I just realized that we can do even better: have --list-generations
output recutils-formatted data (using ‘object->fields’). Then, if we do
it right, the output can just be piped to ‘recsel’ to select entries of
a certain age, to display specific fields, etc. Like:
generation-number: 1
date: 2013-05-07
However, I don’t know exactly how to represent both the generations and
the list of packages in each generation in a single recutils stream.
José, how can the relations between “generation” records and “package”
records be expressed?
You can have two record sets: one for generations, one for packages. A
foreign key can relate them. Something like this:
%rec: Generation
Id: 1
Date: Dec. 16 2013
Id: 2
Date: May 7 2013
%rec: Package
%type: Generation rec Generation
Package: guile
Version: 2.0.7
Generation: 1
Package: guile
Version: 2.0.9
Generation: 2
Package: hello
Version: 2.8
Generation 2
