When FVWM and all/most above mentioned dependencies are met, NsCDE can be used. Present installation is very simple:

  $ su - || sudo -i
  # umask 0022
  # cd /tmp
  # wget https://github.com/NsCDE/NsCDE/archive/<version>.tar.gz
  # tar xpzf <version>.tar.gz
  # cp -rp NsCDE-<version>/NsCDE /opt

... and optionally:

  # cd /usr/local/bin || cd /usr/bin
  ln -s /opt/NsCDE/bin/nscde

That's it. NsCDE is installed.