Tweak exit code for 'ghcup install'

If a GHC is already installed, we shouldn't treat it as an error.
2018-12-01 13:35:35 +08:00 · 2018-12-01 13:35:35 +08:00 · 4c548c1037
commit 4c548c1037
parent 717a8256a6
1 changed files with 2 additions and 1 deletions
--- a/3
+++ b/3
@ -1186,7 +1186,8 @@ install_ghc() {
        if ${FORCE} ; then
            echo "GHC already installed in ${inst_location}, overwriting!"
        else
-            die "GHC already installed in ${inst_location}, use --force to overwrite"
+            warning_message "GHC already installed in ${inst_location}, use --force to overwrite"
+            exit 0
        fi
        first_install=false
    fi