The previous '--verbosity' option was misleading and rarely what users
were looking for. The new option provides a consistent way to choose
whether or not to display the build log.
* guix/scripts/build.scm (show-build-options-help): Remove "--verbosity"
and add "--debug".
(set-build-options-from-command-line): Use the 'debug key of OPTS for
#:verbosity.
(%standard-build-options): Change "verbosity" to "debug". Use
'string->number*' instead of 'string->number'.
(%default-options): Change 'verbosity to 'debug and add a 'verbosity
key.
(show-help): Add '--verbosity'.
(%options): Likewise, and change '--quiet' to set the 'verbosity key of
RESULT.
(guix-build): Use 'with-status-verbosity' instead of parameterizing
CURRENT-BUILD-OUTPUT-PORT, honor the 'verbosity key of OPTS, and remove
'quiet?'.
* guix/scripts/environment.scm (show-help, %options): Add '--verbosity'.
(%default-options): Add 'debug'.
(guix-environment): Honor the 'verbosity key of OPTS.
* guix/scripts/pack.scm (%default-options): Add 'debug.
(%options, show-help): Add '--verbosity'.
(guix-pack): Honor the 'verbosity key of OPTS.
* guix/scripts/package.scm (%default-options): Add 'debug.
(show-help, %options): Add '--verbosity'. Mark '--verbose' as
deprecated and change it to set 'verbosity.
(guix-package): Honor the 'verbosity key of OPTS and remove 'verbose?'.
* guix/scripts/pull.scm (%default-options): Add 'debug.
(show-help, %options): Add '--verbosity'.
(guix-pull): Honor the 'verbosity key of OPTS.
* guix/scripts/system.scm (show-help, %options): Add '--verbosity'.
(%default-options): Add 'debug.
(guix-system): Honor the 'verbosity key of OPTS.
* guix/scripts/archive.scm (%default-options): Add 'debug,
'print-build-trace?, 'print-extended-build-trace?, and
'multiplexed-build-output?.
(show-help, %options): Add '--verbosity'.
(export-from-store): Remove call to 'set-build-options-from-command-line'.
(guix-archive): Wrap body in 'with-status-verbosity'. Add call to
'set-build-options-from-command-line.
* doc/guix.texi (Common Build Options): Document '--verbosity' and
'--debug'.
(Additional Build Options): Adjust description of '--quiet'.