1 files changed, 9 insertions, 12 deletions
diff --git a/src/libstore/schema.sql b/src/libstore/schema.sql
index e241329430..3c07978fc9 100644
--- a/src/libstore/schema.sql
+++ b/src/libstore/schema.sql
@@ -1,27 +1,24 @@
 pragma foreign_keys = on;
 
 create table if not exists ValidPaths (
-    path             text primary key not null,
+    id               integer primary key autoincrement not null,
+    path             text unique not null,
     hash             text not null,
     registrationTime integer not null
 );
 
 create table if not exists Refs (
-    referrer  text not null,
-    reference text not null,
+    referrer  integer not null,
+    reference integer not null,
     primary key (referrer, reference),
-    foreign key (referrer) references ValidPaths(path)
-      on delete cascade
-      deferrable initially deferred,
-    foreign key (reference) references ValidPaths(path)
-      on delete restrict
-      deferrable initially deferred
+    foreign key (referrer) references ValidPaths(id) on delete cascade,
+    foreign key (reference) references ValidPaths(id) on delete restrict
 );
 
+create index if not exists IndexReferrer on Refs(referrer);
+create index if not exists IndexReference on Refs(reference);
+
 create table if not exists FailedDerivations (
     path text primary key not null,
     time integer not null
 );
-
-create index IndexReferrer on Refs(referrer);
-create index IndexReference on Refs(reference);