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| author | Bruno Victal <mirai@makinata.eu> | 2022-12-01 18:09:47 +0000 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2022-12-08 13:07:46 +0100 |
| commit | 9336baf258d6fc19e5dfa5bcfc7892d239f24837 (patch) | |
| tree | 664d3b95f22a928ea6033d8738de775f25925d18 | |
| parent | cc6b88d00d8ba696ca49846d60c415f7668f9d62 (diff) | |
| download | guix-9336baf258d6fc19e5dfa5bcfc7892d239f24837.tar.gz | |
services: configuration: Rewrite 'alist?' procedure.
* gnu/services/configuration.scm (alist?): Rewrite. Co-authored-by: Ludovic Courtès <ludo@gnu.org>
| -rw-r--r-- | gnu/services/configuration.scm | 6 |
1 files changed, 5 insertions, 1 deletions
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) |