* guix/scripts/pull.scm (show-help, %options): Add '--profile'.
(build-and-install): Change 'config-dir' argument to 'profile'.
(guix-pull): Honor '--profile'.
* doc/guix.texi (Invoking guix pull): Document it.

* doc/guix.texi (Web Services): Document 'channels' and
'package-list-expiration'.

Previously Git pulls over HTTPS would fail with:

  guix/git.scm:132:7: In procedure update-cached-checkout:
  Throw to key `git-error' with args `(#<<git-error> code: -17 message: "the SSL certificate is invalid" class: 16>)'.

* gnu/services/web.scm (hpcguix-web-shepherd-service): Pass
"SSL_CERT_DIR=/etc/ssl/certs".
* doc/guix.texi (Web Services): Mention certificates.

This removes (guix hash) and (guix pk-crypto), which now live as part of
Guile-Gcrypt (version 0.1.0.)

* guix/gcrypt.scm, guix/hash.scm, guix/pk-crypto.scm,
tests/hash.scm, tests/pk-crypto.scm: Remove.
* configure.ac: Test for Guile-Gcrypt.  Remove LIBGCRYPT and
LIBGCRYPT_LIBDIR assignments.
* m4/guix.m4 (GUIX_ASSERT_LIBGCRYPT_USABLE): Remove.
* README: Add Guile-Gcrypt to the dependencies; move libgcrypt as
"required unless --disable-daemon".
* doc/guix.texi (Requirements): Likewise.
* gnu/packages/bash.scm, guix/derivations.scm, guix/docker.scm,
guix/git.scm, guix/http-client.scm, guix/import/cpan.scm,
guix/import/cran.scm, guix/import/crate.scm, guix/import/elpa.scm,
guix/import/gnu.scm, guix/import/hackage.scm,
guix/import/texlive.scm, guix/import/utils.scm, guix/nar.scm,
guix/pki.scm, guix/scripts/archive.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/scripts/pack.scm,
guix/scripts/publish.scm, guix/scripts/refresh.scm,
guix/scripts/substitute.scm, guix/store.scm,
guix/store/deduplication.scm, guix/tests.scm, tests/base32.scm,
tests/builders.scm, tests/challenge.scm, tests/cpan.scm,
tests/crate.scm, tests/derivations.scm, tests/gem.scm,
tests/nar.scm, tests/opam.scm, tests/pki.scm,
tests/publish.scm, tests/pypi.scm, tests/store-deduplication.scm,
tests/store.scm, tests/substitute.scm: Adjust imports.
* gnu/system/vm.scm: Likewise.
(guile-sqlite3&co): Rename to...
(gcrypt-sqlite3&co): ... this.  Add GUILE-GCRYPT.
(expression->derivation-in-linux-vm)[config]: Remove.
(iso9660-image)[config]: Remove.
(qemu-image)[config]: Remove.
(system-docker-image)[config]: Remove.
* guix/scripts/pack.scm: Adjust imports.
(guile-sqlite3&co): Rename to...
(gcrypt-sqlite3&co): ... this.  Add GUILE-GCRYPT.
(self-contained-tarball)[build]: Call 'make-config.scm' without
 #:libgcrypt argument.
(squashfs-image)[libgcrypt]: Remove.
[build]: Call 'make-config.scm' without #:libgcrypt.
(docker-image)[config, json]: Remove.
[build]: Add GUILE-GCRYPT to the extensions  Remove (guix config) from
the imported modules.
* guix/self.scm (specification->package): Remove "libgcrypt", add
"guile-gcrypt".
(compiled-guix): Remove #:libgcrypt.
[guile-gcrypt]: New variable.
[dependencies]: Add it.
[*core-modules*]: Remove #:libgcrypt from 'make-config.scm' call.
Add #:extensions.
[*config*]: Remove #:libgcrypt from 'make-config.scm' call.
(%dependency-variables): Remove %libgcrypt.
(make-config.scm): Remove #:libgcrypt.
* build-aux/build-self.scm (guile-gcrypt): New variable.
(make-config.scm): Remove #:libgcrypt.
(build-program)[fake-gcrypt-hash]: New variable.
Add (gcrypt hash) to the imported modules.  Adjust load path
assignments.
* gnu/packages/package-management.scm (guix)[propagated-inputs]: Add
GUILE-GCRYPT.
[arguments]: In 'wrap-program' phase, add GUILE-GCRYPT to the search
path.

* doc/guix.texi (Sound Services, DNS Services): Fix typos.
* gnu/packages/cpp.scm (json-modern-cxx)[description]: Likewise.
* gnu/packages/emacs.scm (emacs-fancy-narrow)[synopsis, description]:
Likewise. Edit & mark up while we're here.
* gnu/packages/mail.scm (alot)[synopsis, description]: Ditto.

* guix/channels.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/scripts/pull.scm: Use it.
(%default-options): Remove 'repository-url' and 'ref'.
(show-help, %options): Add '--channels'.
(%self-build-file, %pull-version, build-from-source)
(whole-package-for-legacy, derivation->manifest-entry): Remove.  These
now exist in a similar form in (guix channels).
(build-and-install): Change 'source' to 'instances'.  Remove #:url,
 #:branch, and #:commit.  Rewrite using 'channel-instances->manifest'.
(channel-list): New procedure.
(guix-pull): Parameterize %REPOSITORY-CACHE-DIRECTORY.  Call
'honor-lets-encrypt-certificates!' unconditionally.  Load
~/.config/guix/channels.scm.  Rewrite to use (guix channels).
[use-le-certs?]: Remove.
* po/guix/POTFILES.in: Add (guix channels).
* doc/guix.texi (Invoking guix pull): Group the description of '--url',
'--commit', and '--branch'.  Remove mention of 'GUIX_PULL_URL'.  Add
references to "Channels".  Document '--channels'.
(Channels): New node.
(Defining Packages): Link to "Channels" instead of "Package Modules".
(Invoking guix edit): Link to "Package Modules" instead of "Defining
Packages".
(Package Modules): Document both GUIX_PACKAGE_PATH and channels.

* guix/import/pypi.scm (guess-requirements): Use upstream names.
(compute-inputs): Return the upstream dependency names as an additional value.
(make-pypi-sexp): Likewise.
(pypi->guix-package): Memoize it.
(pypi-recursive-import): New procedure.
* guix/scripts/import/pypi.scm (show-help, %options): Accept "recursive"
option.
(guix-import-pypi): Use pypi-recursive-import.
* doc/guix.texi (Invoking guix import): Document it.

* guix/import/hackage.scm (hackage-name->package-name): Export procedure.
* guix/import/stackage.scm (lts-info-packages-lts-info): Fix match expression.
(stackage-recursive-import): New procedure.
(stackage->guix-package): Memoize results.
* guix/scripts/import/stackage.scm (show-help, %options,
guix-import-stackage): Support recursive importing.
* doc/guix.texi (Invoking guix import): Document option.

* gnu/services/dns.scm (ddclient-configuration, ddclient-service-type): New
variables.
(uglify-field-name, serialize-field, serialize-boolean, serialize-integer,
serialize-string, serialize-list, serialize-extra-options,
ddclient-activation, ddclient-shepherd-service,
generate-ddclient-documentation): New procedures.
* doc/guix.texi (DNS Services): Document it.

* gnu/services/ssh.scm (<openssh-configuration>)[log-level]: New field.
(openssh-config-file): Honor it.
* doc/guix.texi (Networking Services): Document it.

* doc/guix.texi (Networking Services): Document it, and mention that
tor-service is deprecated.
* gnu/services/networking.scm (<tor-configuration>) <socks-socket-type>:
New field.
(tor-configuration->torrc): When socks-socket-type is 'unix, set
SocksPort to UNIX domain socket /var/run/tor/socks-sock and set
UnixSocksGroupWritable to 1.
* gnu/tests/networking.scm (%tor-os/unix-socks-socket): Instead of using
a custom config file, just set socks-socket-type to 'unix.

Fixes <https://bugs.gnu.org/32473>.
Reported by HiPhish <hiphish@posteo.de>.

* doc/guix.texi (Top, Defining Packages): In menu, remove extra space
before "::".

* doc/guix.texi (Using the Configuration System): Add missing 'you' and
fix word order.

* gnu/services/security-token.scm: New file.
* gnu/tests/security-token.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Register new files.
* doc/guix.texi (Miscellaneous Services): Document the service.

* doc/guix.texi (Proceeding with the Installation): Use file-system-label
instead of the title field.

* doc/guix.texi (Preparing for Installation): Add missing 'to'.

Otherwise the global counterpart is never taken into account.

* doc/guix.texi (Version Control Services): Update accordingly.
* gnu/services/cgit.scm (repo-boolean?, serialize-repo-boolean): Use the
DEFINE-MAYBE macro to allow for the 'disabled value.
(repository-cgit-configuration)[enable-commit-graph?, enable-log-filecount?,
enable-log-linecount?, enable-remote-branches?, enable-subject-links?,
enable-html-serving?]: Change default value to 'disabled.

* guix/import/hackage.scm (hackage-recursive-import): New procedure.
(hackage-module->sexp): Return dependencies alongside dependencies.
(hackage->guix-package): Memoize results.
* guix/scripts/import/hackage.scm (show-help, %options, guix-import-hackage):
Support recursive importing.
* doc/guix.texi (Invoking guix import): Document option.

* doc/guix.texi (Networking Services): Escape newline between keyword
arguments.

* doc/guix.texi (Continuous Integration): Fix Cuirass URL.

* gnu/services/ssh.scm (<openssh-configuration>)[allow-agent-forwarding?]
[allow-tcp-forwarding?, gateway-ports?]: New fields.
(openssh-config-file): Handle them.
* doc/guix.texi (Networking Services): Adjust accordingly.

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

Reported by Pierre Neidhardt <ambrevar@gmail.com>.

* doc/guix.texi (Invoking guix-daemon): Fix an incorrect statement
regarding --gc-keep-outputs.  Add a little to the description of this
option and --gc-keep-derivations.

* gnu/packages/cups.scm (hplip-minimal): New variable.
* gnu/packages/scanner.scm (sane-backends)[inputs]: Replace hplip with
hplip-minimal.
* doc/guix.texi (Printing Services): Change example code to use
hplip-minimal in place of hplip. Add note explaining when use hplip.

* guix/build-system/guile.scm, guix/build/guile-build-system.scm: New
files.
* Makefile.am (MODULES): Add them.
* doc/guix.texi (Build Systems): Document 'guile-build-system'.

* doc/guix.texi (Continuous Integration): Remove the load-path field.

* guix/scripts/pull.scm (display-profile-content): Call
'display-generation'.
(display-new/upgraded-packages, display-profile-content-diff): New
procedures.
(process-query)[list-generation]: Remove.
[list-generations]: New procedure.
Adjust accordingly.
* doc/guix.texi (Invoking guix pull): Update example of '-l'.

* guix/inferior.scm, guix/scripts/repl.scm, tests/inferior.scm: New
files.
* Makefile.am (MODULES): Add 'guix/scripts/repl.scm' and
'guix/inferior.scm'.
(SCM_TESTS): Add 'tests/inferior.scm'.
* doc/guix.texi (Invoking guix repl): New node.

* etc/snippets/text-mode/guix-commit-message-use-https-home-page: New file.
* doc/contributing.texi (The Perfect Setup): Document new snippet.

Inspired by
<https://lists.gnu.org/archive/html/help-guix/2018-07/msg00035.html>.

* gnu/services/mcron.scm (shepherd-schedule-action): New procedure.
(mcron-shepherd-services): Add 'actions' field.
* gnu/tests/base.scm (run-mcron-test)["schedule action"]: New test.
* doc/guix.texi (Scheduled Job Execution): Mention 'herd schedule'.

* gnu/services/shepherd.scm (<shepherd-service>)[actions]: New field.
(<shepherd-action>): New record type.
(shepherd-service-file): Pass #:actions to 'make'.
* doc/guix.texi (Shepherd Services): Document custom actions.

This allows for using a package source directly from git, doing something like

    (define (command->bytevector command)
      (let ((port (apply open-pipe* OPEN_READ command)))
        (let ((output (get-bytevector-all port)))
          (close-port port)
          output)))

    (define-public hello-git
      (package
        (name "hello")
        (version "git")
        (source (let* ((commit "stable-2.0")
                       (content (command->bytevector
                                 `("git" "archive" "--format" "tar" "--prefix"
                                   ,(string-append commit "/") ,commit)))
                       (file-name (string-append "hello-" commit)))
                  (plain-file file-name content)))
        ...
        ))

* guix/gexp.scm (<plain-file>): Also allow bytevector content.
(plain-file-compiler): Handle bytevector content.
* doc/guix.texi (G-Expressions): Describe plain-file now also taking
bytevectors.

* guix/store.scm (binary-file): New function.
* doc/guix.texi (The Store Monad): Describe binary-file.

* doc/guix.texi (Invoking guix import): Document gem recursive import.
* guix/import/gem.scm (gem->guix-package): Return package and dependencies
values.
(gem-recursive-import): New procedure.
* guix/scripts/import/gem.scm (show-help, %options): Add recursive option.
(guix-import-gem): Use 'gem-recursive-import'.
* tests/gem.scm (test-json): Rename to 'test-foo-json'.
("gem->guix-package"): Use 'test-foo-json'.
(test-bar-json, test-bundler-json): New variables.
("gem-recursive-import"): New test.

* guix/scripts/import.scm (importers): Add opam.
* guix/scripts/import/opam.scm: New file.
* guix/import/opam.scm: New file.
* tests/opam.scm: New file.
* Makefile.am: Add them.
* doc/guix.texi (Invoking guix import): Document it.

* doc/guix.texi (Binary Installation)
(USB Stick and DVD Installation, Running GuixSD in a VM): Use
"https://alpha.gnu.org" instead of the now deprecated FTP URLs.

The current incorrect link at: https://www.gnu.org/software/guix/manual/en/guix.html#Running-GuixSD-in-a-VM

.

I looked for other instances of this mistake in the docs, but I could't
find any.

* doc/guix.texi: fix link to GuixSD VM image in FTP server.

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

This is a follow-up to commit a33652ee.

* doc/guix.texi (Prometheus Node Exporter Service): Remove trailing whitespace
and change "defvr" to "defvar".

* gnu/services/monitoring.scm (prometheus-node-exporter-service-type):
New variable.
(<prometheus-node-exporter-configuration>): New record type.
(prometheus-node-exporter-shepherd-service): New procedure.
* gnu/doc/guix.texi (Monitoring Services): Document it.
* gnu/tests/monitoring.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add test module.