diff -r 836dac92eced -r 751216807683 lgen.lua
--- a/lgen.lua	Tue Jan 16 17:02:22 2018 +0000
+++ b/lgen.lua	Tue Jan 16 17:02:29 2018 +0000
@@ -5,6 +5,7 @@
 end
 
 -- Lua 5.1 setfenv/getfenv compatibility for Lua 5.2
+-- This is required by the "obsolete" ltp module
 local CE = require('compat_env')
 _G.setfenv = CE.setfenv
 _G.getfenv = CE.getfenv