Merge pull request #40 from gvolpe/fix/negative-number-in-tuple

Tuples: Wrap negative number (Double) in parens

data/negative.settings

@@ -0,0 +1,2 @@
+[org/gnome/settings-daemon/plugins/color]
+night-light-last-coordinates=(43.684199280057591, -79.347200000000001)

output/negative.nix

@@ -0,0 +1,14 @@
+# Generated via dconf2nix: https://github.com/gvolpe/dconf2nix
+{ lib, ... }:
+
+let
+  mkTuple = lib.hm.gvariant.mkTuple;
+in
+{
+  dconf.settings = {
+    "org/gnome/settings-daemon/plugins/color" = {
+      night-light-last-coordinates = mkTuple [ 43.68419928005759 (-79.3472) ];
+    };
+
+  };
+}

src/Nix.hs

@@ -58,11 +58,12 @@ renderValue raw = Nix $ renderValue' raw <> ";"
   renderValue' (I32 v) = "\"uint32 " <> T.pack (show v) <> "\""
   renderValue' (I64 v) = "\"int64 " <> T.pack (show v) <> "\""
   renderValue' (T x y) =
-    let wrapInt x | x < 0     = "(" <> T.pack (show x) <> ")"
-                  | otherwise = T.pack $ show x
+    let wrapNegNumber x | x < 0     = "(" <> T.pack (show x) <> ")"
+                        | otherwise = T.pack $ show x
+        mkTuple x' y' =  "mkTuple [ " <> wrapNegNumber x' <> " " <> wrapNegNumber y' <> " ]"
     in  case (x, y) of
-          (I x', I y') ->
-            "mkTuple [ " <> wrapInt x' <> " " <> wrapInt y' <> " ]"
+          (I x', I y') -> mkTuple x' y'
+          (D x', D y') -> mkTuple x' y'
           _ -> "mkTuple [ " <> renderValue' x <> " " <> renderValue' y <> " ]"
   renderValue' (TL x y) = "(" <> renderValue' (T x y) <> ")"
   renderValue' (L xs) =