Cleanup todo

TODO.md

@@ -22,14 +22,10 @@
   - Surely the compiler should build data blocks
   - Also put the struct.pack constants in TYPE_INFO_MAP
 - Make prelude more an actual thing
-  - Merge in compiler.INSTANCES
   - Make it less build in - have a environment class of some kind
+  - instance_type_class should probably be part of this environment
 - Implemented Bounded: https://hackage.haskell.org/package/base-4.21.0.0/docs/Prelude.html#t:Bounded
 - Try to implement the min and max functions using select
 - Filter out methods that aren't used; other the other way around (easier?) only add __ methods when needed
-- Move foldr into type class methods
-  - Functions don't seem to be a thing on typing level yet?
-  - Related to the FIXME in phasm_type3?
-  - Type constuctor should also be able to constuct placeholders - somehow.
 
 - Read https://bytecodealliance.org/articles/multi-value-all-the-wasm

phasm/type3/entry.py

@@ -112,7 +112,6 @@ def phasm_type3(inp: ourlang.Module, verbose: bool = False) -> None:
     if error_list:
         raise Type3Exception(error_list)
 
-    # FIXME: This doesn't work with e.g. `:: [a] -> a`, as the placeholder is inside a type
     for plh, typ in placeholder_substitutes.items():
         for expr in plh.update_on_substitution:
             expr.type3 = typ