Add query for existence of package

[hcoop/domtool2.git] / src / plugins / apt.sig

diff --git a/src/plugins/apt.sig b/src/plugins/apt.sig
index 2ab4f50..2546fd5 100644 (file)
--- a/src/plugins/apt.sig
+++ b/src/plugins/apt.sig
@@ -20,6 +20,9 @@
 
 signature APT = sig
 
+    val exists : string -> bool
+    (* Does the package exist on this host? *)
+
     val installed : string -> bool
     (* Is the named package installed on this host? *)