* gnu/packages/linux.scm (linux-libre)[build-phase]: Set the
KCONFIG_NOTIMESTAMP and KBUILD_BUILD_TIMESTAMP environment variables to
avoid introducing timestamps into the build outputs.

* guix/scripts/environment.scm (launch-environment/container): Set PS1
  during container initialization.

* gnu/packages/cdrom.scm (libcue)[source]: Fix url.
[home-page]: Project has moved to Github.

* gnu/packages/statistics.scm (r-devtools): Update to 1.10.0.
   (r-devtools)[propagated-inputs]: Add r-withr.

* gnu/packages/statistics.scm (r-withr): New variable.

* gnu/packages/bioinformatics.scm (r-genomation): Update to 1.2.2.

* gnu/packages/bioinformatics.scm (r-genomicfeatures): Update to
  1.22.13.

* gnu/packages/bioinformatics.scm (r-rtracklayer): Update to 1.30.4.

* gnu/packages/bioinformatics.scm (r-genomicalignments): Update to
  1.6.3.

* gnu/packages/bioinformatics.scm (r-summarizedexperiment): Update to
  1.0.2.

* gnu/packages/bioinformatics.scm (r-biostrings): Update to 2.38.4.

* gnu/packages/bioinformatics.scm (r-genomicranges): Update to 1.22.4.

* gnu/packages/bioinformatics.scm (r-genomeinfodb): Update to 1.6.3.

Reported by shanemikel_ on irc.

* gnu/packages/ghostscript.scm (libpaper)[source]: Update source url to
download from Fedora.
[home-page]: Use https.

Reported by <rain1@openmailbox.org>.

* gnu/packages/package-management.scm (guix-0.10.0)[arguments]: Use '=
instead of 'prefix in call to 'wrap-program'.

* gnu/packages/gnome.scm (libzapojit): New variable.

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

* gnu/packages/calendar.scm (khal)[arguments]: Disable failing tests in
'disable-tests' phase.

* gnu/packages/gstreamer.scm (gst-plugins-good): Update to 1.8.0.
[home-page]: Use https.
[arguments]: Disable tests that fail non-deterministically.

* gnu/packages/gstreamer.scm (gst-plugins-ugly): Update to 1.8.0.
[home-page]: Use https.

* gnu/packages/gstreamer.scm (python-gst, python2-gst): Update to 1.8.0.
[home-page]: Use https.

* gnu/packages/gstreamer.scm (gst-plugins-base): Update to 1.8.0.
[home-page]: Use https.

* gnu/packages/gstreamer.scm (gstreamer): Update to 1.8.0.

* gnu/packages/package-management.scm (guix-devel): Update to 76113935.
(guix): Set to GUIX-DEVEL.

* gnu/packages/web.scm (uwsgi): New variable.

* gnu/packages/version-control.scm (cgit): New variable.

This updates 58f0aae5.

* gnu/packages/package-management.scm (guix): Set to GUIX-0.10.0.

* gnu/packages/package-management.scm (guix-0.8.3): Rename to...
(guix-0.10.0): ... this.  Adjust users.
(guix): Set to GUIX-0.10.0.

Suggested by Leo Famulari and others.

* guix/scripts/system.scm (maybe-suggest-running-guix-pull): New
procedure.
(perform-action): Call it when ACTION is 'reconfigure.

Suggested by Chris Marusich <cmmarusich@gmail.com>.

* doc/guix.texi (Limitations): Increase package count.

This allows GuixSD to default to the right list of URLs, with
mirror.hydra.gnu.org coming first.

Reported by Chris Marusich <cmmarusich@gmail.com>.

* guix/store.scm (%default-substitute-urls): Prepend
"mirror.hydra.gnu.org."

Suggested by Chris Marusich <cmmarusich@gmail.com>.

* doc/guix.texi (Proceeding with the Installation): Explain why the
config file should be on the target file system.

Suggested by Chris Marusich <cmmarusich@gmail.com>.

* doc/guix.texi (Preparing for Installation): Add "-v" for dhclient.

Based on a suggestion by Chris Marusich <cmmarusich@gmail.com>.

* doc/guix.texi (System Installation): Suggest running "info info".

Suggested by Chris Marusich <cmmarusich@gmail.com>.

* doc/guix.texi (Proceeding with the Installation): Clarify what
'cow-store' is about.

Suggested by Jan Nieuwenhuizen <janneke@gnu.org>.

* doc/guix.texi (Preparing for Installation): Make it clear that
networking is required.

* doc/guix.texi (Security Updates): Add paragraph on the big picture of
security updates.  Cross-reference 'guix lint'.
(Invoking guix lint): Add CVE URLs.

* gnu/packages/music.scm (qtractor): Update to 0.7.5.