nixpkgs/nixos/modules/services/security/yubikey-agent.nix

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# Global configuration for yubikey-agent.
{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.services.yubikey-agent;
# reuse the pinentryFlavor option from the gnupg module
pinentryFlavor = config.programs.gnupg.agent.pinentryFlavor;
in
{
###### interface
meta.maintainers = with maintainers; [ philandstuff rawkode ];
options = {
services.yubikey-agent = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to start yubikey-agent when you log in. Also sets
SSH_AUTH_SOCK to point at yubikey-agent.
Note that yubikey-agent will use whatever pinentry is
specified in programs.gnupg.agent.pinentryFlavor.
'';
};
package = mkOption {
type = types.package;
default = pkgs.yubikey-agent;
defaultText = "pkgs.yubikey-agent";
description = ''
The package used for the yubikey-agent daemon.
'';
};
};
};
config = {
environment.systemPackages = [ cfg.package ];
systemd.packages = [ cfg.package ];
# This overrides the systemd user unit shipped with the
# yubikey-agent package
systemd.user.services.yubikey-agent = mkIf (pinentryFlavor != null) {
path = [ pkgs.pinentry.${pinentryFlavor} ];
};
environment.extraInit = optionalString cfg.enable
''
if [ -z "$SSH_AUTH_SOCK" -a -n "$XDG_RUNTIME_DIR" ]; then
export SSH_AUTH_SOCK="$XDG_RUNTIME_DIR/yubikey-agent/yubikey-agent.sock"
fi
'';
};
}