78 lines
2.2 KiB
Nix
78 lines
2.2 KiB
Nix
# Configuration for the Name Service Switch (/etc/nsswitch.conf).
|
|
|
|
{ config, pkgs, ... }:
|
|
|
|
with pkgs.lib;
|
|
|
|
let
|
|
|
|
options = {
|
|
|
|
# NSS modules. Hacky!
|
|
system.nssModules = mkOption {
|
|
internal = true;
|
|
default = [];
|
|
description = "
|
|
Search path for NSS (Name Service Switch) modules. This allows
|
|
several DNS resolution methods to be specified via
|
|
<filename>/etc/nsswitch.conf</filename>.
|
|
";
|
|
merge = mergeListOption;
|
|
apply = list:
|
|
let
|
|
list2 =
|
|
list
|
|
# !!! this should be in the LDAP module
|
|
++ optional config.users.ldap.enable pkgs.nss_ldap;
|
|
in {
|
|
list = list2;
|
|
path = makeLibraryPath list2;
|
|
};
|
|
};
|
|
|
|
};
|
|
|
|
inherit (config.services.avahi) nssmdns;
|
|
|
|
in
|
|
|
|
{
|
|
require = [ options ];
|
|
|
|
environment.etc =
|
|
[ # Name Service Switch configuration file. Required by the C library.
|
|
# !!! Factor out the mdns stuff. The avahi module should define
|
|
# an option used by this module.
|
|
{ source = pkgs.writeText "nsswitch.conf"
|
|
''
|
|
passwd: files ldap
|
|
group: files ldap
|
|
shadow: files ldap
|
|
hosts: files ${optionalString nssmdns "mdns_minimal [NOTFOUND=return]"} dns ${optionalString nssmdns "mdns"} myhostname
|
|
networks: files dns
|
|
ethers: files
|
|
services: files
|
|
protocols: files
|
|
'';
|
|
target = "nsswitch.conf";
|
|
}
|
|
];
|
|
|
|
# Use nss-myhostname to ensure that our hostname always resolves to
|
|
# a valid IP address. It returns all locally configured IP
|
|
# addresses, or ::1 and 127.0.0.2 as fallbacks.
|
|
system.nssModules = [ pkgs.nss_myhostname ];
|
|
|
|
environment.shellInit =
|
|
if config.system.nssModules.path != "" then
|
|
''
|
|
LD_LIBRARY_PATH=${config.system.nssModules.path}:$LD_LIBRARY_PATH
|
|
''
|
|
else "";
|
|
|
|
# NSS modules need to be in `systemPath' so that (i) the builder
|
|
# chroot gets to seem them, and (ii) applications can benefit from
|
|
# changes in the list of NSS modules at run-time, without requiring
|
|
# a reboot.
|
|
environment.systemPackages = [ config.system.nssModules.list ];
|
|
}
|