Cachix action v14 + v13 failing since Jan 15

[ryanswrt]

On 15 Jan my existing cachix action setup failed with

Post job cleanup.
Cachix: push
  /home/runner/work/_actions/cachix/cachix-action/v13/dist/main/push-paths.sh cachix  REDACTED  REDACTED
  /home/runner/work/_actions/cachix/cachix-action/v13/dist/main/push-paths.sh: line 14: cachix: command not found
  Error: Action failed with error: Error: The process '/home/runner/work/_actions/cachix/cachix-action/v13/dist/main/push-paths.sh' failed with exit code 127

I tried updating the cachix and install-nix actions to the latest version, however it still seems to fail with some kind of issue in the cachix binary.

Post job cleanup.
Cachix: push
  [2024-01-17 03:48:27][Info] Starting Cachix Daemon
  [2024-01-17 03:48:27][Info] Configuration:
  PID: 2823
  Socket: /home/runner/work/_temp/cachix-daemon-2o0Jvh/daemon.sock
  Workers: 8
  Cache name: REDACTED
  Cache URI: REDACTED
  Cache public keys: [PUBLIC KEY HERE]
  Cache is public: False
  Compression: ZSTD
  Error: Action failed with error: Error: Unable to locate executable file: /home/runner/.nix-profile/bin/cachix. Please verify either the file path exists or the file can be found within a directory specified by the PATH environment variable. Also check the file mode to verify the file is executable.

I am using magic-nix-cache too so that i get github-local caches for a bit of increased speed, don't know if that is interfering somehow

[domenkozar]

Smells like #144 again.

[sandydoo]

@ryanswrt, does your workflow have any nix profile installs?

Nix seems to be nuking the existing nix-env profile when converting it. Still looking into why this is happening.

[sandydoo]

We're deploying a fix to https://cachix.org/api/v1/install.

The action uses nix-env to install cachix. This keeps us compatible with both nix-env and nix profile workflows. Unfortunately, there are some subtle differences in how these two commands handle derivations with multiple outputs, e.g. $out and $bin. nix-env handles this by installing both outputs, but nix profile ignores the $bin output when migrating the profile. We had a workaround for this that was recently removed.

[sandydoo]

We've updated the derivations served by https://cachix.org/api/v1/install and https://cachix.org/api/v1/install/v1.7 to work around the issue with nix profile. This should now be fixed. Thank you!