bug#43093: Is Emacs 27.1 that breaks emacs-ess?

[zimoun]

Dear,

On Fri, 28 Aug 2020 at 22:07, divoplade <d@divoplade.fr> wrote:

> Right now emacs-ess is broken so I cannot upgrade to emacs 27. The
> failing test is "test-ess-roxy-literate".

I confirm.

--8<---------------cut here---------------start------------->8---
guix time-machine --commit=36a09d1853 \
     -- build emacs-ess -K
--8<---------------cut here---------------end--------------->8---

leads to "build of
/gnu/store/xm0lh7c0xfq3l0gfq34hxp1kjcnm6dri-emacs-ess-18.10.2.drv
failed" where the log reads:

--8<---------------cut here---------------start------------->8---
1 unexpected results:
   FAILED  test-ess-roxy-literate

2 skipped results:
  SKIPPED  runner-R-3\.2\.1-buffer-name
  SKIPPED  runner-R-3\.2\.1-defined
--8<---------------cut here---------------end--------------->8---

But the commit 36a09d1853 introducing Emacs 27 had been pushed on Fri Aug 28
00:13:51 2020 -0400 and the CI reported failures before this offending
commit.

https://ci.guix.gnu.org/search?query=spec%3Aguix-master+system%3Ax86_64-linux+emacs-ess

For other examples, see:

https://data.guix.gnu.org/repository/1/branch/master/package/emacs-ess/output-history

reporting issues both on Berlin and Bayfront and before the push of Emacs 27.


Note that the parent commit c05d2cfcbd builds successfully on my
machine.  Therefore, I do not know from where the failure comes from.


All the best,
simon