feat(tvix/nix-compat): input_derivations with StorePaths r/7583

...in `Derivation`.

This is more type-safe and should consume less memory.

This also removes some allocations in the potentially hot path of output hash calculation.

https: //b.tvl.fyi/issues/264
Change-Id: I6ad7d3cb868dc9f750894d449a6065608ef06e8c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10957
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
Autosubmit: Peter Kolloch <info@eigenvalue.net>
Reviewed-by: Peter Kolloch <info@eigenvalue.net>

1 files changed, 2 insertions, 2 deletions

diff --git a/tvix/nix-compat/src/derivation/write.rs b/tvix/nix-compat/src/derivation/write.rs
index f3b16d9cf9..83106cd9e6 100644
--- a/tvix/nix-compat/src/derivation/write.rs
+++ b/tvix/nix-compat/src/derivation/write.rs
@@ -149,7 +149,7 @@ pub(crate) fn write_outputs(
 
 pub(crate) fn write_input_derivations(
     writer: &mut impl Write,
-    input_derivations: &BTreeMap<BString, &BTreeSet<String>>,
+    input_derivations: &BTreeMap<impl AtermWriteable, BTreeSet<String>>,
 ) -> Result<(), io::Error> {
     write_char(writer, BRACKET_OPEN)?;
 
@@ -159,7 +159,7 @@ pub(crate) fn write_input_derivations(
         }
 
         write_char(writer, PAREN_OPEN)?;
-        writer.write_all(input_derivation_aterm)?;
+        input_derivation_aterm.aterm_write(writer)?;
         write_char(writer, COMMA)?;
 
         write_char(writer, BRACKET_OPEN)?;