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feat(tvix/nix-compat): Add nix serialization support

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This change implements the serialization part that is needed to
implement the nix daemon protocol. Previously was add deserialization
and derivers for that and this then adds the other part of that equation
so that you can write types that can then be read using deserialization.

Change-Id: I2917de634980a93822a4f5a8ad38897b9ce16d89
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12729
Autosubmit: Brian Olsen <me@griff.name>
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI
This commit is contained in:
Brian Olsen 2024-11-03 20:42:01 +01:00 • committed by clbot
parent 6582fa69f1
commit b88579ade4
20 changed files with 2339 additions and 15 deletions
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2
tvix/nix-compat/src/wire/bytes/mod.rs
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@ -181,7 +181,7 @@ pub async fn write_bytes<W: AsyncWriteExt + Unpin, B: AsRef<[u8]>>(
/// Computes the number of bytes we should add to len (a length in
/// bytes) to be aligned on 64 bits (8 bytes).
fn padding_len(len: u64) -> u8 {
pub(crate) fn padding_len(len: u64) -> u8 {
let aligned = len.wrapping_add(7) & !7;
aligned.wrapping_sub(len) as u8
}