[bug#50314] [PATCH 1/2] import: Add hint for importer typo.

[zimoun <zimon.toutoune@gmail.com>]

* guix/scripts/import.scm (define-command): Add hint.
---
 guix/scripts/import.scm | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/guix/scripts/import.scm b/guix/scripts/import.scm
index b369a362d0..11e94769bb 100644
--- a/guix/scripts/import.scm
+++ b/guix/scripts/import.scm
@@ -3,6 +3,7 @@
 ;;; Copyright © 2014 David Thompson <davet@gnu.org>
 ;;; Copyright © 2018 Kyle Meyer <kyle@kyleam.com>
 ;;; Copyright © 2019 Ricardo Wurmus <rekado@elephly.net>
+;;; Copyright © 2021 Simon Tournier <zimon.toutoune@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -130,4 +131,9 @@ Run IMPORTER with ARGS.\n"))
                         expressions))
              (x
               (leave (G_ "'~a' import failed~%") importer))))
-         (leave (G_ "~a: invalid importer~%") importer)))))
+         (let ((hint (string-closest importer importers #:threshold 3)))
+           (report-error (G_ "~a: invalid importer~%") importer)
+           (when hint
+             (display-hint
+              (format #f (G_ "Did you mean @code{~a}?~%") hint)))
+           (exit 1))))))
-- 
2.29.2