add scripts to remove output drivers

Makefile

@@ -65,12 +65,12 @@ $(TARGET_MACRO):
 # Conversion targets
 #
 $(GDS_MACROS_SRC):
-	./gds_add_pnb.py $@
+	./script/gds_add_pnb.py $@
 
 $(GDS_MACRO_PATH)/%.gds: $(MAG_MACRO_PATH)/%.mag
 	$(info MAG -> GDS)
 	echo "gds write \"$@\"" | magic -rcfile $(PDK_MAGICRC) -noconsole -dnull $<	
-	./gds_add_pnb.py $@
+	./script/gds_add_pnb.py $@
 
 $(LEF_MACRO_PATH)/%.lef: $(MAG_MACRO_PATH)/%.mag
 	$(info MAG -> LEF)

script/gds_rm_outputs.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+import sys, os
+import gdspy
+
+BOUNDARY_LAYER = 235  # prBndry
+BOUNDARY_DATATYPE = 4 # boundary
+
+if __name__ == '__main__':
+
+  # Check args
+  if len(sys.argv) < 2:
+    print(f"{sys.argv[0]} <file.gds>")
+    print("warning: this script modifies the file in-place")
+    exit(1)
+
+  # Check filepath
+  filepath: str = sys.argv.pop()
+  if not os.path.isfile(filepath):
+    raise FileNotFoundError("unable to locate GDS file specified")
+
+  target_cellname: str = os.path.basename(filepath.split(".")[0])
+
+  # Load GDS
+  gdsii = gdspy.GdsLibrary(infile=filepath)
+  if not target_cellname in gdsii.cells:
+    raise RuntimeError("cannot locate a cell in the GDS file matching the filename")
+
+  # Delete output driver cells
+  target_cell: gdspy.Cell = gdsii.cells[target_cellname]
+  if "sky130_fd_sc_hd__buf_2" in gdsii.cells:
+    del gdsii.cells["sky130_fd_sc_hd__buf_2"]
+    print("removing: sky130_fd_sc_hd__buf_2")
+  if "sky130_fd_sc_hd__conb_1" in gdsii.cells:
+    del gdsii.cells["sky130_fd_sc_hd__conb_1"]
+    print("removing: sky130_fd_sc_hd__conb_1")
+
+  gdsii.write_gds(filepath)
+  print("Success")
+