tests: guix-system: Drop the i686-linux desktop image test.

Desktop these days means having Rust support (GNOME), which i686 currently
lacks on Guix.

* tests/guix-system.sh: Do not attempt to build the desktop.tmpl image for
i686-linux.

gnu: samba: Update to 4.18.1 [security fixes].

Fixes CVE-2023-0922 and CVE-2023-0614.

* gnu/packages/samba.scm (samba): Update to 4.18.1.

Signed-off-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Modified-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>

gnu: samba: Apply graft, and make graft private.

* gnu/packages/samba.scm (samba) [replacement]: Add field.
(samba/security-fixes): Renamed from samba/fixed, for clarity.
* gnu/packages/samba.scm (samba/pinned): Adjust for graft variable name change.

gnu: samba: Make the python-cryptography input conditional.

* gnu/packages/samba.scm (samba) [arguments]: Conditionally enable self tests
in configure phase.
[native-inputs]:  Conditionally add python-cryptography.
* gnu/packages/samba.scm (samba/pinned) [native-inputs]: Likewise.

Reported-by: John Kehayias <john.kehayias@protonmail.com>

tests: Fix texlive->guix-package test.

The home page for the package had changed.

* tests/texlive.scm ("texlive->guix-package"): Match the home-page and
synopsis inexactly to avoid future similar breakages.

gnu: python-pillow/security-fixes: Make graft package private.

This fixes the tests/packages.scm test suite, which would have failed its
'fold-available-packages with/without cache' test case due two python-pillow
packages having the same name/version.

* gnu/packages/python-xyz.scm (python-pillow/security-fixes): Make private.

tests: Re-add debug output to a package tests.

* tests/packages.scm ("fold-available-packages with/without cache"):
Re-introduce debugging output.

gnu: r-dmrseq: Update to 1.18.1.

* gnu/packages/bioconductor.scm (r-dmrseq): Update to 1.18.1.

gnu: r-beachmat: Update to 2.14.2.

* gnu/packages/bioconductor.scm (r-beachmat): Update to 2.14.2.

gnu: r-gdsfmt: Update to 1.34.1.

* gnu/packages/bioconductor.scm (r-gdsfmt): Update to 1.34.1.

gnu: r-ebimage: Update to 4.40.1.

* gnu/packages/bioconductor.scm (r-ebimage): Update to 4.40.1.

gnu: r-enrichplot: Update to 1.18.4.

* gnu/packages/bioconductor.scm (r-enrichplot): Update to 1.18.4.

gnu: r-structuralvariantannotation: Update to 1.14.1.

* gnu/packages/bioconductor.scm (r-structuralvariantannotation): Update to 1.14.1.

gnu: r-rhdf5: Update to 2.42.1.

* gnu/packages/bioconductor.scm (r-rhdf5): Update to 2.42.1.

gnu: openmw-scenegraph: Fix build.

* gnu/packages/graphics.scm (openmw-scenegraph)[outputs]: Only use 'out'
output.
[arguments]: Delete inherited 'copy-plugins phase.

gnu: repo2docker: Add missing inputs.

* gnu/packages/jupyter.scm (repo2docker)[inputs]: Add python-iso8601,
python-chardet.

gnu: kwin: Update skipped test list.

* gnu/packages/kde-plasma.scm (kwin)[arguments]: Update custom 'check
phase with new list of skipped tests.

gnu: kwin: Rewrite skipped tests to be more readable.

* gnu/packages/kde-plasma.scm (kwin)[arguments]: Rewrite skipped tests
in custom 'check phase to be easier to read.

gnu: emacs-osm: Do not mix home-page and origin.

* gnu/packages/emacs-xyz.scm (emacs-osm)[source]<origin>: Do not use home-page
value as origin.

gnu: emacs-osm: Update to 0.11.

* gnu/packages/emacs-xyz.scm (emacs-osm): Update to 0.11.