if [ -n "${_darcstrunk}" -a -n "${_darcsmod}" ] ; then
      [ $(type -p darcs) ] || return 0
      msg "$(gettext "Determining latest darcs revision...")"
      newpkgver=$(date +%Y%m%d)
    elif [ -n "${_cvsroot}" -a -n "${_cvsmod}" ] ; then
      [ $(type -p cvs) ] || return 0
      msg "$(gettext "Determining latest cvs revision...")"
      newpkgver=$(date +%Y%m%d)
    elif [ -n "${_gitroot}" -a -n "${_gitname}" ] ; then
      [ $(type -p git) ] || return 0
      msg "$(gettext "Determining latest git revision...")"
      newpkgver=$(date +%Y%m%d)
    elif [ -n "${_svntrunk}" -a -n "${_svnmod}" ] ; then
      [ $(type -p svn) ] || return 0
      msg "$(gettext "Determining latest svn revision...")"
      newpkgver=$(LC_ALL=C svn info $_svntrunk | sed -n 's/^Last Changed Rev: \([0-9]*\)$/\1/p')
    elif [ -n "${_bzrtrunk}" -a -n "${_bzrmod}" ] ; then
      [ $(type -p bzr) ] || return 0
      msg "$(gettext "Determining latest bzr revision...")"
      newpkgver=$(bzr revno ${_bzrtrunk})
    elif [ -n "${_hgroot}" -a -n "${_hgrepo}" ] ; then
      [ $(type -p hg) ] || return 0
      msg "$(gettext "Determining latest hg revision...")"
      if [ -d ./src/$_hgrepo ] ; then
        cd ./src/$_hgrepo
        hg pull
        hg update
      else
        [[ ! -d ./src/ ]] && mkdir ./src/
        hg clone $_hgroot/$_hgrepo ./src/$_hgrepo
        cd ./src/$_hgrepo
      fi
      newpkgver=$(hg tip --template "{rev}")
      cd ../../
    fi