This built, binary works, not sure how to select language for testing, though.

not sure how to select language for testing, though.

To look up an Esperanto word, enter it as the fist argument to prevo:

prevo malsanulejo

To look up a possible Esperanto translation for a non-Esperanto word, pass the two-letter language code as first argument and the word as the second argument:

prevo en hospital

prevo de Krankenhaus

Gave it a try.
Yeah, that works. Tried a few words on it.
Spanish and English functioned, so I think it works.

I wonder whether me implementing this as three packages is the right approach:

• package prevo-tools provides

  • the executable prevodb to pre-process the dictionary data
  • the executable prevo to query the dictionary (requiring the pre-processed data)

  They're build from the same source code repo and have a relation similar to the one between updatedb and locate.

• package prevo-data provides the pre-processed dictionary data (using prevodb from prevo-tools at build-time)

• package prevo links the other two packages together, so that the prevo command will use the data from prevo-data by default. (Can be overridden by a command line option.)

This pull request has been mentioned on NixOS Discourse. There might be relevant details there:

https://discourse.nixos.org/t/prs-ready-for-review-may-2019/3032/155

Result of nixpkgs-review pr 85040 1

Result of nixpkgs-review pr 85040 1

Result of nixpkgs-review pr 85040 1