This example relies on Rust (programs: rustc, cargo)
and the following crates:
  - gettext-rs (not 'gettext', not 'xtr'),
  - formatx (not 'strfmt').

Installation:
  ./autogen.sh
  ./configure --prefix=/some/prefix
  make
  make install
Cleanup:
  make distclean
  ./autoclean.sh