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-rw-r--r--emacs/guix-main.scm11
1 files changed, 7 insertions, 4 deletions
diff --git a/emacs/guix-main.scm b/emacs/guix-main.scm
index bcff9ce985..da42450d80 100644
--- a/emacs/guix-main.scm
+++ b/emacs/guix-main.scm
@@ -293,8 +293,10 @@ Example:
(define (package-unique? package)
"Return #t if PACKAGE is a single package with such name/version."
- (null? (cdr (packages-by-name (package-name package)
- (package-version package)))))
+ (match (packages-by-name (package-name package)
+ (package-version package))
+ ((package) #t)
+ (_ #f)))
(define %package-param-alist
`((id . ,object-address)
@@ -330,8 +332,9 @@ Example:
;;; Finding packages.
(define (package-by-address address)
- (and=> (vhash-assq address %packages)
- cdr))
+ (match (vhash-assq address %packages)
+ ((_ . package) package)
+ (_ #f)))
(define (packages-by-name+version name version)
(or (hash-ref %package-table