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{ customUtils, flake, config, lib, ... }:
{
imports = with flake.nixosModules.systemProfiles; [ openssh ];
config = {
users.groups.nix-ssh-builder = {};
users.users.nix-ssh-builder = {
description = "Nix build server user";
useDefaultShell = true;
isSystemUser = true;
group = "nix-ssh-builder";
extraGroups = [ "ssh" ];
};
nix.settings.trusted-users = [ "nix-ssh-builder" ];
services.openssh = {
enable = true;
extraConfig = ''
Match User nix-ssh-builder
AllowAgentForwarding no
AllowTcpForwarding no
PermitTTY no
PermitTunnel no
X11Forwarding no
ForceCommand ${config.nix.package.out}/bin/nix-store --serve --write
Match All
'';
};
users.users.nix-ssh-builder.openssh.authorizedKeys.keys =
let
importKeys = dir: lib.attrValues (customUtils.mapFilterAttrs (_: v: v != null) (n: v: lib.nameValuePair n (if v == "directory" then importKeys' dir n else null)) (builtins.readDir dir));
importKeys' = dir: host: builtins.readFile (dir + "/${host}/public");
in importKeys ./clients;
};
}
|
