diff --git a/aiocraft/mc/__init__.py b/aiocraft/mc/__init__.py
index 97b3e0c..8c30523 100644
--- a/aiocraft/mc/__init__.py
+++ b/aiocraft/mc/__init__.py
@@ -1,4 +1,4 @@
 """Minecraft definitions"""
 from .packet import Packet
 from .mctypes import *
-from .protocol import *
+from .proto import *
diff --git a/aiocraft/mc/compiler.py b/aiocraft/mc/compiler.py
deleted file mode 100755
index b9d344f..0000000
--- a/aiocraft/mc/compiler.py
+++ /dev/null
@@ -1,124 +0,0 @@
-#!/usr/bin/env python
-import os
-import json
-import keyword
-
-from typing import List, Dict
-
-from mctypes import *
-
-DIR_MAP = {"toClient": "clientbound", "toServer": "serverbound"}
-PREFACE = """\"\"\"[!] This file is autogenerated\"\"\"\n\n"""
-IMPORTS = """from typing import Tuple
-from ....packet import Packet
-from ....mctypes import *\n"""
-IMPORT_ALL = """__all__ = [\n\t{all}\n]\n"""
-OBJECT = """
-class {name}(Packet):
-	id : int = 0x{id:X}
-	_slots : Tuple[Tuple[str, Type]] = (
-		{slots}
-	)
-	{fields}
-"""
-
-TYPE_MAP = {
-	"varint": VarInt,
-	"u8": UnsignedShort,
-	"u16": UnsignedInt,
-	"u32": UnsignedLong,
-	"i16": Short,
-	"i32": Int,
-	"i64": Long,
-	"f32": Float,
-	"f64": Double,
-	"bool": Boolean,
-	"UUID": UUID,
-	"string": String,
-	"nbt": NBTTag,
-	"slot": Slot,
-	"position": Position,
-	"entityMetadataItem": EntityMetadataItem,
-	"entityMetadata": EntityMetadata,
-}
-
-def mctype(name:str) -> Type:
-	if not isinstance(name, str):
-		return String # should return TrailingByteArray but still haven't implemented it (:
-	if name in TYPE_MAP:
-		return TYPE_MAP[name]
-	return String # should return TrailingByteArray but still haven't implemented it (:
-
-def snake_to_camel(name:str) -> str:
-	return "".join(x.capitalize() for x in name.split("_"))
-
-def parse_slot(slot: dict) -> str:
-	name = slot["name"] if "name" in slot else "anon"
-	if keyword.iskeyword(name):
-		name = "is_" + name
-	t = mctype(slot["type"] if "type" in slot else "restBuffer")
-	return f"(\"{name}\", {t.__name__})"
-
-def parse_field(slot: dict) -> str:
-	name = slot["name"] if "name" in slot else "anon"
-	if keyword.iskeyword(name):
-		name = "is_" + name
-	t = mctype(slot["type"] if "type" in slot else "restBuffer")
-	return f"{name} : {t._pytype.__name__}"
-
-class PacketClassWriter:
-	pid   : int
-	title : str
-	slots : List[Dict[str, str]]
-
-	def __init__(self, pid:int, title:str, slots:List[Dict[str, str]]):
-		self.pid = pid
-		self.title = title
-		self.slots = slots
-
-	def compile(self) -> str:
-		return PREFACE + \
-			IMPORTS + \
-			OBJECT.format(
-				id=pid, 
-				name=self.title, 
-				slots=",\n\t\t".join(parse_slot(slot) for slot in self.slots),
-				fields="\n\t".join(parse_field(slot) for slot in self.slots),
-			)
-
-def _make_module(path:str, contents:dict):
-	os.mkdir(path)
-	if not path.endswith("/"):
-		path += "/"
-	imports = ""
-	for key in contents:
-		imports += f"from .{key} import {contents[key]}\n"
-	with open(path + "__init__.py", "w") as f:
-		f.write(PREFACE + imports)
-
-if __name__ == "__main__":
-	# TODO load relatively!
-	with open("/home/alemi/projects/minecraft-data/data/pc/1.12.2/protocol.json") as f:
-		data = json.load(f)
-
-	# TODO get the `minecraft` folder
-	_make_module("proto", {"handshaking":"*", "status":"*", "login":"*", "play":"*"})
-	for state in ("handshaking", "status", "login", "play"):
-		_make_module(f"proto/{state}", {"clientbound":"*", "serverbound":"*"})
-		for _direction in ("toClient", "toServer"):
-			direction = DIR_MAP[_direction]
-			buf = data[state][_direction]["types"]["packet"][1][0]["type"][1]["mappings"]
-			registry = { f"packet_{value}" : int(key, 16) for (key, value) in buf.items() }
-			contents = { key : snake_to_camel(key) for key in data[state][_direction]["types"].keys() if key != "packet" }
-			_make_module(f"proto/{state}/{direction}", contents)
-			for p_name in data[state][_direction]["types"].keys():
-				if p_name == "packet":
-					continue # it's the registry entry
-				packet = data[state][_direction]["types"][p_name]
-				pid = registry[p_name]
-				class_name = snake_to_camel(p_name)
-				with open(f"proto/{state}/{direction}/{p_name}.py", "w") as f:
-					f.write(PacketClassWriter(pid, class_name, packet[1]).compile())
-
-
-
diff --git a/aiocraft/mc/mctypes.py b/aiocraft/mc/mctypes.py
index bac6fd0..7aff0bd 100644
--- a/aiocraft/mc/mctypes.py
+++ b/aiocraft/mc/mctypes.py
@@ -1,4 +1,5 @@
 import struct
+import asyncio
 
 from typing import Any
 
diff --git a/compiler/proto.py b/compiler/proto.py
new file mode 100644
index 0000000..1ff07f4
--- /dev/null
+++ b/compiler/proto.py
@@ -0,0 +1,224 @@
+#!/usr/bin/env python
+import os
+import json
+import keyword
+import logging
+
+from pathlib import Path
+from typing import List, Dict, Union
+
+from aiocraft.mc.mctypes import *
+
+DIR_MAP = {"toClient": "clientbound", "toServer": "serverbound"}
+PREFACE = """\"\"\"[!] This file is autogenerated\"\"\"\n\n"""
+IMPORTS = """from typing import Tuple, Dict
+from ....packet import Packet
+from ....mctypes import *\n"""
+IMPORT_ALL = """__all__ = [\n\t{all}\n]\n"""
+OBJECT = """
+class {name}(Packet):
+	{fields}
+
+	_ids : Dict[int, int] = {ids}
+	_slots : Dict[int, Tuple[Tuple[str, Type]]] = {slots}
+"""
+
+TYPE_MAP = {
+	"varint": VarInt,
+	"u8": UnsignedShort,
+	"u16": UnsignedInt,
+	"u32": UnsignedLong,
+	"i16": Short,
+	"i32": Int,
+	"i64": Long,
+	"f32": Float,
+	"f64": Double,
+	"bool": Boolean,
+	"UUID": UUID,
+	"string": String,
+	"nbt": NBTTag,
+	"slot": Slot,
+	"position": Position,
+	"entityMetadataItem": EntityMetadataItem,
+	"entityMetadata": EntityMetadata,
+}
+
+def mctype(name:str) -> Type:
+	if not isinstance(name, str):
+		return String # should return TrailingByteArray but still haven't implemented it (:
+	if name in TYPE_MAP:
+		return TYPE_MAP[name]
+	return String # should return TrailingByteArray but still haven't implemented it (:
+
+def snake_to_camel(name:str) -> str:
+	return "".join(x.capitalize() for x in name.split("_"))
+
+def parse_slot(slot: dict) -> str:
+	name = slot["name"] if "name" in slot else "anon"
+	if keyword.iskeyword(name):
+		name = "is_" + name
+	t = mctype(slot["type"] if "type" in slot else "restBuffer")
+	return f"(\"{name}\", {t.__name__})"
+
+def parse_field(slot: dict) -> str:
+	name = slot["name"] if "name" in slot else "anon"
+	if keyword.iskeyword(name):
+		name = "is_" + name
+	t = mctype(slot["type"] if "type" in slot else "restBuffer")
+	return f"{name} : {t._pytype.__name__}"
+
+class PacketClassWriter:
+	title : str
+	ids   : str
+	slots : str
+	fields: str
+
+
+	def __init__(self, title:str, ids:str, slots:str, fields:str):
+		self.title = title
+		self.ids = ids
+		self.slots = slots
+		self.fields = fields
+
+	def compile(self) -> str:
+		return PREFACE + \
+			IMPORTS + \
+			OBJECT.format(
+				name=self.title, 
+				ids=self.ids, 
+				slots=self.slots,
+				fields=self.fields,
+			)
+
+def _make_module(path:Path, contents:dict):
+	os.mkdir(path)
+	imports = ""
+	for key in contents:
+		imports += f"from .{key} import {contents[key]}\n"
+	with open(path / "__init__.py", "w") as f:
+		f.write(PREFACE + imports)
+
+def compile():
+	import shutil
+	import zipfile
+	from urllib.request import urlretrieve
+
+	base_path = Path(os.getcwd())
+	mc_path = base_path / 'aiocraft' / 'mc'
+
+	# Retrieve proto definitions from PrismarineJS/minecraft-data
+	urlretrieve("https://github.com/PrismarineJS/minecraft-data/zipball/master", mc_path / "minecraft-data.zip")
+
+	with zipfile.ZipFile(mc_path / 'minecraft-data.zip', 'r') as f:
+		f.extractall(mc_path)
+
+	# First folder starting with PrismarineJS
+	folder_name = next(folder for folder in os.listdir(mc_path) if folder.startswith("PrismarineJS"))
+
+	shutil.rmtree(mc_path / 'proto')
+
+	PACKETS = {
+		"handshaking": {
+			"clientbound": {},
+			"serverbound": {},
+		},
+		"status": {
+			"clientbound": {},
+			"serverbound": {},
+		},
+		"login": {
+			"clientbound": {},
+			"serverbound": {},
+		},
+		"play": {
+			"clientbound": {},
+			"serverbound": {},
+		}
+	}
+	
+	# TODO load all versions!
+	all_versions = os.listdir(mc_path / f'{folder_name}/data/pc/')
+	all_versions.remove("common")
+	# _make_module(mc_path / 'proto', { f"v{v.replace('.', '_').replace('-', '_')}":"*" for v in all_versions })
+
+	for v in all_versions:
+		if v == "0.30c":
+			continue # Proto just too antique!
+		if not os.path.isfile(mc_path / f'{folder_name}/data/pc/{v}/protocol.json') \
+		or not os.path.isfile(mc_path / f'{folder_name}/data/pc/{v}/version.json'):
+			continue
+		with open(mc_path / f'{folder_name}/data/pc/{v}/version.json') as f:
+			proto_version = json.load(f)['version']
+
+		with open(mc_path / f'{folder_name}/data/pc/{v}/protocol.json') as f:
+			data = json.load(f)
+
+		for state in ("handshaking", "status", "login", "play"):
+			for _direction in ("toClient", "toServer"):
+				direction = DIR_MAP[_direction]
+				try:
+					buf = data[state][_direction]["types"]["packet"][1][0]["type"][1]["mappings"]
+				except KeyError:
+					logging.exception("Exception building %s|%s|%s definitions", v, state, direction)
+					print("Exception building %s|%s|%s definitions" % (v, state, direction))
+					# _make_module(mc_path / f"proto/{version}/{state}/{direction}", {})
+					continue
+				registry = { f"packet_{value}" : int(key, 16) for (key, value) in buf.items() }
+				for p_name in data[state][_direction]["types"].keys():
+					if p_name == "packet":
+						continue # it's the registry entry
+					if p_name not in registry:
+						logging.warning("Trying to make definitions for packet '%s'", p_name)
+						continue # wtf!
+					packet = data[state][_direction]["types"][p_name]
+					pid = registry[p_name]
+					class_name = snake_to_camel(p_name)
+					if p_name not in PACKETS[state][direction]:
+						PACKETS[state][direction][p_name] = {
+							"name" : class_name,
+							"definitions" : {},
+						}
+					PACKETS[state][direction][p_name]["definitions"][proto_version] = {
+						"id": pid,
+						"slots" : packet[1],
+					}
+
+	with open("/home/dev/HELP.json", "w") as f:
+		json.dump(PACKETS, f, indent=2)
+			
+	_make_module(mc_path / 'proto', { k:"*" for k in PACKETS.keys() })
+	for state in PACKETS.keys():
+		_make_module(mc_path / f"proto/{state}", { k:"*" for k in PACKETS[state].keys() })
+		for direction in PACKETS[state].keys():
+			_make_module(mc_path / f"proto/{state}/{direction}", { k:snake_to_camel(k) for k in PACKETS[state][direction].keys() })
+			for packet in PACKETS[state][direction].keys():
+				pkt = PACKETS[state][direction][packet]
+				slots = []
+				fields = set()
+				ids = []
+				for v in sorted(PACKETS[state][direction][packet]["definitions"].keys()):
+					defn = pkt["definitions"][v]
+					ids.append(f"{v} : 0x{defn['id']:02X}")
+					v_slots = []
+					v_fields = []
+					for slot in defn["slots"]:
+						with open("/home/dev/SLOTS", "a") as f:
+							f.write(str(slot) + "\n")
+						v_slots.append(parse_slot(slot))
+						fields.add(parse_field(slot))
+					slots.append(f"{v} : ( {','.join(v_slots)} ),")
+
+				with open(mc_path / f"proto/{state}/{direction}/{packet}.py", "w") as f:
+					f.write(
+						PacketClassWriter(
+							pkt["name"],
+							'{\n\t\t' + ',\n\t\t'.join(ids) + '\n\t}\n',
+							'{\n\t\t' + '\n\t\t'.join(slots) + '\n\t}\n',
+							'\n\t'.join(fields),
+						).compile()
+					)
+
+
+
+
+
diff --git a/setup.py b/setup.py
index 8ac31d0..99641c7 100644
--- a/setup.py
+++ b/setup.py
@@ -1,5 +1,9 @@
 from setuptools import setup, find_packages
 
+from compiler.proto import compile
+
+compile()
+
 setup(
 	name='aiocraft',
 	version='0.0.1',	
@@ -9,7 +13,7 @@ setup(
 	author_email='me@alemi.dev',
 	license='MIT',
 	packages=find_packages(),
-	install_requires=['requests'],
+	install_requires=[],
 	classifiers=[
 		'Development Status :: 1 - Planning',
 		'Intended Audience :: Developers',
@@ -19,4 +23,3 @@ setup(
 		'Programming Language :: Python :: 3.8',
 	],
 )
-