* gnu/packages/games.scm (augustus): New variable.

* gnu/packages/diffoscope (diffoscope): Update to 147.

* gnu/services/virtualization.scm (hurd-vm-shepherd-service,
hurd-vm-disk-image): New procedures.
(%hurd-vm-operating-system, hurd-vm-service-type): New variables.
(<hurd-vm-configuration>): New record type.
* doc/guix.texi (Virtualization Services): Document it.
* gnu/services/shepherd.scm (scm->go): Use let-system, remove FIXME.  Fixes
fixes cross-building of shepherd modules for the Hurd image.

* gnu/system/image.scm (system-image): Move "with-parameters" call so that it
encapsulates "operating-system-bootcfg".

* gnu/system/image.scm: Remove a left-over since maybe-with-target procedure
was removed.

This is a follow-up of 7ca533c7. The
introduced "target" variable is shadowing the target argument.

* guix/scripts/system.scm (perform-action): Rename "target" variable to
"target*".

* gnu/installer/newt/final.scm (run-install-shell): Force kmscon to open
'bold' font files, before the cow-store overlay is mounted.

* gnu/packages/messaging.scm (tox)[source]: Don't use autogenerated
tarball.

* gnu/packages/messaging.scm (qtox): Update to 1.17.2.
[arguments]: Add phase to disable network tests.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

*  gnu/packages/messaging.scm (c-toxcore): Update to 0.2.12.

Signed-off-by: Efraim Flashner <efraim@flashner.co.il>

* gnu/packages/networking.scm (pagekite): Update to 1.5.2.200603.

* gnu/packages/python-xyz.scm (python-socksipychain): Update to 2.1.2.

Suggested by Edouard Klein <edk@beaver-labs.com>.

* guix/profiles.scm (check-for-collisions): Export.
* guix/lint.scm (check-profile-collisions): New procedure.
(%local-checkers): Add 'profile-collisions' checker.
* tests/lint.scm ("profile-collisions: no warnings")
("profile-collisions: propagated inputs collide")
("profile-collisions: propagated inputs collide, store items"): New tests.
* doc/guix.texi (Invoking guix lint): Document it.

For packages with lots of propagated inputs,
'manifest-transitive-entries', as called from 'check-for-collisions',
would exhibit pathological behavior.  For example, "guix install cl-ana"
wouldn't complete in 1mn; now, it's down to 20s.

The issue was that manifest entries would never be 'equal?' due to the
delayed field in <manifest-entry>.

* guix/profiles.scm (manifest-transitive-entries): Use a vhash instead
of a set.  Use 'manifest-entry=?' instead of 'equal?' when checking for
equality.

* doc/guix.texi (Invoking guix lint): Mention the 'derivation' checker.

Fixes <https://bugs.gnu.org/41811>.
Reported by Lars-Dominik Braun <lars@6xq.net>.

* guix/ui.scm (call-with-paginated-output-port): Remove (getenv "LESS")
call.

* gnu/packages/shells.scm (zsh)[arguments]: Add configure-flags
'disable-site-dir' and 'enable-additional-fpath'.

* gnu/packages/kde.scm (kdeconnect): Update to 20.04.1.
[source]: Update source URI.
[arguments]: Adjust configure flags.

* gnu/packages/linux.scm (bbswitch-module): New variable.

* gnu/packages/patches/busybox-1.31.1-fix-build-with-glibc-2.31.patch: New file
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/busybox.scm (busybox): Update to 1.31.1.
[source]: Use patch.
[arguments]<#:phases>[check]: Fix test.

* gnu/packages/busybox.scm (busybox)[arguments]<#:phases>[disable-timestamps]:
New phase.

* gnu/packages/perl.scm: Import (guix licenses) with a #:prefix
and adjust all callers.

* gnu/packages/perl.scm (perl-text-patch): New variable.

* gnu/packages/perl.scm (perl-locale-maketext-lexicon): New variable.

* gnu/packages/perl.scm (perl-ppi): New variable.

* gnu/packages/perl-compression.scm (perl-compress-bzip2): New variable.

* gnu/packages/perl.scm (perl-lingua-en-sentence): New variable.

* gnu/packages/perl.scm (perl-text-haml): New variable.

* gnu/packages/perl.scm (perl-tie-simple): New variable.

* gnu/packages/perl.scm (perl-data-section-simple): New variable.

* gnu/packages/perl-check.scm (perl-test-subcalls): New variable.

* gnu/packages/perl-check.scm (perl-test-object): New variable.

* gnu/packages/perl.scm (perl-hook-lexwrap): New variable.

* gnu/packages/vpn.scm (xl2tpd)[inputs]: Add "linux-libre-headers" and "ppp",
[arguments]: add a 'setup-environment phase to set "PPPD" and "KERNELSRC"
variables.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>

* gnu/packages/statistics.scm (r-survival): Update to 3.2-3.

* gnu/packages/cran.scm (r-sf): Update to 0.9-4.

* gnu/packages/cran.scm (r-units): Update to 0.6-7.

* gnu/packages/cran.scm (r-calibrate): Update to 1.7.6.

* gnu/packages/bioconductor.scm (r-flowworkspace): Update to 4.0.6.

* gnu/packages/games.scm (starfighter): Update to 2.2.