Update based off work done in diceshaker.

.scripts/ki_plugin.py

@@ -0,0 +1,30 @@
+from kikit import panelize_ui_impl as ki
+from kikit.panelize import Panel
+from kikit.panelize_ui_impl import Substrate, readLength
+from pcbnewTransition import pcbnew
+from pcbnewTransition.pcbnew import LoadBoard, VECTOR2I
+from kikit.plugin import LayoutPlugin
+import json
+from typing import Iterable
+from kikit.common import fromDegrees
+
+class ManualLayout(LayoutPlugin):
+    def buildLayout(self, panel: Panel, inputFile: str,
+                    sourceArea: pcbnew.BOX2I) -> Iterable[Substrate]:
+
+        netRenamer = lambda x, y: self.netPattern.format(n=x, orig=y)
+        refRenamer = lambda x, y: self.refPattern.format(n=x, orig=y)
+        with open("boards.json") as json_file:
+          json_str = json_file.read() 
+        boards = []
+        for d in json.loads(json_str): 
+            source = {"type": "auto", "tolerance": readLength("5mm")}
+            board = LoadBoard(d["board"])
+            sourceArea = ki.readSourceArea(source, board)
+            drc_flag = False
+            if d["board"] == inputFile and not len(panel.sourcePaths):
+                drc_flag = True
+            panel.appendBoard(d["board"], VECTOR2I(*[readLength(p) for p in d["pos"]]),\
+                    sourceArea, inheritDrc=drc_flag, rotationAngle=fromDegrees(d.get("rot", 0.0)),\
+                    netRenamer=netRenamer, refRenamer=refRenamer)
+        return panel.substrates