lazy_source () {
    eval "$1 () { [ -f $2 ] && source $2 && $1 \$@ }"
}

lazy_source zgen ${HOME}/.zsh/zgen/zgen.zsh
if ! source "$HOME/.zgen/init.zsh"; then
    zgen load t413/zsh-background-notify
    zgen load rimraf/k
    zgen load tarrasch/zsh-bd
    zgen load zsh-users/zsh-syntax-highlighting
    zgen load zsh-users/zaw
    zgen load "${HOME}/.zsh"

    zgen save
fi