[bug#66592] [PATCH] scripts: archive: Check compatibility of command line options.

[Simon Tournier <zimon.toutoune@gmail.com>]

Fixes <https://issues.guix.gnu.org/66358>.
Reported by Perry, Daniel J <dperry45@gatech.edu>.

* guix/scripts/archive.scm (compatible-option): New procedure.
(%options): Use it.
---
 guix/scripts/archive.scm | 23 ++++++++++++++++++++---
 1 file changed, 20 insertions(+), 3 deletions(-)

diff --git a/guix/scripts/archive.scm b/guix/scripts/archive.scm
index 2b5a55a23f..a1b2b73a0f 100644
--- a/guix/scripts/archive.scm
+++ b/guix/scripts/archive.scm
@@ -1,6 +1,7 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2020 Tobias Geerinckx-Rice <me@tobias.gr>
+;;; Copyright © 2023 Simon Tournier <zimon.toutoune@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -115,6 +116,22 @@ (define %key-generation-parameters
       "(genkey (ecdsa (curve Ed25519) (flags rfc6979)))"
       "(genkey (rsa (nbits 4:4096)))"))
 
+(define* (compatible-option result
+                            #:optional
+                            (actions (list 'authorize 'export 'import)))
+  "Return the RESULT if it is compatible with the list of ACTIONS."
+  (let ((some-actions (fold (lambda (action answers)
+                              (if (assoc-ref result action)
+                                  (cons action answers)
+                                  answers))
+                            '()
+                            actions)))
+    (match some-actions
+      ((action)
+       result)
+      ((action other-action _ ...)
+       (leave (G_ "ambiguous options: ~s with ~s~%") action other-action)))))
+
 (define %options
   ;; Specifications of the command-line options.
   (cons* (option '(#\h "help") #f #f
@@ -126,13 +143,13 @@ (define %options
                    (show-version-and-exit "guix archive")))
          (option '("export") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'export #t result)))
+                   (compatible-option (alist-cons 'export #t result))))
          (option '(#\r "recursive") #f #f
                  (lambda (opt name arg result)
                    (alist-cons 'export-recursive? #t result)))
          (option '("import") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'import #t result)))
+                   (compatible-option (alist-cons 'import #t result))))
          (option '("missing") #f #f
                  (lambda (opt name arg result)
                    (alist-cons 'missing #t result)))
@@ -158,7 +175,7 @@ (define %options
                               (error-string err))))))
          (option '("authorize") #f #f
                  (lambda (opt name arg result)
-                   (alist-cons 'authorize #t result)))
+                   (compatible-option (alist-cons 'authorize #t result))))
 
          (option '(#\S "source") #f #f
                  (lambda (opt name arg result)

base-commit: dcc5c34504c94732c135a85fb4db40ca9796270e
-- 
2.38.1