I'm not a modder, but I figured this out for myself. I added this to the end of the recipe lua.
{
type = "recipe",
name = "scrap landfill",
energy_required = 0.5,
enabled = true,
category = "crafting",
ingredients =
{
{"scraps", 50}
},
result= "landfill",
result_count = 1
}
It seems to work fine for me. Thanks for the mod :)