refactor(tvix/glue): add BuildService to TvixStoreIO

TvixStoreIO triggers builds whenever IO into a not-yet-built store path
is requested, if it knows how to build that path.

Change-Id: If30e9db6be2f2a30cbc9d0576f357f3ecfa0d35a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10645
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI

tvix/glue/src/tests/mod.rs

@@ -2,6 +2,7 @@ use std::{rc::Rc, sync::Arc};
 
 use pretty_assertions::assert_eq;
 use std::path::PathBuf;
+use tvix_build::buildservice::DummyBuildService;
 use tvix_castore::{
     blobservice::{BlobService, MemoryBlobService},
     directoryservice::{DirectoryService, MemoryDirectoryService},
@@ -43,6 +44,7 @@ fn eval_test(code_path: PathBuf, expect_success: bool) {
         blob_service,
         directory_service,
         path_info_service.into(),
+        Arc::new(DummyBuildService::default()),
         tokio_runtime.handle().clone(),
     ));
     let mut eval = tvix_eval::Evaluation::new(tvix_store_io.clone() as Rc<dyn EvalIO>, true);