civodul pushed a commit to branch master
in repository guix.
commit 9336baf258d6fc19e5dfa5bcfc7892d239f24837
Author: Bruno Victal <[email protected]>
AuthorDate: Thu Dec 1 18:09:47 2022 +0000
services: configuration: Rewrite 'alist?' procedure.
* gnu/services/configuration.scm (alist?): Rewrite.
Co-authored-by: Ludovic Courtès <[email protected]>
---
gnu/services/configuration.scm | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/gnu/services/configuration.scm b/gnu/services/configuration.scm
index 2b3bd4c1f4..10cb933ed1 100644
--- a/gnu/services/configuration.scm
+++ b/gnu/services/configuration.scm
@@ -436,7 +436,11 @@ the list result in @code{#t} when applying PRED? on them."
(define list-of-strings?
(list-of string?))
-(define alist? list?)
+(define alist?
+ (match-lambda
+ (() #t)
+ ((head . tail) (and (pair? head) (alist? tail)))
+ (_ #f)))
(define serialize-file-like empty-serializer)
