Got it, thanks for your response.

On Mon, Aug 5, 2019 at 3:24 PM Ricardo Wurmus <rekado@elephly.net> wrote:

>
> Brian Leung <bkleung89@gmail.com> writes:
>
> > For example, `make check TESTS="tests/swh.scm"` yields two failing tests.
> > Running one of the package-manager test suites (such as gem.scm)` will
> also
> > produce some failing tests.
>
> This is not actually a bug.
>
> We switched from Guile JSON 1.x to 3.x, which has a different
> intermediate representation for JSON data structures.
>
> swh.scm and all other modules have been modified, but when you run “guix
> environment guix” you still get an environment with Guile JSON 1.x.
> This leads to the test failure.
>
> This problem disappears when you run “guix environment guix --ad-hoc
> guile-json”; it will disappear when the “guix” package is upgraded to
> point to the latest version of Guile JSON.
>
> --
> Ricardo
>
>