Improve nested operations support

The idea is this: we need to be able to override "conditional, inner
for outer" recipes with the "unconditional inner" ones. Here is the
concrete scenario: we have {update, test} action and the lib{} target
that is both mentioned as a prerequisite of ./ and exe{}, which is a
test. At first, we want to ignore lib{} when reached as a prerequisite
of ./. But then we get to it via exe{} (which is a test and thus should
be updated). At this point we should override the recipe for lib{} with
the one that would update it rather than ignore.

1 files changed, 1 insertions, 1 deletions

diff --git a/build/cli/target b/build/cli/target
index 06bc311..7ee9a98 100644
--- a/build/cli/target
+++ b/build/cli/target
@@ -47,7 +47,7 @@ namespace build
       };
 
       virtual group_view
-      group_members (action) const;
+      group_members (action_type) const;
 
       virtual timestamp
       load_mtime () const;