# Nix 2.29.0 released

**URL:** https://discourse.nixos.org/t/nix-2-29-0-released/64609
**Category:** Nix Releases
**Created:** [May 22, 2025, 12:56pm UTC](https://discourse.nixos.org/t/nix-2-29-0-released/64609 "2025-05-22T12:56:33Z")
**Posts on this page:** 1
**Showing post:** 1

<div class="post-metadata">

### Author: ![Mic92](https://discourse.nixos.org/user_avatar/discourse.nixos.org/mic92/32/5265_2.png) [@Mic92](https://discourse.nixos.org/u/Mic92)
#### Post date: [May 22, 2025, 12:56pm UTC](https://discourse.nixos.org/t/nix-2-29-0-released/64609/1 "2025-05-22T12:56:33Z")

</div>

Hi,

I’m pleased to announce the availability of Nix 2.29. It is available from [Channels for NixOS project(s)](https://releases.nixos.org/?prefix=nix/nix-2.29.0/)

## Release notes

# Release 2.29.0 (2025-05-14)

After the special backport-based release of Nix 2.28 (timed to coincide with Nixpkgs 25.05), the release process is back to normal with 2.29.  
As such, we have slightly more weeks of work from `master` (since 2.28 was branched from 2.27) than usual.  
This fact is counterbalanced by the fact that most of those changes are bug fixes rather than larger new features.

- Prettified JSON output on the terminal [#12555](https://github.com/NixOS/nix/issues/12555) [#12652](https://github.com/NixOS/nix/pull/12652)

- Repl: improve continuation prompt for incomplete expressions [#12846](https://github.com/NixOS/nix/pull/12846)

- REPL `:load-flake` and `:reload` now work together [#8753](https://github.com/NixOS/nix/issues/8753) [#13180](https://github.com/NixOS/nix/pull/13180)

- Increase retry delays on HTTP 429 Too Many Requests [#13052](https://github.com/NixOS/nix/pull/13052)

- S3: opt-in the STSProfileCredentialsProvider [#12646](https://github.com/NixOS/nix/pull/12646)

- Reduce connect timeout for http substituter [#12876](https://github.com/NixOS/nix/pull/12876)

- C API: functions for locking and loading a flake [#10435](https://github.com/NixOS/nix/issues/10435) [#12877](https://github.com/NixOS/nix/pull/12877) [#13098](https://github.com/NixOS/nix/pull/13098)

- No longer copy flakes that are in the nix store [#10435](https://github.com/NixOS/nix/issues/10435) [#12877](https://github.com/NixOS/nix/pull/12877) [#13098](https://github.com/NixOS/nix/pull/13098)

- Consistently preserve error messages from cached evaluation [#12762](https://github.com/NixOS/nix/issues/12762) [#12809](https://github.com/NixOS/nix/pull/12809)

- Faster blake3 hashing [#12676](https://github.com/NixOS/nix/pull/12676)

- Fix progress bar for S3 binary caches and make file transfers interruptible [#12877](https://github.com/NixOS/nix/issues/12877) [#13098](https://github.com/NixOS/nix/issues/13098) [#12538](https://github.com/NixOS/nix/pull/12538)

- Add host attribute of github/gitlab flakerefs to URL serialization [#12580](https://github.com/NixOS/nix/pull/12580)

- Multiple signatures support in store urls [#12976](https://github.com/NixOS/nix/pull/12976)

- nix flake show now skips over import-from-derivation [#4265](https://github.com/NixOS/nix/issues/4265) [#12583](https://github.com/NixOS/nix/pull/12583)

- Add `nix formatter build` and `nix formatter run` commands [#13063](https://github.com/NixOS/nix/pull/13063)

- Amend OSC 8 escape stripping for xterm-style separator [#13109](https://github.com/NixOS/nix/pull/13109)

# Contributors

This release was made possible by the following 40 contributors:

- Farid Zakaria [**(@fzakaria)**](https://github.com/fzakaria)
- The Tumultuous Unicorn Of Darkness [**(@TheTumultuousUnicornOfDarkness)**](https://github.com/TheTumultuousUnicornOfDarkness)
- Robert Hensing [**(@roberth)**](https://github.com/roberth)
- Félix [**(@picnoir)**](https://github.com/picnoir)
- Valentin Gagarin [**(@fricklerhandwerk)**](https://github.com/fricklerhandwerk)
- Eelco Dolstra [**(@edolstra)**](https://github.com/edolstra)
- Vincent Breitmoser [**(@Valodim)**](https://github.com/Valodim)
- Brian McKenna [**(@puffnfresh)**](https://github.com/puffnfresh)
- ulucs [**(@ulucs)**](https://github.com/ulucs)
- John Ericson [**(@Ericson2314)**](https://github.com/Ericson2314)
- Andrey Butirsky [**(@bam80)**](https://github.com/bam80)
- Dean De Leo [**(@whatsthecraic)**](https://github.com/whatsthecraic)
- Las Safin [**(@L-as)**](https://github.com/L-as)
- Sergei Zimmerman [**(@xokdvium)**](https://github.com/xokdvium)
- Shahar “Dawn” Or [**(@mightyiam)**](https://github.com/mightyiam)
- Ryan Hendrickson [**(@rhendric)**](https://github.com/rhendric)
- Rodney Lorrimar [**(@rvl)**](https://github.com/rvl)
- Erik Nygren [**(@Kirens)**](https://github.com/Kirens)
- Cole Helbling [**(@cole-h)**](https://github.com/cole-h)
- Martin Fischer [**(@not-my-profile)**](https://github.com/not-my-profile)
- Graham Christensen [**(@grahamc)**](https://github.com/grahamc)
- Vit Gottwald [**(@VitGottwald)**](https://github.com/VitGottwald)
- silvanshade [**(@silvanshade)**](https://github.com/silvanshade)
- Illia Bobyr [**(@ilya-bobyr)**](https://github.com/ilya-bobyr)
- Jeremy Fleischman [**(@jfly)**](https://github.com/jfly)
- Ruby Rose [**(@oldshensheep)**](https://github.com/oldshensheep)
- Sergei Trofimovich [**(@trofi)**](https://github.com/trofi)
- Tim [**(@Jaculabilis)**](https://github.com/Jaculabilis)
- Anthony Wang [**(@anthowan)**](https://github.com/anthowan)
- Jörg Thalheim [**(@Mic92)**](https://github.com/Mic92)
- Sandro [**(@SuperSandro2000)**](https://github.com/SuperSandro2000)
- tomberek [**(@tomberek)**](https://github.com/tomberek)
- Dmitry Bogatov [**(@KAction)**](https://github.com/KAction)
- Sizhe Zhao [**(@Prince213)**](https://github.com/Prince213)
- jade [**(@lf-)**](https://github.com/lf-)
- Pierre-Etienne Meunier [**(@P-E-Meunier)**](https://github.com/P-E-Meunier)
- Alexander Romanov [**(@ajlekcahdp4)**](https://github.com/ajlekcahdp4)
- Domagoj Mišković [**(@allrealmsoflife)**](https://github.com/allrealmsoflife)
- Thomas Miedema [**(@thomie)**](https://github.com/thomie)
- Yannik Sander [**(@ysndr)**](https://github.com/ysndr)
- Philipp Otterbein
- Dmitry Bogatov

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