THIS_JRE='java-11-openjdk' fix_default() { if [ ! -x /usr/bin/java ]; then /usr/bin/archlinux-java unset echo "" else /usr/bin/archlinux-java get fi } post_install() { default=$(fix_default) case ${default} in "") /usr/bin/archlinux-java set ${THIS_JRE} ;; ${THIS_JRE}) # Nothing ;; *) echo "Default Java environment is already set to '${default}'" echo "See 'archlinux-java help' to change it" ;; esac echo "when you use a non-reparenting window manager," echo "set _JAVA_AWT_WM_NONREPARENTING=1 in /etc/profile.d/jre.sh" } post_upgrade() { if [ -z "$(fix_default)" ]; then /usr/bin/archlinux-java set ${THIS_JRE} fi }