From 11cd761dbf3e1e842b809a16b7b3f5d660835fce Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Fri, 15 Feb 2019 19:22:14 +0100
Subject: nixos/nsswitch: add option to configure nssHosts

Enables adding or overriding the default nsswitch hosts in a generic
way for packages without a nixos module.
---
 nixos/modules/config/nsswitch.nix | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

(limited to 'nixos/modules/config/nsswitch.nix')

diff --git a/nixos/modules/config/nsswitch.nix b/nixos/modules/config/nsswitch.nix
index b601e908e49f..13277fe56e42 100644
--- a/nixos/modules/config/nsswitch.nix
+++ b/nixos/modules/config/nsswitch.nix
@@ -61,6 +61,15 @@ in {
         };
     };
 
+    system.nssHosts = mkOption {
+      type = types.listOf types.str;
+      default = [];
+      example = [ "mdns" ];
+      description = ''
+        List of host entries to configure in <filename>/etc/nsswitch.conf</filename>.
+      '';
+    };
+
   };
 
   config = {
@@ -85,7 +94,7 @@ in {
       group:     ${concatStringsSep " " passwdArray}
       shadow:    ${concatStringsSep " " shadowArray}
 
-      hosts:     ${concatStringsSep " " hostArray}
+      hosts:     ${concatStringsSep " " config.system.nssHosts}
       networks:  files
 
       ethers:    files
@@ -94,6 +103,8 @@ in {
       rpc:       files
     '';
 
+    system.nssHosts = hostArray;
+
     # Systemd provides 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
-- 
cgit 1.4.1