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

[Eli Zaretskii]

On March 19, 2019 4:32:39 PM GMT+02:00, Eli Zaretskii <eliz@gnu.org> wrote:
> 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.

Maybe try emptying your melpa/archive-contents file, perhaps it got corrupted 
by the buggy code you ran before the fix.