bug#34909: 26.1; Error refreshing packages under language environment

[Eli Zaretskii <eliz@gnu.org>]

On March 19, 2019 3:06:15 PM GMT+02:00, "E. Choroba" <choroba@matfyz.cz> wrote:
> Yes, I even tried to recompile the whole Emacs with the patched
> package.el to 
> no avail.
> 
> Maybe it's related to some other changes that happened between 26.1
> and the 
> development version?
> 
> Ch.
> 
> ==============================================================================
> On Tue, 19 Mar 2019, Eli Zaretskii wrote:
> >> Date: Tue, 19 Mar 2019 12:57:32 +0100 (CET)
> >> From: "E. Choroba" <choroba@matfyz.cz>
> >> cc: 34909@debbugs.gnu.org
> >>
> >>> The patch is below, should you want to install it locally.
> >>
> >> Thanks. I tried to apply the patch locally but the error persists
> (just
> >> running the above mentioned command).
> >
> > Did you byte-compile package.el after applying the patch?  If not,
> > either byte-compile it or load the .el file manually, and then try
> > again.
> >
> > I definitely cannot reproduce the problem after the change, whereas
> it
> > was 100% reproducible with your recipe before the change.
> >

Then I'm stumped.  I don't see how any other changes could affect this, but maybe try using package.el from the emacs-26 branch of the Emacs Git repository.

If that doesn't fix the problem, either, I guess someone will have to reproduce and tell which code requests coding-system, in addition to what I fixed.