Introduce major version symlinks wrt #101
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ghcup
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@ -1319,6 +1319,50 @@ show_cabal_installed() {
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}
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# @FUNCTION: get_full_ghc_ver
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# @USAGE: <ghcmajorversion>
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# @DESCRIPTION:
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# Get the latest full GHC version .
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get_full_ghc_ver() {
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[ -z "$1" ] && die "Internal error: no argument given to get_full_ghc_ver"
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mymajorghcver=$1
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latest_ghc=0
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for current_ghc in "${BIN_LOCATION}/ghc-${mymajorghcver}."* ; do
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[ -e "${current_ghc}" ] || break
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real_ghc=$(posix_realpath "${current_ghc}")
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real_ghc="$(basename "${real_ghc}" | sed 's#ghc-##')"
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if [ "$(expr "${real_ghc}" \> "${latest_ghc}")" = 1 ] ; then
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latest_ghc=${real_ghc}
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fi
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done
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if [ "${latest_ghc}" != 0 ] ; then
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printf "%s" "${latest_ghc}"
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fi
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unset mymajorghcver latest_ghc real_ghc current_ghc
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}
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# @FUNCTION: set_ghc_major
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# @USAGE: <ghcversion>
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# @DESCRIPTION:
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# Sets a ghc-x.y major version to the latest ghc-x.y.z if any is installed.
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set_ghc_major() {
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[ -z "$1" ] && die "Internal error: no argument given to set_ghc_major"
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full_ghc_ver="$(get_full_ghc_ver "${1%.*}")"
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if [ -z "${full_ghc_ver}" ] ; then
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die "Could not set GHC major symlink"
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fi
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set_ghc "${full_ghc_ver}" "-${1%.*}"
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unset full_ghc_ver
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}
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############################
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@ -1406,9 +1450,14 @@ install_ghc() {
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# shellcheck disable=SC2046
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edo ln $(optionv "-v") -sf ../ghc/"${myghcver}"/bin/runhaskell "${BIN_LOCATION}/runhaskell-${myghcver}"
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status_message "Done installing, run \"ghci-${myghcver}\" or set up your current GHC via: ${SCRIPT} set ${myghcver}"
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unset myghcver inst_location f download_url download_tarball_name first_install tmp_dir
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unset inst_location f download_url download_tarball_name first_install tmp_dir
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set_ghc_major "${myghcver}"
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unset myghcver
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}
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@ -1419,13 +1468,14 @@ install_ghc() {
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# @FUNCTION: set_ghc
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# @USAGE: <ghcversion>
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# @USAGE: <ghcversion> [target-suffix]
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# @DESCRIPTION:
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# Sets the current ghc version by creating symlinks.
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set_ghc() {
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[ -z "$1" ] && die "Internal error: no argument given to set_ghc"
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myghcver=$1
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target_suffix=$2
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inst_location=$(get_ghc_location "$1")
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[ -z "${inst_location}" ] && die "failed to get install location"
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@ -1436,23 +1486,24 @@ set_ghc() {
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for f in "${inst_location}"/bin/*-"${myghcver}" ; do
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[ -e "${f}" ] || die "Something went wrong, ${f} does not exist!"
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source_fn=$(basename "${f}")
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target_fn=$(echo "${source_fn}" | sed "s#-${myghcver}##")
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target_fn="$(echo "${source_fn}" | sed "s#-${myghcver}##")${target_suffix}"
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# shellcheck disable=SC2046
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edo ln $(optionv "-v") -sf ../ghc/"${myghcver}/bin/${source_fn}" "${BIN_LOCATION}/${target_fn}"
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unset source_fn target_fn
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done
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# shellcheck disable=SC2046
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edo ln $(optionv "-v") -sf runghc "${BIN_LOCATION}"/runhaskell
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edo ln $(optionv "-v") -sf "runghc${target_suffix}" "${BIN_LOCATION}/runhaskell${target_suffix}"
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# shellcheck disable=SC2046
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edo ln $(optionv "-v") -sf haddock-ghc "${BIN_LOCATION}"/haddock
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edo ln $(optionv "-v") -sf "haddock-ghc${target_suffix}" "${BIN_LOCATION}/haddock${target_suffix}"
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status_message "Done, make sure \"${BIN_LOCATION}\" is in your PATH!"
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unset myghcver inst_location f
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unset myghcver inst_location f target_suffix
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}
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############################
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#--[ Subcommand upgrade ]--#
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############################
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@ -1526,6 +1577,24 @@ rm_ghc() {
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status_message "Successfully removed GHC ${myghcver}."
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# Only run set_ghc_major if there is at least one 8.6.x version left for 8.6.
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if [ -n "$(get_full_ghc_ver "${myghcver%.*}")" ] ; then
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set_ghc_major "${myghcver}"
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fi
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if [ -h "${BIN_LOCATION}/ghc-${myghcver%.*}" ] && [ ! -e "${BIN_LOCATION}/ghc-${myghcver%.*}" ] ; then
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# TODO: known_tools is not very robust, but we want to avoid accidentially deleting
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# unrelated things (even if those are dangling symlinks)
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known_tools="ghc ghci ghc-pkg haddock haddock-ghc runghc runhaskell"
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# remove dangling symlinks for ghc, ghci, ...
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for t in ${known_tools} ; do
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if [ -h "${BIN_LOCATION}/${t}-${myghcver%.*}" ] && [ ! -e "${BIN_LOCATION}/${t}-${myghcver%.*}" ] ; then
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edo rm "${BIN_LOCATION}/${t}-${myghcver%.*}"
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fi
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done
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unset t known_tools
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fi
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if [ -h "${BIN_LOCATION}/ghc" ] && [ ! -e "${BIN_LOCATION}/ghc" ] ; then
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warning_message "Currently active GHC is a dangling symlink, removing..."
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@ -1705,7 +1774,11 @@ Also check https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Linux for
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status_message "Done installing, run \"ghci-${myghcver}\" or set up your current GHC via: ${SCRIPT} set ${myghcver}"
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unset myghcver bootstrap_ghc inst_location f download_url download_tarball_name tmp_dir
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unset bootstrap_ghc inst_location f download_url download_tarball_name tmp_dir
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set_ghc_major "${myghcver}"
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unset myghcver
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}
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