Format .nix files

... with nixfmt (rfc style)

tests/functional/lang/eval-okay-patterns.nix

@@ -1,16 +1,59 @@
 let
 
-  f = args@{x, y, z}: x + args.y + z;
+  f =
+    args@{
+      x,
+      y,
+      z,
+    }:
+    x + args.y + z;
 
-  g = {x, y, z}@args: f args;
+  g =
+    {
+      x,
+      y,
+      z,
+    }@args:
+    f args;
 
-  h = {x ? "d", y ? x, z ? args.x}@args: x + y + z;
+  h =
+    {
+      x ? "d",
+      y ? x,
+      z ? args.x,
+    }@args:
+    x + y + z;
 
-  j = {x, y, z, ...}: x + y + z;
+  j =
+    {
+      x,
+      y,
+      z,
+      ...
+    }:
+    x + y + z;
 
 in
-  f {x = "a"; y = "b"; z = "c";} +
-  g {x = "x"; y = "y"; z = "z";} +
-  h {x = "D";} +
-  h {x = "D"; y = "E"; z = "F";} +
-  j {x = "i"; y = "j"; z = "k"; bla = "bla"; foo = "bar";}
+f {
+  x = "a";
+  y = "b";
+  z = "c";
+}
++ g {
+  x = "x";
+  y = "y";
+  z = "z";
+}
++ h { x = "D"; }
++ h {
+  x = "D";
+  y = "E";
+  z = "F";
+}
++ j {
+  x = "i";
+  y = "j";
+  z = "k";
+  bla = "bla";
+  foo = "bar";
+}