nixos/gdm: autologin unlocks keyring when possible

      gdm-autologin.text = ''

        auth      requisite     pam_nologin.so

        auth      required      pam_succeed_if.so uid >= 1000 quiet

        ${lib.optionalString pamCfg.login.enableGnomeKeyring ''

          auth       [success=ok default=1]      ${pkgs.gnome.gdm}/lib/security/pam_gdm.so

          auth       optional                    ${pkgs.gnome-keyring}/lib/security/pam_gnome_keyring.so

        ''}

        auth      required      pam_permit.so

        account   sufficient    pam_unix.so