refactor(tvix/castore): move *Node and Directory to crate root r/8486

*Node and Directory are types of the tvix-castore model, not the tvix
DirectoryService model. A DirectoryService only happens to send
Directories.

Move types into individual files in a nodes/ subdirectory, as it's
gotten too cluttered in a single file, and (re-)export all types from
the crate root.

This has the effect that we now cannot poke at private fields directly
from other files inside `crate::directoryservice` (as it's not all in
the same file anymore), but that's a good thing, it now forces us to go
through the proper accessors.

For the same reasons, we currently also need to introduce the `rename`
functions on each *Node directly.

A followup is gonna move the names out of the individual enum kinds, so
we can better represent "unnamed nodes".

Change-Id: Icdb34dcfe454c41c94f2396e8e99973d27db8418
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12199
Reviewed-by: yuka <yuka@yuka.dev>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 2 insertions, 3 deletions

diff --git a/tvix/store/src/proto/mod.rs b/tvix/store/src/proto/mod.rs
index 5434df49daaa..375fb0dcadb8 100644
--- a/tvix/store/src/proto/mod.rs
+++ b/tvix/store/src/proto/mod.rs
@@ -9,8 +9,7 @@ use nix_compat::{
     store_path::{self, StorePathRef},
 };
 use thiserror::Error;
-use tvix_castore::directoryservice::NamedNode;
-use tvix_castore::ValidateNodeError;
+use tvix_castore::{NamedNode, ValidateNodeError};
 
 mod grpc_pathinfoservice_wrapper;
 
@@ -162,7 +161,7 @@ impl PathInfo {
             None => Err(ValidatePathInfoError::NoNodePresent)?,
             Some(node) => {
                 // TODO save result somewhere
-                let node: tvix_castore::directoryservice::Node = node
+                let node: tvix_castore::Node = node
                     .try_into()
                     .map_err(ValidatePathInfoError::InvalidRootNode)?;
                 // parse the name of the node itself and return