Subject: Re: What's cooking in git.git (Feb 2026, #03)

From: Junio C Hamano <[email-masked]>
Date: Sun, 08 Feb 2026 16:55:51 -0800

"brian m. carlson" <[email-masked]> writes:

> On 2026-02-07 at 23:15:51, Junio C Hamano wrote:
>> * bc/sha1-256-interop-02 (2025-11-17) 15 commits
>>  - object-file-convert: always make sure object ID algo is valid
>>  - rust: add a small wrapper around the hashfile code
>>  - rust: add a new binary object map format
>>  - rust: add functionality to hash an object
>>  - rust: add a build.rs script for tests
>>  - hash: expose hash context functions to Rust
>>  - write-or-die: add an fsync component for the object map
>>  - csum-file: define hashwrite's count as a uint32_t
>>  - rust: add additional helpers for ObjectID
>>  - hash: add a function to look up hash algo structs
>>  - rust: add a hash algorithm abstraction
>>  - rust: add a ObjectID struct
>>  - hash: use uint32_t for object_id algorithm
>>  - conversion: don't crash when no destination algo
>>  - repository: require Rust support for interoperability
>> 
>>  The code to maintain mapping between object names in multiple hash
>>  functions is being added, written in Rust.
>> 
>>  Any progress on CI breakages???
>>  source: <[email-masked]>
>
> I just sent v3 yesterday which fixes the CI breakages.

Yup, I replaced the topic with the latest one, and the draft for the
next issue of "What's cooking" has this entry updated already.

Thanks.

* bc/sha1-256-interop-02 (2026-02-07) 16 commits
 - object-file-convert: always make sure object ID algo is valid
 - rust: add a small wrapper around the hashfile code
 - rust: add a new binary object map format
 - rust: add functionality to hash an object
 - rust: add a build.rs script for tests
 - rust: fix linking binaries with cargo
 - hash: expose hash context functions to Rust
 - write-or-die: add an fsync component for the object map
 - csum-file: define hashwrite's count as a uint32_t
 - rust: add additional helpers for ObjectID
 - hash: add a function to look up hash algo structs
 - rust: add a hash algorithm abstraction
 - rust: add a ObjectID struct
 - hash: use uint32_t for object_id algorithm
 - conversion: don't crash when no destination algo
 - repository: require Rust support for interoperability

 The code to maintain mapping between object names in multiple hash
 functions is being added, written in Rust.

 Comments?  v1 saw a lot of discussions, v2 didn't, and this is v3,
 which is essentially identical to v2 with CI fixes (which work!).
 source: <[email-masked]>