [include-pkgs] [include-ids]
+    #
+    # with optional parameter include-pkgs it will list all packages known
+    # to ghc-pkg.
+    # with optional parameter include-ids it will list all package-ids known
+    # to ghc-pkg.
+    local pkgs
+    local result
+    pkgs=( $( _ghc-pkg-pkg-ids ) )
+    result=( )
+
+    local withPkgs="no" withIds="no"
+    while [[ -n "$1" ]]; do
+        case "$1" in
+            include-pkgs)
+                withPkgs="yes" ;;
+            include-ids)
+                withIds="yes" ;;
+            *)
+                echo "unknown parameter '$1' to _ghc-pkg-pkgs"
+                return 1 ;;
+        esac
+        shift
+    done
+
+    # user must supply either include-pkgs, include-ids or both
+    if [[ $withPkgs != "yes" && $withIds != "yes" ]]; then
+        echo "usage: _ghc-pkg-pkgs [include-pkgs] [include-ids]"
+        return 1
+    fi
+
+    # find all packages if the user requested them
+    if [[ $withPkgs == "yes" ]]; then
+        # O(n^2) algorithm to exclude duplicates
+        for p in ${pkgs[*]}; do
+            p="${p//-[0-9.]*/}"
+            for existing in ${result[*]}; do
+                if [[ "$existing" == "$p" ]]; then
+                    continue 2
+                fi
+            done
+            result=( "${result[@]}" "${p}" )
+        done
+    fi
+
+    # include all pkg-ids if requested
+    if [[ $withIds == "yes" ]]; then
+        result=( "${result[@]}" "${pkgs[@]}" )
+    fi
+
+    # we are finished, echo the result
+    echo "${result[*]}"
+
+    # happy ending
+    return 0
+}
+
+_ghc-pkg()
+{
+    local cur
+    cur=${COMP_WORDS[COMP_CWORD]}
+
+    COMPREPLY=()
+
+    local actions flags
+    actions='register update unregister expose hide list latest describe field'
+    dbflags="--user \
+        --global \
+        -f --package-conf= \
+        --global-conf="
+    registerflags="--force \
+        -g --auto-ghci-libs \
+        -D --define-name="
+    listflags="--simple-output"
+    flags="$dbflags \
+        $registerflags \
+        $listflags \
+        -? --help \
+        -V --version"
+
+    # if it's the users first word; complete it and return
+    if (($COMP_CWORD == 1)); then
+        COMPREPLY=( $( compgen -W "$actions $flags" -- $cur ) )
+        return 0
+    fi
+
+    # now we know we have at least one word written
+
+    local action="unknown" \
+          prev numwords \
+          cword act
+    prev=${COMP_WORDS[COMP_CWORD-1]}
+    numwords=${#COMP_WORDS[@]}
+
+    # find the action with O(n*m) algorithm
+    # where n = ${#COMP_WORDS[*]}
+    #       m = number of actions
+    for cword in ${COMP_WORDS[*]}; do
+        for act in $actions; do
+            if [[ "$cword" == "$act" ]]; then
+                action=$cword
+            fi
+        done
+    done
+
+    case $action in
+        register|update)
+            # we want to complete both flags and paths, how?
+            # we do it by checking if the user has started to write a flag
+            # or a path, and then decide what to complete.
+            # that is, to complete a flag, the user must start to write a '-'
+            if [[ "$cur" == -* ]]; then
+                # (we assume) it's the start of a flag
+                # set COMPREPLY to flags relevant to these actions
+                COMPREPLY=( $( compgen -W "$dbflags $registerflags" -- $cur ) )
+            fi
+            ;;
+        unregister|expose|hide|list|describe)
+            # all these actions can be completed with exactly one argument,
+            # a pkg-id.
+            COMPREPLY=( $( compgen -W "$dbflags" -- $cur ) )
+
+            # add special flags for some actions
+            if [[ "$action" == "list" ]]; then
+                COMPREPLY+=( $( compgen -W "$listflags" -- $cur ) )
+            fi
+
+            COMPREPLY+=( $( compgen -W "$( _ghc-pkg-pkgs include-ids )" -- $cur ) )
+            ;;
+        latest)
+            # complete only packages, not package ids
+            COMPREPLY=( $( compgen -W "$( _ghc-pkg-pkgs include-pkgs )" -- $cur ) )
+            ;;
+        field)
+            # we should always complete on the flags...
+            COMPREPLY=( $( compgen -W "$dbflags" -- $cur ) )
+
+            # then, we should either complete the package name or the field
+            # lets find out which one
+
+            # find the number of words in COMP_WORDS before COMP_CWORD that
+            # isn't flags. it should be 2 or 3 for us to complete it,
+            #   exactly 2 if we should complete the package name
+            #   exactly 3 if we should complete the field name
+            #   otherwise, don't do any additional completion except the
+            #   flags
+
+            # count the number of non flags up till the current word
+            local numnonflags=0 lastword i
+            for (( i=0 ; $i < $COMP_CWORD ; i++ )); do
+                if [[ ${COMP_WORDS[$i]} != -* ]]; then
+                    lastword=${COMP_WORDS[$i]}
+                    numnonflags=$(( ++numnonflags ))
+                fi
+            done
+
+            case $numnonflags in
+                2)
+                    # complete on pkg-ids
+                    COMPREPLY+=( $( compgen -W "$( _ghc-pkg-pkgs include-ids )" -- $cur ) ) ;;
+                3)
+                    # complete on fields
+                    COMPREPLY+=( $( compgen -W "$( _ghc-pkg-pkg-fields $lastword )" -- $cur ) ) ;;
+            esac
+            ;;
+        *)
+            # unknown action, not yet given by the user
+            # return all possible completions
+            COMPREPLY=( $( compgen -W "$actions $flags" -- $cur ) )
+            ;;
+    esac
+}
+
+complete -F _ghc-pkg -o default ghc-pkg
+
+# vim: set ft=sh tw=80 sw=4 et :