Instead of returning multiple services in simple-cuirass-services, rely on the
instantiate-missing-services procedure to instantiate postgresql and
postgresql-role-service-type when missing.

Turn simple-cuirass-services procedure into
simple-cuirass-configuration->specs, that takes a simple-cuirass-configuration
record and returns a Cuirass specification.

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

* gnu/services/cuirass.scm (%default-cuirass-config): Remove it.
(simple-cuirass-services): Rename it to ...
(simple-cuirass-configuration->specs): ... this procedure.
* gnu/tests/cuirass.scm (cuirass-services): Remove postgresql and
postgresql-role services that are automatically instantiated.
(simple-cuirass-service): New variable.
(%cuirass-simple-test): Adapt it to use simple-cuirass-configuration->specs
instead of simple-cuirass-services.
* doc/guix.texi (Simple Cuirass): Update it.

* gnu/packages/lisp-xyz.scm (sbcl-common-lisp-jupyter): Update to 20210217.

* gnu/packages/lisp-xyz.scm (sbcl-trivial-clipboard): Update to 20210219.

* gnu/packages/video.scm (youtube-dl): Update to 2021.02.22.

Previously, 'guix install foo -r bar' would crash with a backtrace
because NAME would be #\r (a character instead of a string).

* guix/scripts.scm (parse-command-line)[parse-options-from]: Call
'option-hint' only when NAME is a string.

* guix/build/profiles.scm (build-profile): Fix typo.

* guix/describe.scm (manifest-entry-with-provenance): Fix first argument
to 'assq'.

Commit 8f710cc5 introduced a duplicate
ocaml-llvm@9.0.1 package, which was flagged by a test failure in
tests/packages.scm.

* gnu/packages/ocaml.scm (make-ocaml-llvm): Define as 'mlambdaq'.

Fixes a typo introduced in b819512c.

* gnu/packages/linux.scm (linux-libre-headers-5.11): Really refer to 5.11.

This fixes a regression introduced in
9a38bed2.

* guix/packages.scm (package-field-location): Do not shadow the 'file'
variable.

* gnu/packages/mail.scm (isync): Update to 1.3.5.

* gnu/packages/monitoring.scm (temper-exporter): New variable.

Some services require networking, I'm looking at the Guix Build Coordinator
agent.  Networking seems to work in the childhurd VM, so I think this change
makes sense.

* gnu/system/hurd.scm (%base-services/hurd): Add 'networking to the provision
parameter for the static-networking service.

This is part of trying to reduce the interdependency of code within the
substitute module.

This commit addresses some of the error handling that was performed through
open-connection-for-uri/maybe. The new approach is to use
call-with-connection-error-handling, and wrap calls to http-multiple-get and
http-fetch with that procedure, which takes care of handling connection
errors.

I think this is even slightly more rigerous than the previous setup, because
this approach handles connection errors that occur when http-multiple-get
reconnects to a host.

* guix/scripts/substitute.scm (open-connection-for-uri/maybe): Transform in to
call-with-connection-error-handling.
(fetch-narinfos): Use call-with-connection-error-handling.
(process-query): Replace open-connection-for-uri/maybe with
open-connection-for-uri/cached.
(open-connection-for-uri/cached): Set a default timeout, matching the
behaviour in open-connection-for-uri/maybe.
(process-substitution): Use call-with-connection-error-handling.

At least by default.  Instead, make the open-connection procedure a parameter,
and make the default guix:open-connection-for-uri.  Do so similarly for
lookup-narinfos and lookup-narinfos/diverse which work towards calling
fetch-narinfos.

This means this code can be moved to a different module, without having
use/move the connection caching code.

* guix/scripts/substitute.scm (fetch-narinfos): Add #:open-connection
argument, and call http-multiple-get with it.
(lookup-narinfos) Add #:open-connection argument, and call fetch-narinfos with
it.
(lookup-narinfos/diverse): Add #:open-connection argument, and call
lookup-narinfos with it.
(process-query): Call lookup-narinfos/diverse with #:open-connection
open-connection-for-uri/maybe.

As it's only called in one place, and this should make the code easier to
read.

* guix/scripts/substitute.scm (fetch): Move procedure inside…
(process-substitution): …here.

It's just called in one place, with hardcoded argument values, so just inline
them.

* guix/scripts/substitute.scm (fetch): Remove arguments that don't vary, copy
the values from the call site in process-substitution.
(process-substitution): Remove unnecessary argument values from fetch call.

Failures now should be handled where they occur, and if there's a problem
that's symptomatic of an issue with the connection, the port should be closed.

* guix/scripts/substitute.scm (call-with-cached-connection): Remove procedure.
(with-cached-connection): Remove syntax rule.

Just pass open-connection-for-uri/maybe to http-fetch, this removes the need
for with-cached-connection and passing the port in.

* guix/scripts/substitute.scm (fetch): Don't take a port as an argument, and
pass open-connection-for-uri/maybe to http-fetch.
(process-substitution): Don't call fetch with with-cached-connection.

So that an alternative procedure can be passed in, perhaps to perform
connection caching.

* guix/http-client.scm (http-fetch): Add an #:open-connection keyword
argument.

Instead, just pass open-connection-for-uri/maybe to http-multiple-get. This
code should be functionaly similar to the previous code. The eventual aim of
this is to make the connection caching not mandatory in fetch-narinfos.

* guix/scripts/substitute.scm (fetch-narinfos): Remove use of
call-with-cached-connection.

As this is used by http-fetch and http-multiple-get when they call the
specified open connection procedure.

* guix/scripts/substitute.scm (open-connection-for-uri/maybe): Support
 #:verify-certificate?.

Making sure to close the port if it looks to be unusable. This closing of the
port will allow for caching connections, without caching broken connections,
as the cache can avoid handing out closed ports.

* guix/http-client.scm (http-multiple-get): Try to catch exceptions that
happen if the port is unusable, this is a adaptation of code within the (guix
scripts substitute) module.

From (guix scripts substitute). This will make it easier to reuse this code.

* guix/scripts/substitute.scm (http-multiple-get): Remove, and move to…
* guix/http-client.scm (http-multiple-get): …here.

* guix/scripts/substitute.scm (fetch): Remove redundant let block.

http-fetch does this, so just use that code instead.

* guix/scripts/substitute.scm (fetch): Remove connection handling when the
port is closed.

http-fetch does this, so just set the right option.

* guix/scripts/substitute.scm (fetch): Remove buffering code, and pass
 #:buffered? to http-fetch.

* gnu/packages/bioinformatics.scm (star): Update to 2.7.8a.

* gnu/packages/task-management.scm (dstask): New variable.

Signed-off-by: Léo Le Bouter <lle-bout@zaclys.net>

On desktop environments other than GNOME, it is not obvious gcr package needs
to be installed in the profile for gnome-keyring unlock prompts to
work. Propagating it ensures no one will need to figure this out in the future.

* gnu/packages/gnome.scm (gnome-keyring)[propagated-inputs]: Add "gcr".

* gnu/packages/version-control.scm (gita): Update to 0.12.9.

Signed-off-by: Léo Le Bouter <lle-bout@zaclys.net>

This is a followup to commit f500905c.

* gnu/packages/python-xyz.scm (python-sane)[license]: Describe the
license.

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

Co-authored-by: Léo Le Bouter <lle-bout@zaclys.net>

This is a follow-up of b309a286.

* doc/guix.texi (Tor): Fix build.

* gnu/packages/ci.scm (cuirass)[inputs]: Add gnutls.
[arguments]: Adapt accordingly.

* gnu/services/databases.scm (postgresql-service-type): Define a default value.

* gnu/services/cuirass.scm (cuirass-service-type): Instantiate postgresql
service when missing.

* doc/guix.texi (Networking Services): Document new `control-socket?'
option for `tor-configuration`.
* gnu/services/networking.scm (<tor-configuration>):
(tor-configuration->torrc):

* gnu/packages/ruby.scm (ruby-omniauth-oauth2): Update to 1.7.1.

* gnu/packages/ruby.scm (ruby-omniauth): Update to 2.0.3.
[arguments]: Don't skip tests.
[propagated-inputs]: Add ruby-rack-protector.
[native-inputs]: Add ruby-rspec.