Plex on aarch64

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1

This PR makes the plex derivation leverage buildFHSUserEnv. As far as I can tell, buildFHSUserEnv is built to handle x86 and x86_64, but not other architectures. Trying to use Plex on aarch64 like this:

{ config, pkgs, lib, ... }:

let
  # ... other config elided ...
in {
  # ... other stanzas elided ...
  services.plex = {
    enable = true;
  };
}

… leads to this:

# nixos-rebuild switch
building Nix...
building the system configuration...
error: i686 Linux package set can only be used with the x86 family.
(use '--show-trace' to show detailed location information)

I’ve tried masking/overriding either pkgsi686Linux or buildFHSEnv like this:

{ config, pkgs, lib, ... }:

let
  # ...
  pkgsi686Linux = abort "fail on pkgsi686Linux";
  buildFHSEnv = abort "fail on buildFHSEnv";
in {
  # ... other stanzas elided ...
  services.plex = {
    enable = true;
  };
}

… in the hopes that I could actually define something like this (rather than just abort):

buildFHSEnv = args@{...}: buildFHSEnv (args // { multiPkgs = null; });

… to bypass the multi-arch logic, but it always seems to use the real/underlying implementation during the package installation (whether I just try to abort or actually define something that might do something useful). What am I doing wrong here? Should I be trying to redefine/wrap buildFHSEnv, or is there a better approach?

2

I ended up just using a Plex docker image instead:

  virtualisation.docker.enable = true;

  virtualisation.oci-containers.containers."plex" = {
    environment = {
      TZ = "America/Vancouver";
      PUID = toString config.users.users.plex.uid;
      PGID = toString config.users.groups.media.gid;
      PLEX_CLAIM = "claim-Sfksdf-U5_8_FSDfSDFy";
      VERSION = "latest";
    };
    extraOptions = [ "--network=host" ];
    image = "linuxserver/plex";
    volumes = [
      "/mnt/media/plex-config:/config"
      "/mnt/media:/media"
    ];
  };

This would probably be nice to sort out for other derivations that make use of buildFHSEnv; but alas, I haven’t hit any of those other cases on aarch64 yet.

3

Really, we should make it so that buildFHSUserEnv isn’t x86 specific, the underlying bubblewrap program and kernel features are usable outside of x86

2 Likes
4

Actually, I just made a PR to not bring in x86 only packages here: plex: allow use on non-x86 platforms by jonringer · Pull Request #132963 · NixOS/nixpkgs · GitHub

3 Likes
5

related as well? buildFHSUserEnvBubblewrap: generalize for non-x86_64 by ehmry · Pull Request #110303 · NixOS/nixpkgs · GitHub

6

Wow, that’s essentially what I wrote first, I guess I mis-typed is64bit as is64Bit

7

Can you tell me if any other solution besides docker is currently available?

8

services.plex.enable = true;

2 Likes
9

I’ve been trying to get services.plex.enable = true; to work, with the same error (error: i686 Linux package set can only be used with the x86 family.). Any pointers is appreciated.

I build with nixos-rebuild --flake '.#'

My flake.nix:

{
  outputs = { self, nixpkgs }: {
    nixosConfigurations.machine = nixpkgs.lib.nixosSystem {
      system = "aarch64-linux";
      modules = [ ./hosts/sombrero/configuration.nix ];
    };
  };
}

Pinning the nixpkgs in my flake.nix did not help

inputs = {
   nixpkgs.url = "github:nixos/nixpkgs/nixos-22.11";
 };

nix-repl> stdenv.hostPlatform.system
"aarch64-linux"

> nix-info -m
 - system: `"aarch64-linux"`
 - host os: `Linux 5.15.74, NixOS, 23.05 (Stoat), 23.05.20230106.b3818a4`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.12.0`
 - channels(alex): `""`
 - nixpkgs: `/nix/var/nix/profiles/per-user/root/channels/nixos`
10

@7NGmHwik I’m just pinning it to the last commit I found that isn’t broken e.g.

let 
  plex = fetchTarball {
    url = "https://github.com/NixOS/nixpkgs/archive/0874168639713f547c05947c76124f78441ea46c.tar.gz";
    sha256 = "0gw5l5bj3zcgxhp7ki1jafy6sl5nk4vr43hal94lhi15kg2vfmfy";
  };
in
{
  disabledModules = [
    "services/misc/plex.nix"
  ];

  imports = 
  [ 
    "${plex}/nixos/modules/services/misc/plex.nix"
  ];

  services.plex = {
    enable = true;
    package = (import plex {
      inherit system;
      config = { allowUnfree = true; };
    }).plex;
  };

}
1 Like