Failure with nix-installer v0.34.0

[adamcstephens]

nix-installer 0.33/0.34 have breaking changes how the installer handles nix.conf. I received the error below with devbox using nix-installer 0.34.

 Info: Ensuring packages are installed.
Error: error installing package github:NixOS/nixpkgs/5725cc2291aaf698287f36c67a003f20ff2515ac#beam.packages.erlang_27.elixir_1_17
source: nix: command error: nix --extra-experimental-features ca-derivations --option experimental-features 'nix-command flakes fetch-closure' path-info 'github:NixOS/nixpkgs/5725cc2291aaf698287f36c67a003f20ff2515ac#beam.packages.erlang_27.elixir_1_17' --json --impure: cannot open connection to remote store 'daemon': error: reading from file: Connection reset by peer: exit code 1
Error: There was an internal error. Run with DEVBOX_DEBUG=1 for a detailed error message, and consider reporting it at https://github.com/jetify-com/devbox/issues

Switching detsys/nix-installer-action directly and pinning nix-installer to source-tag: v0.32.3 resolved the issue. I have not had the chance to dig any further, but given that the problems caused by nix-installer 0.33 you'll want to start there.

DeterminateSystems/nix-installer#1389
DeterminateSystems/nix-installer#1390

[adamcstephens]

Actually, this may be related to the caching? I had an extra change in my update yesterday.

This succeeds:

- uses: DeterminateSystems/nix-installer-action@dea7810afd9d4c98556c8ec68cf361bd5b648eaa
  with:
    # pin installer version as v0.33 and v0.34 break our devbox setup
    source-tag: v0.32.3
    extra-conf: |
      experimental-features = ca-derivations fetch-closure flakes nix-command

- name: Setup devbox
  uses: jetify-com/devbox-install-action@v0.11.0
  with:
    enable-cache: false
    skip-nix-installation: true

This fails with the original error

- uses: DeterminateSystems/nix-installer-action@dea7810afd9d4c98556c8ec68cf361bd5b648eaa
  with:
    # pin installer version as v0.33 and v0.34 break our devbox setup
    source-tag: v0.32.3
    extra-conf: |
      experimental-features = ca-derivations fetch-closure flakes nix-command

- name: Setup devbox
  uses: jetify-com/devbox-install-action@v0.11.0
  with:
    enable-cache: true
    skip-nix-installation: true

[LucilleH]

@adamcstephens ah this caching find is super helpful. I'll take a look 👍

[adamcstephens]

Yeah, I'm now wondering if this is actually an issue with our cache and not the installer at all?

[adamcstephens]

Thanks!