From 394590c4b35edbfbb5a503923fed0c8cbb382410 Mon Sep 17 00:00:00 2001
From: tv <tv@krebsco.de>
Date: Tue, 12 Jun 2018 20:08:24 +0200
Subject: import writers from stockholm 0bc2409

---
 lib/default.nix | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 lib/default.nix

(limited to 'lib/default.nix')

diff --git a/lib/default.nix b/lib/default.nix
new file mode 100644
index 0000000..01d43f7
--- /dev/null
+++ b/lib/default.nix
@@ -0,0 +1,24 @@
+let {
+  body = lib;
+
+  lib = nixpkgs.lib // builtins // (with lib; {
+    genAttrs' = names: f: listToAttrs (map f names);
+    getAttrs = names: set:
+      listToAttrs (map (name: nameValuePair name set.${name})
+                       (filter (flip hasAttr set) names));
+    toC = x: let
+      type = typeOf x;
+      reject = throw "cannot convert ${type}";
+    in {
+      list = "{ ${concatStringsSep ", " (map toC x)} }";
+      null = "NULL";
+      set = if isDerivation x then toJSON x else reject;
+      string = toJSON x; # close enough
+    }.${type} or reject;
+    test = re: x: isString x && testString re x;
+    testString = re: x: match re x != null;
+    types = nixpkgs.lib.types // import ./types.nix { lib = body; };
+  });
+
+  nixpkgs.lib = import <nixpkgs/lib>;
+}
-- 
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