1 files changed, 12 insertions, 1 deletions
diff --git a/tvix/castore/src/digests.rs b/tvix/castore/src/digests.rs
index 2311c95c4ddc..4d919ff0d873 100644
--- a/tvix/castore/src/digests.rs
+++ b/tvix/castore/src/digests.rs
@@ -6,7 +6,7 @@ use thiserror::Error;
 pub struct B3Digest(Bytes);
 
 // TODO: allow converting these errors to crate::Error
-#[derive(Error, Debug)]
+#[derive(Error, Debug, PartialEq)]
 pub enum Error {
     #[error("invalid digest length: {0}")]
     InvalidDigestLen(usize),
@@ -26,6 +26,11 @@ impl From<B3Digest> for bytes::Bytes {
     }
 }
 
+impl From<blake3::Hash> for B3Digest {
+    fn from(value: blake3::Hash) -> Self {
+        Self(Bytes::copy_from_slice(value.as_bytes()))
+    }
+}
 impl From<digest::Output<blake3::Hasher>> for B3Digest {
     fn from(value: digest::Output<blake3::Hasher>) -> Self {
         let v = Into::<[u8; B3_LEN]>::into(value);
@@ -67,6 +72,12 @@ impl From<&[u8; B3_LEN]> for B3Digest {
     }
 }
 
+impl From<B3Digest> for [u8; B3_LEN] {
+    fn from(value: B3Digest) -> Self {
+        value.0.to_vec().try_into().unwrap()
+    }
+}
+
 impl Clone for B3Digest {
     fn clone(&self) -> Self {
         Self(self.0.to_owned())