nar: Access the database instead of connecting to the daemon.

* guix/store/database.scm (%default-database-file): New variable.
(path-id): Export.
* guix/nar.scm (finalize-store-file): Use 'with-database' instead of
'with-store', and use 'path-id' instead of 'valid-path?'.

1 files changed, 6 insertions, 0 deletions

diff --git a/guix/store/database.scm b/guix/store/database.scm
index 341276bc30..38796910da 100644
--- a/guix/store/database.scm
+++ b/guix/store/database.scm
@@ -36,7 +36,9 @@
   #:use-module (ice-9 match)
   #:use-module (system foreign)
   #:export (sql-schema
+            %default-database-file
             with-database
+            path-id
             sqlite-register
             register-path
             register-items
@@ -85,6 +87,10 @@ create it and initialize it as a new database."
                   (lambda ()
                     (sqlite-close db)))))
 
+(define %default-database-file
+  ;; Default location of the store database.
+  (string-append %store-database-directory "/db.sqlite"))
+
 (define-syntax-rule (with-database file db exp ...)
   "Open DB from FILE and close it when the dynamic extent of EXP... is left.
 If FILE doesn't exist, create it and initialize it as a new database."