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-rw-r--r--gnu/services/security-token.scm25
1 files changed, 17 insertions, 8 deletions
diff --git a/gnu/services/security-token.scm b/gnu/services/security-token.scm
index 7e7ea54a50..354549b33c 100644
--- a/gnu/services/security-token.scm
+++ b/gnu/services/security-token.scm
@@ -20,6 +20,7 @@
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu packages admin)
+ #:use-module (gnu packages base)
#:use-module (gnu packages security-token)
#:use-module (gnu system shadow)
#:use-module (guix gexp)
@@ -62,14 +63,22 @@
(define pcscd-activation
(match-lambda
(($ <pcscd-configuration> pcsc-lite usb-drivers)
- #~(begin
- (use-modules (guix build utils))
- (mkdir-p "/var/lib")
- (symlink #$(directory-union
- "pcsc"
- (map (cut file-append <> "/pcsc")
- usb-drivers))
- "/var/lib/pcsc")))))
+ (with-imported-modules (source-module-closure
+ '((guix build utils)))
+ #~(begin
+ (use-modules (guix build utils))
+ ;; XXX: We can't use (guix utils) because it requires a
+ ;; dynamically-linked Guile, hence the duplicate switch-symlinks.
+ (define (switch-symlinks link target)
+ (let ((pivot (string-append link ".new")))
+ (symlink target pivot)
+ (rename-file pivot link)))
+ (mkdir-p "/var/lib")
+ (switch-symlinks "/var/lib/pcsc"
+ #$(directory-union
+ "pcsc"
+ (map (cut file-append <> "/pcsc")
+ usb-drivers))))))))
(define pcscd-service-type
(service-type