nixUnstable: pre20220127 -> pre20220207

[NickCao]

Motivation for this change

fixes NixOS/nix#5985

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 22.05 Release Notes (or backporting 21.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[NickCao]

this breaks hydra-unstable due to recent changes.

[trofi]

Result of nixpkgs-review pr 158455 run on x86_64-linux 1

1 package failed to build:

• hydra-unstable

1 package built:

• nixVersions.unstable

[NickCao]

I did figure out a patch: NickCao@a89e608 , and have being running with it on my hydra for days without problems, still need someone familiar with hydra-eval-jobs to review it. Pinning nix to nixVersions.stable is not a viable fix as restricted evaluation is broken on nix 2.6.0.

[L-as]

Do note that this also fixes NixOS/nix#6036

[Artturin]

@ofborg build hydra-unstable

[NickCao]

I'm not in favor of blocking this indefinitely. as these bugs fixes are critical to our users. If nobody objects the hydra patch, shall we just merge this.

[Artturin]

Let's merge, please submit the patch upstream

[NickCao]

Let's merge, please submit the patch upstream

Shall I mark hydra-unstable as broken for now?

[Artturin]

Let's merge, please submit the patch upstream

Shall I mark hydra-unstable as broken for now?

No, I meant let's merge and submit the patch upstream

[Artturin]

It would be better to create a pr in the hydra repo and then fetchpatch and add a comment to the pr

[NickCao]

Currently hydra's policy is to support the stable version of nix, upstream pr has no where to target until hydra have a staging branch for us.

[NickCao]

Oops, that patch was a little bit out dated, I will submit a new one soon.