[asciihacker]

There is also miniKanren, available as core.logic.

[saosebastiao]

Seemed like abandonware the last time I tried. Has it been picked up again?

[znDuff]

core.logic has been in continuous commercial use pretty much from its inception, and that continues presently. I'd argue that calling a continuously high rate of change a prerequisite towards usefulness is an attitude which makes more sense in communities where there's little respect for backwards compatibility and thus a high rate of bitrot, ie. Ruby.

[dkersten]

Exactly. I'd rather use something stable that doesn't need much (if any) continuous change.

[dkersten]

There's been maintenance commits regularly (2 days ago, 20 days ago, etc) and the project itself is stable. So while there's been no new features added, I don't see why that would be necessary if it works well as is.