self-update inplace

This commit is contained in:
Sam Halliday 2018-10-15 10:07:00 +01:00
parent e2f85dc17e
commit fafb9bbf9d

26
ghcup
View File

@ -105,7 +105,11 @@ KNOWN_GOOD_CABAL="2.2.0.0"
# How many jobs to use for compiling GHC.
JOBS="1"
# @VARIABLE: SOURCE
# @DESCRIPTION:
# The $0 argument, which contains
# the script name.
SOURCE="$0"
####################
#--[ Print Help ]--#
@ -682,6 +686,24 @@ set_ghc() {
#--[ Subcommand self-update ]--#
################################
# @FUNCTION: script_dir
# @DESCRIPTION:
# Portably gets the full directory of where
# this script resides in and prints it to stdout.
# @STDOUT: script directory
script_dir() {
mysource=${SOURCE}
while [ -h "${mysource}" ]; do
mydir="$( cd -P "$( dirname "${mysource}" )" > /dev/null && pwd )"
mysource="$(readlink "${mysource}")"
[ "${mysource%${mysource#?}}"x != '/x' ] && mysource="${mydir}/${mysource}"
done
mydir="$( cd -P "$( dirname "${mysource}" )" > /dev/null && pwd )"
echo "${mydir}"
unset mysource mydir
}
# @FUNCTION: self_update
# @USAGE: <install-location>
@ -994,7 +1016,7 @@ while [ $# -gt 0 ] ; do
if [ "${TARGET_LOCATION}" ] ; then
self_update "${TARGET_LOCATION}"
else
self_update "${HOME}/.local/bin"
self_update "$(script_dir)"
fi
break;;
show)