guix hash: Add 'serializer' option.

* guix/scripts/hash.scm (%options): Deprecate 'recursive', add 'serializer'.
(%default-options): Add 'serializer'.
(nar-hash): New procedure.
(default-hash): New procedure.
(guix-hash)[file-hash]: Use them.
(show-help): Adjust.
* tests/guix-hash.scm: Adjust.
* doc/guix.texi: Update.

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

guix hash: Support several files.

* guix/scripts/hash.scm (guix-hash): Allow several files.
[file-hash]: Catch system-error.
[formatted-hash]: New procedure.
* tests/guix-hash.sh: Add test.
* doc/guix.texi (Invoking guix hash): Mention "one or more files".

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

import: Beautify descriptions when appropriate.

* guix/import/elpa.scm (elpa-package->sexp)
* guix/import/gnu.scm (gnu-package->sexp)
* guix/import/hackage.scm (hackage-module->sexp)
* guix/import/minetest.scm (make-minetest-sexp)
* guix/import/opam.scm (opam->guix-package)
* guix/import/pypi.scm (make-pypi-sexp): Beautify descriptions.

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

import: utils: Wrap lines in description.

* guix/import/utils.scm (beautify-description): Use ‘fill-paragraph’; add
  optional ‘length’ argument.

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

gnu: python-nbxmpp: Correct libsoup dependency.

This packages uses ABI of libsoup v2.

* gnu/packages/messaging.scm (python-nbxmpp)[inputs]: Replace libsoup
with libsoup-minimal-2.

gnu: python-precis-i18n: Update to 1.0.3.

* gnu/packages/python-xyz (python-precis-i18n)[version]: Update to 1.0.3.

gnu: video-contact-sheet: Tweak the synopsis and description.

* gnu/packages/video.scm (video-contact-sheet)[synopsis, description]: Improve.

gnu: Add video-contact-sheet.

* gnu/packages/video.scm (video-contact-sheet): New variable.

gnu: js8call: Remove workaround.

* gnu/packages/radio.scm (js8call)[arguments]: Remove
  'work-around-runtime-bug' phase.

gnu: wsjtx: Update to 2.5.2.

* gnu/packages/radio.scm (wsjtx-hamlib, wsjtx): Update to 2.5.2.
  [arguments]: Remove 'work-around-runtime-bug' phase.

gnu: xnec2c: Update to 4.2.

* gnu/packages/radio.scm (xnec2c): Update to 4.2.
  [arguments]: Remove 'fix-makefile' and 'fix-paths' phases.

gnu: dump1090: Update to 6.1.

* gnu/packages/radio.scm (dump1090): Update to 6.1.

gnu: rtl-433: Update to 21.12.

* gnu/packages/radio.scm (rtl-433): Update to 21.12.

gnu: qsstv: Update to 9.5.8.

* gnu/packages/radio.scm (qsstv): Update to 9.5.8.
  [arguments]: Remove 'fix-newer-hamlib-support' phase.

gnu: dream: Update to 2.2.

* gnu/packages/radio.scm (dream): Update to 2.2.

gnu: wfview: Update to 1.2d.

* gnu/packages/radio.scm (wfview): Update to 1.2d.
  [inputs]: Add opus.
  [arguments]: Update 'configure' phase. Remove custom 'install' phase.

gnu: sdrangel: Update to 6.17.5.

* gnu/packages/radio.scm (sdrangel): Update to 6.17.5.

gnu: irssi: Enable true-color and unicode support.

* gnu/packages/irc.scm (irssi)[inputs]: Add utf8proc.
[configure-flags](enable-true-color): New flag.

gnu: weechat: Enable documentation and man-pages.

* gnu/packages/irc.scm (weechat)[outputs](doc): New output.
[configure-flags](ENABLE_MAN,ENABLE_DOC): New flags.
[phases](move-doc): New phase.
[native-inputs]: Add ruby-asciidoctor.

gnu: weechat: Enable ruby support for scripting.

* gnu/packages/irc.scm (weechat)[configure-flags](ENABLE_RUBY): Remove flag.
[inputs]: Add ruby.