Come up with better version for uncommitted snapshots

Instead of leaving it as .z we now take the date of the previous commit and
increment it by a second. The main benefit of doing it this way is that once
committed, the new version does not "jump back" behind .z.

1 files changed, 8 insertions, 2 deletions

diff --git a/build2/version/module.hxx b/build2/version/module.hxx
index 190d8d7..a5a667a 100644
--- a/build2/version/module.hxx
+++ b/build2/version/module.hxx
@@ -25,13 +25,19 @@ namespace build2
       static const string name;
 
       butl::standard_version version;
+      bool committed; // Whether this is a committed snapshot.
+
       dependency_constraints dependencies;
 
       const variable* in_symbol       = nullptr; // in.symbol
       const variable* in_substitution = nullptr; // in.substitution
 
-      module (butl::standard_version v, dependency_constraints d)
-          : version (move (v)), dependencies (move (d)) {}
+      module (butl::standard_version v,
+              bool c,
+              dependency_constraints d)
+          : version (move (v)),
+            committed (c),
+            dependencies (move (d)) {}
     };
   }
 }