pyln: Migrate implementation from pylightning to pyln-client

This should not affect any consumer of the API since we just shift the actual
implementation from one side to the other, and keep aliases in place so
scripts don't break.

We also bump the version number from 0.0.7.3 to 0.7.4 which allows us to be in
sync with c-lightning itself, and remove the superfluous `0` in front.

Makefile

@@ -263,7 +263,7 @@ ifeq ($(PYTEST),)
 	exit 1
 else
 # Explicitly hand DEVELOPER and VALGRIND so you can override on make cmd line.
-	PYTHONPATH=`pwd`/contrib/pylightning:$$PYTHONPATH TEST_DEBUG=1 DEVELOPER=$(DEVELOPER) VALGRIND=$(VALGRIND) $(PYTEST) tests/ $(PYTEST_OPTS)
+	PYTHONPATH=`pwd`/contrib/pyln-client:$$PYTHONPATH TEST_DEBUG=1 DEVELOPER=$(DEVELOPER) VALGRIND=$(VALGRIND) $(PYTEST) tests/ $(PYTEST_OPTS)
 endif
 
 # Keep includes in alpha order.
@@ -316,7 +316,7 @@ check-python:
 	@# W503: line break before binary operator
 	@flake8 --ignore=E501,E731,W503 --exclude=contrib/pylightning/lightning/__init__.py ${PYSRC}
 
-	PYTHONPATH=contrib/pylightning:$$PYTHONPATH $(PYTEST) contrib/pylightning/
+	PYTHONPATH=contrib/pyln-client:$$PYTHONPATH $(PYTEST) contrib/pyln-client/
 
 check-includes:
 	@tools/check-includes.sh

contrib/pylightning/lightning/__init__.py

@@ -1,2 +1 @@
-from .lightning import LightningRpc, RpcError, Millisatoshi, __version__
-from .plugin import Plugin, monkey_patch
+from pyln.client import LightningRpc, RpcError, Millisatoshi, __version__, Plugin, monkey_patch

contrib/pylightning/requirements.txt

@@ -0,0 +1 @@
+pyln-client==0.7.3

contrib/pyln-client/pyln/client/__init__.py

@@ -1,4 +1,6 @@
-from lightning import LightningRpc, Plugin, RpcError, Millisatoshi, __version__, monkey_patch
+from .lightning import LightningRpc, RpcError, Millisatoshi, __version__
+from .plugin import Plugin, monkey_patch
+
 
 __all__ = [
     "LightningRpc",

contrib/pylightning/lightning/lightning.py → contrib/pyln-client/pyln/client/lightning.py

@@ -5,7 +5,7 @@
 from decimal import Decimal
 from math import floor, log10
 
-__version__ = "0.0.7.4"
+__version__ = "0.7.3"
 
 
 class RpcError(ValueError):

contrib/pylightning/lightning/plugin.py → contrib/pyln-client/pyln/client/plugin.py

@@ -1,6 +1,6 @@
 from collections import OrderedDict
 from enum import Enum
-from lightning import LightningRpc, Millisatoshi
+from .lightning import LightningRpc, Millisatoshi
 from threading import RLock
 
 import inspect

contrib/pyln-client/requirements.txt

@@ -1 +0,0 @@
-pylightning==0.0.7.3

contrib/pylightning/tests/test_millisatoshi.py → contrib/pyln-client/tests/test_millisatoshi.py

@@ -1,4 +1,4 @@
-from lightning import Millisatoshi
+from pyln.client import Millisatoshi
 
 
 def test_sum_radd():

contrib/pylightning/tests/test_plugin.py → contrib/pyln-client/tests/test_plugin.py

@@ -1,5 +1,5 @@
-from lightning import Plugin
-from lightning.plugin import Request, Millisatoshi
+from pyln.client import Plugin
+from pyln.client.plugin import Request, Millisatoshi
 import itertools
 import pytest
 

contrib/pylightning/tests/test_units.py → contrib/pyln-client/tests/test_units.py

@@ -1,4 +1,4 @@
-from lightning import Millisatoshi
+from pyln.client import Millisatoshi
 
 
 def test_to_approx_str():