feat(nix-compat/wire/bytes/reader): support buffered reading r/8086

If our underlying reader supports AsyncBufRead, then we can too.

Change-Id: If4b948c983400ca591c1c475bbcf7dc00d562040
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11545
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 1 insertions, 2 deletions

diff --git a/tvix/store/src/nar/import.rs b/tvix/store/src/nar/import.rs
index cc62c1a4e9..7a9f1231e7 100644
--- a/tvix/store/src/nar/import.rs
+++ b/tvix/store/src/nar/import.rs
@@ -70,8 +70,7 @@ where
         } => {
             let (digest, size) = {
                 let mut blob_writer = blob_service.open_write().await;
-                // TODO(edef): fix the AsyncBufRead implementation of nix_compat::wire::BytesReader
-                let size = tokio::io::copy(&mut reader, &mut blob_writer).await?;
+                let size = tokio::io::copy_buf(&mut reader, &mut blob_writer).await?;
 
                 (blob_writer.close().await?, size)
             };