refactor(tvix/{cli,store}): move TvixStoreIO to tvix-cli crate r/6550

This trait is eval-specific, there's no point in dealing with these
things in tvix-store.

This implements the EvalIO interface for a Tvix store.
The proper place for this glue code (for now) is tvix-cli, which knows
about both tvix-store and tvix-eval.

There's one annoyance with this move: The `tvix-store import` subcommand
previously also used the TvixStoreIO implementation (because it
conveniently did what we wanted).
Some of this code had to be duplicated, mostly logic to calculate the
NAR-based output path and create the PathInfo object.

Some, but potentially more of this can be extracted into helper
functions in a shared crate, and then be used from both TvixStoreIO in
tvix-cli as well as the tvix-store CLI entrypoint.

Change-Id: Ia7515e83c1b54f95baf810fbd8414c5521382d40
Reviewed-on: https://cl.tvl.fyi/c/depot/+/9212
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>
Autosubmit: flokli <flokli@flokli.de>

1 files changed, 3 insertions, 1 deletions

diff --git a/tvix/cli/src/main.rs b/tvix/cli/src/main.rs
index 5a7342e76593..1980ac1731e7 100644
--- a/tvix/cli/src/main.rs
+++ b/tvix/cli/src/main.rs
@@ -3,6 +3,7 @@ mod errors;
 mod known_paths;
 mod refscan;
 mod tvix_io;
+mod tvix_store_io;
 
 use std::cell::RefCell;
 use std::rc::Rc;
@@ -17,6 +18,7 @@ use tvix_eval::Value;
 use tvix_store::blobservice::MemoryBlobService;
 use tvix_store::directoryservice::MemoryDirectoryService;
 use tvix_store::pathinfoservice::MemoryPathInfoService;
+use tvix_store_io::TvixStoreIO;
 
 #[derive(Parser)]
 struct Args {
@@ -80,7 +82,7 @@ fn interpret(code: &str, path: Option<PathBuf>, args: &Args, explain: bool) -> b
 
     eval.io_handle = Box::new(tvix_io::TvixIO::new(
         known_paths.clone(),
-        tvix_store::TvixStoreIO::new(blob_service, directory_service, path_info_service),
+        TvixStoreIO::new(blob_service, directory_service, path_info_service),
     ));
 
     // bundle fetchurl.nix (used in nixpkgs) by resolving <nix> to