refactor(tvix): move castore into tvix-castore crate r/6629

This splits the pure content-addressed layers from tvix-store into a
`castore` crate, and only leaves PathInfo related things, as well as the
CLI entrypoint in the tvix-store crate.

Notable changes:
 - `fixtures` and `utils` had to be moved out of the `test` cfg, so they
   can be imported from tvix-store.
 - Some ad-hoc fixtures in the test were moved to proper fixtures in the
   same step.
 - The protos are now created by a (more static) recipe in the protos/
   directory.

The (now two) golang targets are commented out, as it's not possible to
update them properly in the same CL. This will be done by a followup CL
once this is merged (and whitby deployed)

Bug: https://b.tvl.fyi/issues/301

Change-Id: I8d675d4bf1fb697eb7d479747c1b1e3635718107
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9370
Reviewed-by: tazjin <tazjin@tvl.su>
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
Reviewed-by: Connor Brewster <cbrewster@hey.com>

1 files changed, 0 insertions, 62 deletions

diff --git a/tvix/store/protos/castore.proto b/tvix/store/protos/castore.proto
deleted file mode 100644
index 347815107198..000000000000
--- a/tvix/store/protos/castore.proto
+++ /dev/null
@@ -1,62 +0,0 @@
-// SPDX-FileCopyrightText: edef <edef@unfathomable.blue>
-// SPDX-License-Identifier: OSL-3.0 OR MIT OR Apache-2.0
-
-syntax = "proto3";
-
-package tvix.store.v1;
-
-option go_package = "code.tvl.fyi/tvix/store/protos;storev1";
-
-// A Directory can contain Directory, File or Symlink nodes.
-// Each of these nodes have a name attribute, which is the basename in that directory
-// and node type specific attributes.
-// The name attribute:
-//  - MUST not contain slashes or null bytes
-//  - MUST not be '.' or '..'
-//  - MUST be unique across all three lists
-// Elements in each list need to be lexicographically ordered by the name
-// attribute.
-message Directory {
-    repeated DirectoryNode directories = 1;
-    repeated FileNode files = 2;
-    repeated SymlinkNode symlinks = 3;
-}
-
-// A DirectoryNode represents a directory in a Directory.
-message DirectoryNode {
-    // The (base)name of the directory
-    bytes name = 1;
-    // The blake3 hash of a Directory message, serialized in protobuf canonical form.
-    bytes digest = 2;
-    // Number of child elements in the Directory referred to by `digest`.
-    // Calculated by summing up the numbers of `directories`, `files` and
-    // `symlinks`, and for each directory, its size field. Used for inode
-    // number calculation.
-    // This field is precisely as verifiable as any other Merkle tree edge.
-    // Resolve `digest`, and you can compute it incrementally. Resolve the
-    // entire tree, and you can fully compute it from scratch.
-    // A credulous implementation won't reject an excessive size, but this is
-    // harmless: you'll have some ordinals without nodes. Undersizing is
-    // obvious and easy to reject: you won't have an ordinal for some nodes.
-    uint32 size = 3;
-}
-
-// A FileNode represents a regular or executable file in a Directory.
-message FileNode {
-    // The (base)name of the file
-    bytes name = 1;
-    // The blake3 digest of the file contents
-    bytes digest = 2;
-    // The file content size
-    uint32 size = 3;
-    // Whether the file is executable
-    bool executable = 4;
-}
-
-// A SymlinkNode represents a symbolic link in a Directory.
-message SymlinkNode {
-    // The (base)name of the symlink
-    bytes name = 1;
-    // The target of the symlink.
-    bytes target = 2;
-}