Find out the specific version of an installed program

[Angelk90]

Hi @sebhildebrandt, congratulations on the project.

Is your feature request related to a problem? Please describe.

I would like to know the versions of these programs installed:

cargo, curl, rails, ruby, rust, sqlite, vim

I tried:
versions: 'cargo, curl, rails, ruby, rust, sqlite, vim

result:

"versions": {}