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authoredef <edef@edef.eu>2023-11-19T06·24+0000
committeredef <edef@edef.eu>2023-11-19T09·53+0000
commit785ff80c8b8adad22927eee3a0c9c7aaa60072b3 (patch)
treedb718a0ac33086b3edafe8374ef8f5a407d532c3 /tvix/store/src/nar/import.rs
parent2eaee1d48e59e2a2c75493289e5e09aa14726f17 (diff)
fix(nix-compat/nar/reader): require BufRead r/7034
We rely on being able to make small reads cheaply, so this was already
an implicit practical requirement. Requiring it explicitly removes a
performance footgun, and makes further optimisations possible.

Change-Id: I7f65880a41b1d6b5e6bf2e52dfe47d4c49b34bcd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10088
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Diffstat (limited to 'tvix/store/src/nar/import.rs')
-rw-r--r--tvix/store/src/nar/import.rs4
1 files changed, 2 insertions, 2 deletions
diff --git a/tvix/store/src/nar/import.rs b/tvix/store/src/nar/import.rs
index a9a9cc12d8e1..000fc05663b2 100644
--- a/tvix/store/src/nar/import.rs
+++ b/tvix/store/src/nar/import.rs
@@ -1,5 +1,5 @@
 use std::{
-    io::{self, Read},
+    io::{self, BufRead},
     sync::Arc,
 };
 
@@ -21,7 +21,7 @@ use tvix_castore::{
 /// This function is not async (because the NAR reader is not)
 /// and calls [tokio::task::block_in_place] when interacting with backing
 /// services, so make sure to only call this with spawn_blocking.
-pub fn read_nar<R: Read + Send>(
+pub fn read_nar<R: BufRead + Send>(
     r: &mut R,
     blob_service: Arc<dyn BlobService>,
     directory_service: Arc<dyn DirectoryService>,