Re: [PATCH 03/16] gnu: Add python-promise.

[David Craven]

> +(define-public python2-promise
> +  (let ((promise (package-with-python2
> +                   (strip-python2-variant python-promise))))
> +    (package (inherit promise)
> +      (arguments (substitute-keyword-arguments (package-arguments promise)
> +                   ((#:tests? _) #t)))

I've seen this in a few of your patches. Why do tests fail with python
but not with python-2?