cachix: CppStdException "Exception: path '/nix/store/...' is not valid; type: nix::InvalidPath"

[samuela]

I'm seeing a weird error trying to use cachix-action.

/home/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh /home/runner/.nix-profile/bin/cachix ploop 
cachix: CppStdException "Exception: path '/nix/store/ab3yh7s8rms16b66jlbbzvjaif94ls93-python3.9-apache-beam-2.35.0' is not valid; type: nix::InvalidPath"
Error: Action failed with error: Error: The process '/home/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh' failed with exit code 1

Here's a link to the failed run: https://github.com/samuela/nixpkgs-upkeep/runs/4976168659?check_suite_focus=true.

Am I doing something wrong?

[samuela]

Just got the same thing on a different job:

cachix: CppStdException "Exception: path '/nix/store/qli5gyjqm0lizmxz2lqmybwgd3pvz1ji-tensorflow-gpu-2.7.0.drv.chroot' is not valid; type: nix::InvalidPath"
Error: Action failed with error: Error: The process '/home/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh' failed with exit code 1

Here's the run.

[samuela]

EDIT: in both of these cases I'm realizing that there were build errors in the job... My expectation was that nix would not leave partial file junk in /nix/store though?

[domenkozar]

0.7.0 should fix this, I'll update the official url.

[steveej]

i was wondering how to install cachix 0.7.0 using cachix/cachix-action@v10 today, and came up with the following solution:

- name: Setup cachix
  uses: cachix/cachix-action@v10
  with:
    (...)
    installCommand: |
      nix-env -if https://github.com/cachix/cachix/tarball/cachix-api-0.7.0 \
        --substituters 'https://cache.nixos.org https://cachix.cachix.org' \
        --trusted-public-keys 'cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY='

[steveej]

installing cachix 0.7 as shown above doesn't solve my instance of the issue.
error copied from this run:

Cachix: push
  /Users/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh /Users/runner/.nix-profile/bin/cachix holochain-ci 
  cachix: CppStdException "Exception: \ESC[31;1merror:\ESC[0m path '\ESC[35;1m/nix/store/9lyllc4w3il5kkkmfnla455min34yz7b-rust-overlay-b4532ea\ESC[0m' is not valid; type: nix::InvalidPath"
  Error: Action failed with error: Error: The process '/Users/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh' failed with exit code 1

[domenkozar]

I've released 0.7.0 and it should be the default, does that work now?

[austinbutler]

Tried again today with cachix-action@10, same issue.

[domenkozar]

I'll look into this.

[flokli]

I can also see this happening. I opened #111, which is related.

[runeksvendsen]

We're seeing this, too:

Post job cleanup.
Cachix: push
  /home/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh /home/runner/.nix-profile/bin/cachix adamatic-bridge 
  cachix: CppStdException "Exception: \ESC[31;1merror:\ESC[0m path '\ESC[35;1m/nix/store/w7wj6qd654qwq9595r28bp1b6vp3fvky-nodejs-14.18.1.drv.chroot\ESC[0m' is not valid; type: nix::InvalidPath"
  Error: Action failed with error: Error: The process '/home/runner/work/_actions/cachix/cachix-action/v10/dist/main/push-paths.sh' failed with exit code 1

EDIT: Using cachix-action@10
EDIT2: This happens only when the build itself fails (after which cachix-action runs and also fails)

[purefn]

Anyone know of a workaround for this issue? I'm running into it on a GitHub action that ends up building GHC. It eventually times out. Then it hits this error and so every build needs to rebuild GHC and ends up timing out and failing.

[domenkozar]

That's terrible experience. I'll prioritize this and look into it tomorrow!

[domenkozar]

To reproduce:

nix-build -E '(import <nixpkgs> {}).runCommand "foo" {} "sleep 999999999"'

Then in another terminal:

$ find /nix/store -maxdepth 1 -name *.drv.chroot
/nix/store/nz0ziflbx07n04szdhg0f60jk5givdla-foo.drv.chroot

And finally:

$ cachix push mycache /nix/store/nz0ziflbx07n04szdhg0f60jk5givdla-foo.drv.chroot
cachix: CppStdException e "\ESC[31;1merror:\ESC[0m path '\ESC[35;1m/nix/store/nz0ziflbx07n04szdhg0f60jk5givdla-foo.drv.chroot\ESC[0m' is not valid"(Just "nix::InvalidPath")
``

[domenkozar]

This is now fixed in cachix/cachix#410

I'll make a release and let you know once it hits the channels!

Thanks for reporting!

[samuela]

Thanks so much @domenkozar!

[steveej]

great news @domenkozar, thank you 🙌

[domenkozar]

I've released 0.7.1, once it reaches nixpkgs I'll publish it as official (hopefully in a few days).

[domenkozar]

Tracking at NixOS/nixpkgs#179211