Nix 2.10.0 released

Announcements Nix Releases
1

Hi,

I’m pleased to announce the availability of Nix 2.10.0. It will be available from Download Nix / NixOS | Nix & NixOS and http://releases.nixos.org/?prefix=nix/nix-2.10.0/.

Here are the release notes:

  • nix repl now takes installables on the command line, unifying the usage with other commands that use --file and --expr. Primary breaking change is for the common usage of nix repl '<nixpkgs>' which can be recovered with nix repl --file '<nixpkgs>' or nix repl --expr 'import <nixpkgs>{}'.

    This is currently guarded by the repl-flake experimental feature.

  • A new function builtins.traceVerbose is available. It is similar to builtins.trace if the trace-verbose setting is set to true, and it is a no-op otherwise.

  • nix search has a new flag --exclude to filter out packages.

  • On Linux, if /nix doesn’t exist and cannot be created and you’re not running as root, Nix will automatically use ~/.local/share/nix/root as a chroot store. This enables non-root users to download the statically linked Nix binary and have it work out of the box, e.g.

    # ~/nix run nixpkgs#hello
warning: '/nix' does not exists, so Nix will use '/home/ubuntu/.local/share/nix/root' as a chroot store
Hello, world!

  • flake-registry.json is now fetched from channels.nixos.org.

  • Nix can now be built with LTO by passing --enable-lto to configure. LTO is currently only supported when building with GCC.

30 Likes
3

Maybe you meant to name this builtins.traceIfVerbose?

4 Likes
4

Can't install Nix package manager on Ubuntu WSL2 · Issue #6790 · NixOS/nix · GitHub is making me think that something (the no-root-nix code?) is causing trouble during single-user installs.

5

Is there a way to upgrade to 2.10.0. I’ve tried Upgrading Nix - Nix Reference Manual, but I’m stuck on 2.9.1.

6

Those upgrade instructions don’t do anything until nixpkgs is updated. Currently it’s still on 2.9.1.

In the meantime, if you’re on x86_64-linux, you can do

# nix-env -i /nix/store/5kdlfa4clss463zpf6wr6wnva1fczpfz-nix-2.10.1

and on x86_64-darwin:

# nix-env -i /nix/store/xs2priyrwwv92296n1x1dgav4h3si6ki-nix-2.10.1

Or if you’re using flakes and the new nix profile command:

# nix profile install nix/2.10.1
3 Likes
7

Those look suspiciously wrong for something with a version of 2.10.1 :wink:

1 Like
8

Oops, yes. I’ve fixed them!

2 Likes
9

Note that the “auto-chroot-store” stuff also appears to break the building of lazy-options.json on nixpkgs-unstable.
https://github.com/NixOS/nix/issues/6732

10

I made a script to automate the upgrade — https://github.com/steshaw/shelly/blob/0382ea43feb008c618fa25e045cfe59b64112708/scripts/nix-upgrade. Tested on macOS and Linux+Nix multi-user.

11

https://hydra.nixos.org/eval/1771620#tabs-now-fail

amazonImage, proxmoxImage and ova are broken. Bisecting led me to the commit bumping nix stable to 2.10
https://github.com/nixos/nixpkgs/commit/f5330a5b6a739df2f9f8589a5eeb75e86aa526a4

the build logs don’t give much information

[illustris@desktop:~/src/nixpkgs]$ nix log /nix/store/lcgcqarfkmpc85gw5h4mpss9kxyi7mqy-nixos-ova-22.11pre56789.gfedcba-x86_64-linux.drv
warning: '/nix' does not exist, so Nix will use '/build/.local/share/nix/root' as a chroot store
running nixos-install...
copying channel...
error: build of '/nix/store/csn2jpg8c9iv5xx892n4j51in82d47jy-nixos-22.11pre56789.gfedcba' failed

/build/.local/share/nix/root/nix/store/ only has an empty .links folder.

The first breaking commit of nix is Automatically use a chroot store if /nix doesn't exist · NixOS/nix@2a9fddc · GitHub

EDIT: seems to be fixed in 2.10.3

1 Like