bug#66754: [PATCH] add guix locate database is locked error message

[Maciej Kalandyk <m.kalandyk@outlook.com>]

Change-Id: Iebe76c75d45e70317bd18d2c176dcdeaf9d6964c
Signed-off-by: Maciej Kalandyk <m.kalandyk@outlook.com>
---
 guix/scripts/locate.scm | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/guix/scripts/locate.scm b/guix/scripts/locate.scm
index 93faa1aea2..a6b6036052 100644
--- a/guix/scripts/locate.scm
+++ b/guix/scripts/locate.scm
@@ -115,13 +115,21 @@ (define schema-to-migrate '((1 . "
 ")))
 
 (define (call-with-database file proc)
-  (let ((db (sqlite-open file)))
-    (dynamic-wind
-      (lambda () #t)
-      (lambda ()
-        (ensure-latest-database-schema db)
-        (proc db))
-      (lambda () (sqlite-close db)))))
+  (catch 'sqlite-error
+    (lambda ()
+      (let ((db (sqlite-open file)))
+        (dynamic-wind
+          (lambda () #t)
+          (lambda ()
+            (ensure-latest-database-schema db)
+            (proc db))
+          (lambda () (sqlite-close db)))))
+    (lambda (key . args)
+      (match args
+        [(_ 5 _)
+         (leave (G_ "database ~a is locked by another process~%")
+                file)]
+        [_ (apply throw (cons key args))]))))
 
 (define (ensure-latest-database-schema db)
   "Ensure DB follows the latest known version of the schema."

base-commit: 6d7e181ba18d11c92409a93936025fb46b9c8171
prerequisite-patch-id: 9ba8ba9723e24b3d15f07622ff1c5ae78567f6cd
-- 
2.41.0