* gnu/packages/emacs-xyz.scm (emacs-loop): Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-elisp-refs): Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-realgud): Update to 1.5.1.

* gnu/packages/emacs-xyz.scm (emacs-company-lsp): Enable tests.

* gnu/packages/javascript.scm (js-datatables): Update to 1.10.19.

* gnu/packages/parallel.scm (parallel): Update to 20190922.

* gnu/packages/engineering.scm (freecad): New variable.

* gnu/packages/engineering.scm (libmedfile): New variable.

* gnu/packages/engineering.scm (libarea): New variable.

* gnu/packages/engineering.scm (libspnav): New variable.

* gnu/packages/qt.scm (python-pyside-2-tools): New variable.

 * gnu/packages/qt.scm (python-pyside-2): New variable.

* gnu/packages/llvm.scm (libcxx-6): New variable.

* gnu/packages/qt.scm (python-shiboken-2): New variable.

* gnu/packages/graphics.scm (coin3D): New variable.

* gnu/packages/emacs-xyz.scm (emacs-company-lua): Update to 0.1-2.29f6819.
[arguments]: Include extra directory.

* gnu/packages/emacs-xyz.scm (emacs-crux): Update to 0.3.0-2.308f17d.

* gnu/packages/emacs-xyz.scm (emacs-lispy): Update included files.

* gnu/packages/diffoscope (diffoscope)[native-inputs]: Only add ghc on
  x86_64-linux and i686-linux.
  Only add openjdk and enjarify on x86_64-linux.

* gnu/packages/mail.scm (mutt): Update to 1.12.2.

* gnu/packages/emacs-xyz.scm (emacs-attrap): Update to 1.0-2.18cd1f7.

* gnu/packages/emacs-xyz.scm (emacs-github-review): Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-elfeed): Update to 3.2.0.

* gnu/packages/gnome.scm (libgnomekbd)[source]: Hard-code NAME.

* gnu/packages/gnome.scm (libgnomekbd): Update to 3.26.1.

* gnu/packages/maths.scm (wxmaxima): Update to 19.09.0.

As defaulting by stderr, along with the shepherd service not directing the
output to a log file makes seeing the output difficult, compared to logging to
syslog.

* gnu/services/virtualization.scm (libvirt-configuration)[log-outputs]: Change
default from "3:stderr" to "3:syslog:libvirtd".

Otherwise the .go files appear within share, and Guile doesn't find them. With
this patch they appear in lib within the output. One thing this means is that
stack traces include the filenames.

* gnu/packages/guile-xyz.scm (guile-email)[arguments]: Add 'patch-module-dir
phase.

* guix/scripts/package.scm (process-query) <'show>: Remove superseded
packages.
* tests/guix-package-aliases.sh: Add test.

* guix/scripts/show.scm: New file.
* Makefile.am (MODULES): Add it.
* po/guix/POTFILES.in: Add it.
* tests/guix-package-aliases.sh: Add test.
* doc/guix.texi (Invoking guix package): Document it and use it in a example.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/python-xyz.scm (python-bibtexparser): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/packages/xdisorg.scm (autocutsel): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

* gnu/services/mail.scm (free-form-fields?, free-form-args?): Change
'string' to 'string?'.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Until now '&store-protocol-error' conditions raised in the inferior
would not be correctly propagated because SRFI-35 records lack a read
syntax.

Reported at <https://bugs.gnu.org/37449>
by Carl Dong <contact@carldong.me>.

* guix/inferior.scm (port->inferior): Import (srfi srfi-34) in the inferior.
(inferior-eval-with-store): Define 'error?' and 'error-message'.  Wrap
call to PROC in 'guard'.  Check the response of INFERIOR for a
'store-protocol-error' or a 'result' tag.
* tests/inferior.scm ("inferior-eval-with-store, &store-protocol-error"):
New test.

Fixes <https://bugs.gnu.org/37423>.
Reported by Jan <tona_kosmicznego_smiecia@interia.pl>.

* gnu/services/xorg.scm (%gdm-activation): New variable.
(gdm-service-type)[extensions]: Add 'activation-service-type'.

* gnu/packages/emacs-xyz.scm (emacs-counsel-etags): Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-rjsx-mode): Enable tests.

* gnu/packages/android (enjarify)[native-inputs]: Use openjdk instead of
  openjdk:jdk.

* gnu/packages/emacs-xyz.scm (emacs-lispyville): Enable tests.

* gnu/packages/emacs-xyz.scm (emacs-lispy): Enable tests.