Apply suggestions from code review

Co-authored-by: Sandro <sandro.jaeckel@gmail.com>

pkgs/applications/editors/vis/default.nix

@@ -4,7 +4,7 @@
 }:
 
 let
-  luaEnv = lua.withPackages(ps: [ps.lpeg]);
+  luaEnv = lua.withPackages(ps: [ ps.lpeg ]);
 in
 stdenv.mkDerivation rec {
   pname = "vis";

pkgs/development/interpreters/lua-5/interpreter.nix

@@ -12,7 +12,8 @@
 }:
 let
   luaPackages = callPackage ../../lua-modules {
-    lua=self; overrides=packageOverrides;
+    lua = self;
+    overrides = packageOverrides;
   };
 
 plat = if stdenv.isLinux then "linux"

pkgs/development/lua-modules/lib.nix

@@ -55,7 +55,7 @@ rec {
   toLuaModule = drv:
     drv.overrideAttrs( oldAttrs: {
       # Use passthru in order to prevent rebuilds when possible.
-      passthru = (oldAttrs.passthru or {})// {
+      passthru = (oldAttrs.passthru or {}) // {
         luaModule = lua;
         requiredLuaModules = requiredLuaModules drv.propagatedBuildInputs;
       };

pkgs/servers/xmpp/prosody/default.nix

@@ -2,7 +2,7 @@
 , lua
 , nixosTests
 , withLibevent ? true
-, withDBI ? true, luadbi ? null
+, withDBI ? true
 # use withExtraLibs to add additional dependencies of community modules
 , withExtraLibs ? [ ]
 , withOnlyInstalledCommunityModules ? [ ]
@@ -12,7 +12,7 @@ with lib;
 
 
 let
-  luaEnv = lua.withPackages(p: with p;[
+  luaEnv = lua.withPackages(p: with p; [
       luasocket luasec luaexpat luafilesystem luabitop luadbi-sqlite3
     ]
     ++ lib.optional withLibevent p.luaevent

pkgs/top-level/lua-packages.nix

@@ -107,7 +107,7 @@ in
     };
   };
 
-  vicious = toLuaModule( stdenv.mkDerivation rec {
+  vicious = luaLib.toLuaModule( stdenv.mkDerivation rec {
     pname = "vicious";
     version = "2.5.0";