hash_geom=True forces to try using phidl even it is not installed

[shamil777]

While calling lytest.exe run myfile mytestfunc from command line
I have a following traceback:

'c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\pya\init.py'>
Traceback (most recent call last):
File "C:\Users\botan\AppData\Local\Programs\Python\Python38\Scripts\lytest-script.py", line 33, in
sys.exit(load_entry_point('lytest==0.1.0', 'console_scripts', 'lytest')())
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\command_line.py", line 62, in cm_main
cm_xor_test(args.args)
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\command_line.py", line 116, in cm_xor_test
difftesting_function()
File ".\Projects\32QStairDisp\test_design.py", line 22, in test_design_shmest
difftest_it(design_total_draw)()
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\utest_buds.py", line 77, in wrapper
run_xor(ref_file, test_file, tolerance=1, hash_geom=True, verbose=False)
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\kdb_xor.py", line 163, in run_xor
run_xor_pya(*args, **kwargs)
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\kdb_xor.py", line 18, in run_xor_pya
run_xor_phidl(file1, file2, tolerance, hash_geom=True, verbose=verbose)
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\kdb_xor.py", line 140, in run_xor_phidl
TOP1, TOP2 = [import_oas(fn) for fn in [file1, file2]]
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\kdb_xor.py", line 140, in
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\phidl_oas.py", line 19, in import_oas
retval = pg.import_gds(filename, cellname=cellname, flatten=flatten)
File "c:\users\botan\appdata\local\programs\python\python38\lib\site-packages\lytest\phidl_oas.py", line 12, in __getattr__
raise ImportError('phidl was not found, so import/write OAS will not work')

My thoughts that problem resides here:

lytest/lytest/kdb_xor.py

Lines 15 to 17 in c7d2c10

	if hash_geom or pya is None:
	run_xor_phidl(file1, file2, tolerance, hash_geom=True, verbose=verbose)
	return

while calling run_xor(ref_file, test_file, tolerance=1, hash_geom=True, verbose=False)
hash_geom=True forces to use phidl and trying to load .oas format though reference design is .gds
Furthermore, phidl is not installed in my particular case.