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| author | Ekaitz Zarraga <ekaitz@elenq.tech> | 2020-05-16 19:57:18 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2020-05-18 15:08:58 +0200 |
| commit | 9a27d84b7a22188d3029199ad3f6dd3b8eccae70 (patch) | |
| tree | 6aca3c26cdb82e23a21ae914292c51bff57638a6 | |
| parent | e5b495c18fb9ba3858b75c25659be65f7bd9b0da (diff) | |
| download | gnu-guix-9a27d84b7a22188d3029199ad3f6dd3b8eccae70.tar gnu-guix-9a27d84b7a22188d3029199ad3f6dd3b8eccae70.tar.gz | |
guix describe: Add '--list-formats'
* guix/scripts/describe.scm (%available-formats): New variable.
(list-formats): New procedure.
(%options, show-help): Add --list-formats
* doc/guix.texi: Add --list-formats
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
| -rw-r--r-- | doc/guix.texi | 3 | ||||
| -rw-r--r-- | guix/scripts/describe.scm | 17 |
2 files changed, 19 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 34acc910f0..eef5b703fe 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -4471,6 +4471,9 @@ produce a list of channel specifications in JSON format; produce a list of channel specifications in Recutils format. @end table +@item --list-formats +Display available formats for @option{--format} option. + @item --profile=@var{profile} @itemx -p @var{profile} Display information about @var{profile}. diff --git a/guix/scripts/describe.scm b/guix/scripts/describe.scm index f13f221da9..7a2dbc453a 100644 --- a/guix/scripts/describe.scm +++ b/guix/scripts/describe.scm @@ -1,6 +1,7 @@ ;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com> +;;; Copyright © 2020 Ekaitz Zarraga <ekaitz@elenq.tech> ;;; ;;; This file is part of GNU Guix. ;;; @@ -41,14 +42,26 @@ ;;; ;;; Command-line options. ;;; +(define %available-formats '("human" "channels" "json" "recutils")) + +(define (list-formats) + (display (G_ "The available formats are:\n")) + (newline) + (for-each (lambda (f) + (format #t " - ~a~%" f)) + %available-formats)) (define %options ;; Specifications of the command-line options. (list (option '(#\f "format") #t #f (lambda (opt name arg result) - (unless (member arg '("human" "channels" "json" "recutils")) + (unless (member arg %available-formats) (leave (G_ "~a: unsupported output format~%") arg)) (alist-cons 'format (string->symbol arg) result))) + (option '("list-formats") #f #f + (lambda (opt name arg result) + (list-formats) + (exit 0))) (option '(#\p "profile") #t #f (lambda (opt name arg result) (alist-cons 'profile (canonicalize-profile arg) @@ -71,6 +84,8 @@ Display information about the channels currently in use.\n")) (display (G_ " -f, --format=FORMAT display information in the given FORMAT")) (display (G_ " + --list-formats display available formats")) + (display (G_ " -p, --profile=PROFILE display information about PROFILE")) (newline) (display (G_ " |