refactor(tvix/castore): drop {Directory,File,Symlink}Node r/8505

Add a `SymlinkTarget` type to represent validated symlink targets.
With this, no invalid states are representable, so we can make `Node` be
just an enum of all three kind of types, and allow access to these
fields directly.

Change-Id: I20bdd480c8d5e64a827649f303c97023b7e390f2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12216
Reviewed-by: benjaminedwardwebb <benjaminedwardwebb@gmail.com>
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: Connor Brewster <cbrewster@hey.com>
Tested-by: BuildkiteCI

1 files changed, 5 insertions, 3 deletions

diff --git a/tvix/glue/src/tvix_build.rs b/tvix/glue/src/tvix_build.rs
index 77fa5d92a197..b466ff458f6e 100644
--- a/tvix/glue/src/tvix_build.rs
+++ b/tvix/glue/src/tvix_build.rs
@@ -200,7 +200,7 @@ mod test {
         BuildRequest,
     };
     use tvix_castore::fixtures::DUMMY_DIGEST;
-    use tvix_castore::{DirectoryNode, Node};
+    use tvix_castore::Node;
 
     use crate::tvix_build::NIX_ENVIRONMENT_VARS;
 
@@ -209,8 +209,10 @@ mod test {
 
     lazy_static! {
         static ref INPUT_NODE_FOO_NAME: Bytes = "mp57d33657rf34lzvlbpfa1gjfv5gmpg-bar".into();
-        static ref INPUT_NODE_FOO: Node =
-            Node::Directory(DirectoryNode::new(DUMMY_DIGEST.clone(), 42,));
+        static ref INPUT_NODE_FOO: Node = Node::Directory {
+            digest: DUMMY_DIGEST.clone(),
+            size: 42
+        };
     }
 
     #[test]