Xenial support

[kvz]

Hey there, thanks a lot for this project!

I'm currently running into this issue:

TASK [/srv/current/core/node_modules/frey/roles/nix/v1.0.1 : Download Nix] *****
fatal: [54.209.132.103]: FAILED! => {"failed": true, "msg": "'dict object' has no attribute u'xenial'"}
fatal: [52.91.125.180]: FAILED! => {"failed": true, "msg": "'dict object' has no attribute u'xenial'"}
fatal: [54.162.210.238]: FAILED! => {"failed": true, "msg": "'dict object' has no attribute u'xenial'"}

Are there any plans of supporting Ubuntu's latest LTS?

Kind regards,
Kevin

[ktosiek]

Not from me, as I'm not using this role anymore.
I'll be glad to review a PR, it should be enough to add the right URLs to nix_package_urls here: https://github.com/ktosiek/ansible-nix/blob/master/defaults/main.yml#L6

Actually it wouldn't hurt to bump the nix version too, as this role is still using 1.8 and the current one is 1.11

[kvz]

Thanks, I looked into it but it seems there are no official debs for it (NixOS/nix#891 (comment)). This would mean falling back to the install script but I'm hesitant to put such moving parts into a role.

[ktosiek]

Using the script is not that bad, but you'll still need to setup multi-user if you want it. You can copy a specific version of the install script into a role if you want to control that :-)

The package is basically just bootstraping + some config anyway, as you'll probably be using nix-managed nix soon after installing the package. And without setting up multi-user, the Nix from .deb can only be used by root.

[kvz]

If anyone wants to submit a PR for this, I just got a link to this deb http://hydra.nixos.org/job/nix/maintenance/deb_ubuntu1604x86_64/latest in NixOS/nix#891 (comment) (I personally don't have the time currently)

[mstone]

FWIW, I solved this problem by pinning my desired nix version, building the necessary debs from source using a nixexpr like this one so that I didn't have to pay any further attention to the state of which job outputs Hydra has or has not cached:

with import <nixpkgs> {};
let
  nix = fetchFromGitHub {
    owner = "nixos";
    repo = "nix";
    rev = "1.11.8";
    sha256 = "1qlddlzkpavhsrb7h3cyqhif5qc2qhkhjwnv4pbzg9hamqbd45wc";
  };
in
  (import "${nix}/release.nix" {
    officialRelease = true;
  }).deb_ubuntu1404x86_64

and then adapting the first task in ktosiek's ansible-nix role to use the copy module instead of the get_url module that it uses today.

(NB: for Xenial debs, you would presumably need to replace "deb_ubuntu1404x86_64" with, e.g., "deb_ubuntu1604x86_64")