cleanup whitespace and commas

* [] is now [ ]
* {} is now { }
* commas in arglists go at end of line not beginning

In short, I ran the whole thing through nixfmt-rfc-style but only
accepted about 30% of its changes. I might grow accustomed to more
of it over time

pkgs/ifwait/default.nix

@@ -1,9 +1,15 @@
-{ netlink-lua
-, writeFennelScript
-, runCommand
-, anoia
+{
+  netlink-lua,
+  writeFennelScript,
+  runCommand,
+  anoia,
 }:
-runCommand "ifwait" {} ''
+runCommand "ifwait" { } ''
   mkdir -p $out/bin
-  cp -p ${writeFennelScript "ifwait" [anoia netlink-lua] ./ifwait.fnl} $out/bin/ifwait
+  cp -p ${
+    writeFennelScript "ifwait" [
+      anoia
+      netlink-lua
+    ] ./ifwait.fnl
+  } $out/bin/ifwait
 ''