Generate 'guix-ENTRY-TYPE-BUFFER-TYPE-titles' variables for each
ENTRY-TYPE and BUFFER-TYPE instead.

* emacs/guix-base.el (guix-param-titles): Remove.
  (guix-buffer-data): New variable.
  (guix-buffer-value, guix-buffer-param-title): New procedures.
  (guix-buffer-define-interface): Add ':titles' keyword.
* emacs/guix-info.el (guix-info-param-title): Adjust accordingly.
* emacs/guix-list.el (guix-list-param-title): Likewise.
  (guix-list-column-titles): Remove.
* doc/emacs.texi (Emacs Appearance): Adjust accordingly.

* emacs/guix-info.el: Generate 'guix-ENTRY-TYPE-info-format' variables
  for 'package', 'installed-output', 'output' and 'generation' entry
  types.
  (guix-info-format): Remove.
  (guix-info-data): New variable.
  (guix-info-value): New procedure.
  (guix-info-define-interface): Add ':format' keyword.
* emacs/guix-base.el (guix-buffer-define-interface): Add ':reduced?'
  keyword.
* doc/emacs.texi (Emacs Appearance): Adjust accordingly.

* emacs/guix-info.el: Use a more flexible format for inserting any data.
  (guix-info-ignore-empty-vals): Rename to...
  (guix-info-ignore-empty-values): ... this.
  (guix-info-insert-methods): Merge this and...
  (guix-info-displayed-params): ... this into...
  (guix-info-format): ... this.  Change format specifications.
  (guix-info-title-aliases, guix-info-value-aliases): New variables.
  (guix-info-displayed-params): Adjust for the new format.
  (guix-info-insert-entry): Likewise.
  (guix-package-info-fill-heading): Replace with...
  (guix-info-fill): ... this.
  (guix-info-insert-param): Replace with...
  (guix-info-insert-entry-unit): ... this.
  (guix-info-insert-title-default): Replace with...
  (guix-info-insert-title-format): ... this.
  (guix-info-insert-val-default): Replace with...
  (guix-info-insert-value-format): ... this.
  (guix-info-insert-val-simple): Replace with...
  (guix-info-insert-value-indent): ... this.
  (guix-package-info-insert-source): Adjust accordingly.
  (guix-package-info-insert-heading): Insert only name and version.
  (guix-package-info-define-insert-inputs): Do not generate
  'guix-package-info-insert-ENTRY-TYPE-inputs' procedures.
  (guix-info-fill-column, guix-info-insert-entry-default)
  (guix-info-method-funcall, guix-info-insert-file-path)
  (guix-info-insert-url, guix-info-insert-package-function)
  (guix-info-insert-installed-function)
  (guix-info-insert-output-function)
  (guix-info-insert-generation-function)
  (guix-package-info-heading-params)
  (guix-package-info-insert-with-heading)
  (guix-package-info-insert-description)
  (guix-package-info-insert-location)
  (guix-package-info-insert-full-names)
  (guix-package-info-insert-source-url): Remove.
  (guix-info-fill-column, guix-info-param-title)
  (guix-info-title-function, guix-info-value-function)
  (guix-info-title-method->function)
  (guix-info-value-method->function)
  (guix-info-insert-value-simple): New procedures.
* emacs/guix-utils.el (guix-buttonize, guix-button-type?): New
  procedures.
  (guix-split-string): Split multi-line strings and ignore empty lines.
* doc/emacs.texi (Emacs Appearance): Adjust accordingly.

* emacs/guix-list.el: Generate 'guix-ENTRY-TYPE-list-format' variables
  for 'package', 'output' and 'generation' entry types.
  (guix-list-format): Remove.
  (guix-list-define-entry-type): Add ':format' keyword.
* doc/emacs.texi (Emacs Appearance): Adjust accordingly.

* emacs/guix-list.el: (guix-list-column-format): Merge this and...
  (guix-list-column-value-methods): ... this into...
  (guix-list-format): ... this.  New variable.
  (guix-list-tabulated-vector): Adjust accordingly.
  (guix-list-tabulated-format): Likewise.
  (guix-list-tabulated-entry): Likewise.
* doc/emacs.texi (Emacs Appearance): Likewise.

* doc/guix.texi (Binary Installation): Be more precise about signature
verification.  Suggested by Carl Hansen <carlhansen1234@gmail.com>.

* nix/libstore/build.cc (DerivationGoal::startBuilder): Use "guix-build"
instead of "nix-build" for TMPDIR.
* doc/guix.texi (Build Environment Setup): Adjust accordingly.

Fixes <http://bugs.gnu.org/22176>.
Reported by Florian Paul Schmidt <mista.tapas@gmx.net>.

* gnu/system/file-systems.scm (<file-system>)[mount?]: New field.
(file-system->spec): Adjust accordingly.
* gnu/services/base.scm (file-system-dmd-service): Return the empty list
when FILE-SYSTEM has 'mount?' set to false.
(user-processes-service): Select the subset of FILE-SYSTEMS that matches
'file-system-mount?'.
* doc/guix.texi (File Systems): Document it.

* doc/guix.texi (Preparing for Installation): Point out relationship
between partition labels and the file-system configuration.

* doc/guix.texi: The CRAN importer no longer extracts information from
  the HTML package description but from the package's DESCRIPTION file.

* gnu/services/mail.scm: New file.
(&dovecot-configuration-error, dovecot-configuration-error?)
(dovecot-service, dovecot-configuration, dict-configuration)
(passdb-configuration, userdb-configuration)
(unix-listener-configuration, fifo-listener-configuration)
(inet-listener-configuration, service-configuration)
(protocol-configuration, plugin-configuration, mailbox-configuration)
(namespace-configuration, opaque-dovecot-configuration): New public
variables.

* gnu-system.am (GNU_SYSTEM_MODULES): Add (gnu services mail).

* doc/guix.texi (Mail Services): New node.

Suggested by Leo Famulari <leo@famulari.name>.

* doc/guix.texi (package Reference): Explain 'propagated-inputs' for
non-C languages.

* guix/gexp.scm (<local-file>): Rename constructor to '%%local-file'.
Add 'absolute' field.
(%local-file, extract-directory, absolute-file-name): New procedures.
(current-source-directory): New macro.
(local-file): Adjust call to '%local-file'.
(local-file-absolute-file-name): New procedure.
(local-file-compiler): Force the 'absolute' field.
* tests/guix-system.sh: Test whether 'local-file' canonicalization
works.
* doc/guix.texi (G-Expressions): Adjust.

* nix/nix-daemon/guix-daemon.cc (GUIX_OPT_BUILD_ROUNDS): New macro.
(options): Add --rounds.
(parse_opt): Honor it.
* doc/guix.texi (Invoking guix-daemon): Document it.

* doc/guix.texi (package Reference): Reword explanation of 'inputs',
'native-inputs', and 'propagated-inputs'.  Add example.

* doc/guix.texi (Setuid Programs): Remove extra 's'.

* doc/contributing.texi (Contributing): Rephrase 'code of conduct'
  section.

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

* CODE-OF-CONDUCT: New file, adapted from
  <http://contributor-covenant.org/version/1/3/0/code_of_conduct.txt>.
* doc/contributing.texi (Contributing): Mention it.
* Makefile.am (EXTRA_DIST): Add it.

Rather than using $<host-TMPDIR>/nix-build-<drvname>-<number>, the
temporary directory is now always /tmp/nix-build-<drvname>-0. This
improves bitwise-exact reproducibility for builds that store $TMPDIR
in their build output. (Of course, those should still be fixed...)

* nix/libstore/build.cc (DerivationGoal)[tmpDirInSandbox]: New field.
(DerivationGoal::startBuilder): Initialize 'useChroot' earlier.  Compute
'tmpDirInSandbox', and use it when populating 'dirsInChroot'.
* doc/guix.texi (Build Environment Setup): Document it.

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

* guix/derivations.scm (build-derivations): Add optional 'mode'
parameter.
* guix/scripts/build.scm (%default-options): Add 'build-mode'.
(show-help, %options): Add '--check'.
(guix-build): Honor 'build-mode' key of OPTS.  Pass it to
'show-what-to-build' and 'build-derivations'.
* doc/guix.texi (Invoking guix build): Document it.
(Substitutes): Mention it.

* guix/scripts/build.scm (show-build-options-help)
(%standard-build-options): Add --rounds.
(set-build-options-from-command-line): Honor it.
* doc/guix.texi (Invoking guix build): Document it.
* doc/contributing.texi (Submitting Patches): Mention it.

* guix/gnu-maintenance.scm (ftp-server/directory)[quirks]: Remove glib.
(false-if-ftp-error): New macro.
(latest-release*): Use it.
(non-emacs-gnu-package?): Rename to...
(pure-gnu-package?): ... this.  Add call to 'gnome-package?'.
(%gnu-updater): Adjust accordingly.
(gnome-package?, latest-gnome-release): New procedures.
(%gnome-updater): New variable.
* guix/scripts/refresh.scm (%updaters): Add %GNOME-UPDATER.
* doc/guix.texi (Invoking guix refresh): Mention it.

* doc/guix.texi (Invoking guix environment): Remove outdated mention of
'/env' for '--container'.

Suggested by Florian Paul Schmidt <mista.tapas@gmx.net>.

* doc/guix.texi (Using the Configuration System): Mention
'specification->package'.

* gnu/services/networking.scm (tor-configuration->torrc): Add
'DataDirectory' clause.  Change 'HiddenServiceDir' to
/var/lib/tor/hidden-services/NAME.
(tor-hidden-service-activation): Create /var/lib/tor.
(tor-hidden-service): Adjust docstring.
* doc/guix.texi (Networking Services): Adjust accordingly.

* gnu/services/networking.scm (<tor-configuration>, <hidden-service>):
New record types.
(tor-configuration->torrc): New procedure.
(tor-dmd-service): Use it.
(tor-hidden-service-activation): New procedure.
(tor-service-type)[extensions]: Extend ACTIVATION-SERVICE-TYPE.
[compose, extend]: New fields.
(tor-service): Use 'tor-configuration'.
(tor-hidden-service-type): New variable.
(tor-hidden-service): New procedure.

* etc/guix-daemon.conf.in: New file.
* daemon.am (CLEANFILES): Add etc/guix-daemon.conf.
  (upstartjobdir, nodist_upstartjob_DATA): New variables.
  (EXTRA_DIST): Add etc/guix-daemon.conf.in.
* doc/guix.texi (Binary Installation, Build Environment Setup): Mention
  'guix-daemon.conf'.

Signed-off-by: Mario Daniel Ruiz Saavedra <desiderantes@rocketmail.com>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

Fixes <http://bugs.gnu.org/21289>.

* guix/scripts/lint.scm (package-name->cpe-name, package-vulnerabilities)
(check-vulnerabilities): New procedures.
* guix/scripts/lint.scm (%checkers): Add "cve" checker.
* tests/lint.scm ("cve", "cve: one vulnerability"): New tests.
* doc/guix.texi (Invoking guix lint): Mention it.

* doc/guix.texi (Base Services): Remove mention of a list of monadic
services.

* gnu/services/dmd.scm (%default-imported-modules, %default-modules):
New variables.
* gnu/services/dmd.scm (<dmd-service>)[modules, imported-modules]: New
field.
* gnu/services/dmd.scm (dmd-service-file-name, dmd-service-file): New
procedures.
(dmd-configuration-file)[modules]: Compute based on the
'imported-modules' field of SERVICES.
(dmd-configuration-file): Remove 'use-modules' form.  Use
'dmd-service-file', and call 'primitive-load' on each file.
* doc/guix.texi (dmd Services): Document the new fields.

* guix/scripts/graph.scm (bag-node-edges): Remove 'filter' call.  Add
case for 'origin'.
(%bag-node-type)[edges]: Add filtering here.
(%bag-with-origins-node-type): New variable.
(%node-types): Add it.
* tests/graph.scm ("bag DAG, including origins"): New test.
* tests/guix-graph.sh: Add 'bag-with-origins'.
* doc/guix.texi (Invoking guix graph): Document it.

Suggested by rgrau on #guix.

* doc/guix.texi (Invoking guix import): Document 'NIX_REMOTE'.

* guix/scripts/refresh.scm (%options, show-help): Add --expression.
(guix-refresh): Honor it.
* doc/guix.texi (Invoking guix refresh): Document it.

* doc/contributing.texi (Building from Git): Mention 'guix environment
guix'.  Remove outdated description of ./bootstrap.  Clarify a few
things.

* doc/contributing.texi (Building from Git): Remove extra "See" and use
@xref instead of @pxref.

Reported by marusich on #guix.

* doc/contributing.texi (The Perfect Setup): Wrap modifying
  'geiser-guile-load-path' into 'with-eval-after-load'.

Suggested by Alex Vong <alexvong1995@gmail.com>.

* doc/guix.texi (Application Setup): Explain how to install X11 fonts
  for Asian languages.

* doc/guix.texi (operating-system Reference): The 'services' field now
  contains a list of service objects.

Suggested by Andreas Enge <andreas@enge.fr>.

* guix/scripts/edit.scm (%editor): Honor 'VISUAL' before 'EDITOR'.
  (show-help): Adjust accordingly.
* doc/guix.texi (Invoking guix edit): Likewise.

Partly fixes <http://bugs.gnu.org/20255>.

* guix/scripts/package.scm (search-path-environment-variables): Change
  'profile' to 'profiles'; expect it to be a list.
  (display-search-paths): Likewise.
  (%default-options): Remove 'profile' entry.
  (%options) <--profile>: Keep previous values associated with 'profile'
  in RESULT.
  (guix-package)[process-actions, process-query]: Handle the possible
  lack of 'profile' pair in OPTS.