Re: GNU Elpa and Emacs 25.3

[Paul Pogonyshev <pogonyshev@gmail.com>]

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Sorry to bother again, but now I run into a different problem with this. I
set `gnutls-algorithm-priority' to "NORMAL:-VERS-TLS1.3" as suggested in
that bugreport. This does work fine locally. However, when I use the same
code on Travis CI for automated testing, I get the following error:

     gnutls.c: [1] (Emacs) connecting to host: stable.melpa.org
     gnutls.c: [1] (Emacs) allocating credentials
     gnutls.c: [2] (Emacs) allocating x509 credentials
     gnutls.c: [2] (Emacs) using default verification flags
     gnutls.c: [1] (Emacs) setting the trustfile:
 /etc/ssl/certs/ca-certificates.crt
     gnutls.c: [1] (Emacs) gnutls callbacks
     gnutls.c: [1] (Emacs) gnutls_init
     gnutls.c: [1] (Emacs) got non-default priority string:
NORMAL:-VERS-TLS1.3
     gnutls.c: [1] (Emacs) setting the priority string
     gnutls.c: [2] ASSERT: gnutls_priority.c:832

     gnutls.el: (err=[-50] The request is invalid.) boot: (:priority
NORMAL:-VERS-TLS1.3 :hostname stable.melpa.org :loglevel 2 :min-prime-bits
256 :trustfiles (/etc/ssl/certs/ca-certificates.crt) :crlfiles nil :keylist
nil :verify-flags nil :verify-error nil :callbacks nil)
     Package refresh done
     Debugger entered--Lisp error: (gnutls-error #<process stable.melpa.org<1>>
-50)
       signal(gnutls-error (#<process stable.melpa.org<1>> -50))

Travis CI (Ubuntu distribution Trusty) has an ancient GnuTLS version
2.12.6. As far as I understand, it doesn't know about TLS1.3 and therefore
the attempt to disable it fails.

Is there a way to use "NORMAL:-VERS-TLS1.3" in "do not fail" mode? Maybe I
could somehow query if the library knows about 1.3 first?

Paul

On Sat, 25 Jan 2020 at 16:33, Noam Postavsky <npostavs@gmail.com> wrote:

> On Sat, 25 Jan 2020 at 09:55, Paul Pogonyshev <pogonyshev@gmail.com>
> wrote:
> >
> >     (file-error "https://elpa.gnu.org/packages/archive-contents" "Bad
> Request")
> >
> > for me.  Also fails if I replace "https" with "http" in the command,
> > though with a different error.
>
> The https failure is Bug#36749, though I'm surprised to hear that it
> fails with plain http as well.
>
> > * The command with different Emacs version: 24.5, 26.3 and 28.0.50
> >   (trunk).
>
> Is your 24.5 Emacs linked against an older version of libgnutls?
> Otherwise I would expect it to have the same problem.
>

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