From 98bc5991db76171ae9e1631b66f41061420624db Mon Sep 17 00:00:00 2001
From: tv <tv@shackspace.de>
Date: Sun, 26 Jul 2015 21:04:13 +0200
Subject: 3 krebs: make dns.providers part of api

---
 4lib/krebs/tree.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)
 create mode 100644 4lib/krebs/tree.nix

(limited to '4lib/krebs/tree.nix')

diff --git a/4lib/krebs/tree.nix b/4lib/krebs/tree.nix
new file mode 100644
index 00000000..1cd83b3f
--- /dev/null
+++ b/4lib/krebs/tree.nix
@@ -0,0 +1,13 @@
+{ lib, ... }:
+
+with lib;
+
+rec {
+  # tree k v = set k (either v (tree k v))
+
+  # get : [k] -> tree k v -> v
+  get = path: tree:
+    if length path > 0
+      then get (tail path) tree.${head path} # TODO check if elem exists
+      else tree;
+}
-- 
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