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| author | Ludovic Courtès <ludo@gnu.org> | 2020-04-20 22:31:38 +0200 |
|---|---|---|
| committer | Ludovic Courtès <ludo@gnu.org> | 2020-04-21 00:06:40 +0200 |
| commit | a322e9d16b227484ce04721fee0f99618cb1007e (patch) | |
| tree | 5ea8a61cf9d7ebc3d6ca360e10d1899862fad382 | |
| parent | b25ecfa2e0ab6642dc35f7f68a24117e33f5795f (diff) | |
| download | guix-a322e9d16b227484ce04721fee0f99618cb1007e.tar guix-a322e9d16b227484ce04721fee0f99618cb1007e.tar.gz | |
services: etc: Detect and report duplicate entries.
Fixes <https://bugs.gnu.org/40729>.
Reported by Christopher Baines <mail@cbaines.net>.
* gnu/services.scm (files->etc-directory)[assert-no-duplicates]: New
procedure.
Use it.
| -rw-r--r-- | gnu/services.scm | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gnu/services.scm b/gnu/services.scm index 832d6984d8..126e0814eb 100644 --- a/gnu/services.scm +++ b/gnu/services.scm @@ -632,6 +632,23 @@ and FILE could be \"/usr/bin/env\"." (files->etc-directory (service-value service))) (define (files->etc-directory files) + (define (assert-no-duplicates files) + (let loop ((files files) + (seen (set))) + (match files + (() #t) + (((file _) rest ...) + (when (set-contains? seen file) + (raise (condition + (&message + (message (format #f (G_ "duplicate '~a' entry for /etc") + file)))))) + (loop rest (set-insert file seen)))))) + + ;; Detect duplicates early instead of letting them through, eventually + ;; leading to a build failure of "etc.drv". + (assert-no-duplicates files) + (file-union "etc" files)) (define (etc-entry files) |