nix-bitcoin/modules/operator.nix
Erik Arvstedt 27c45b82cc
modules: move options to the top
This greatly improves readability and makes it easier to discover options.

This commit was genereated by running the following script inside the
repo root dir:

#!/usr/bin/env ruby

def transform(src)
  return false if src.include?('inherit options;')

  success = false

  options = nil
  src.sub!(/^  options.*?^  }.*?;/m) do |match|
    options = match
    "  inherit options;"
  end
  return false if !options

  src.sub!(/^with lib;\s*let\n+/m) do |match|
    success = true
    <<~EOF
      with lib;
      let
      #{options}

    EOF
  end

  success
end

Dir['modules/**/*.nix'].each do |f|
  src = File.read(f)
  if transform(src)
    puts "Changed file #{f}"
    File.write(f, src)
  end
end
2021-09-13 13:41:47 +02:00

54 lines
1.5 KiB
Nix

# Define an operator user for convenient interactive access to nix-bitcoin
# features and services.
#
# When using nix-bitcoin as part of a larger system config, set
# `nix-bitcoin.operator.name` to your main user name.
{ config, lib, pkgs, ... }:
with lib;
let
options.nix-bitcoin.operator = {
enable = mkEnableOption "operator user";
name = mkOption {
type = types.str;
default = "operator";
description = "User name.";
};
groups = mkOption {
type = with types; listOf str;
default = [];
description = "Extra groups.";
};
allowRunAsUsers = mkOption {
type = with types; listOf str;
default = [];
description = "Users as which the operator is allowed to run commands.";
};
};
cfg = config.nix-bitcoin.operator;
in {
inherit options;
config = mkIf cfg.enable {
users.users.${cfg.name} = {
isNormalUser = true;
extraGroups = [
"systemd-journal"
"proc" # Enable full /proc access and systemd-status
] ++ cfg.groups;
};
security = mkIf (cfg.allowRunAsUsers != []) {
# Use doas instead of sudo if enabled
doas.extraConfig = mkIf config.security.doas.enable ''
${lib.concatMapStrings (user: "permit nopass ${cfg.name} as ${user}\n") cfg.allowRunAsUsers}
'';
sudo.extraConfig = mkIf (!config.security.doas.enable) ''
${cfg.name} ALL=(${builtins.concatStringsSep "," cfg.allowRunAsUsers}) NOPASSWD: ALL
'';
};
};
}