Finding the prefix used for caravel subcells in the user GDS.
User prefix is UQ_
Replacing cell caravel in the user GDS file.
Reading GDS file for alternate cell caravel
Cell caravel found at position 235669746
Cell caravel ends at position 247680056
Reading GDS file for original source ./gds/caravel_00010004.gds
Cell caravel found at position 2484258218
Cell caravel ends at position 2496267932
Cell caravel checksum is 12009686
Info:  Structure caravel at 2484258218 to 2496267932 has checksum 12009686 != 12009824 (checksum failure)
Prefixing caravel subcells in the user GDS
Running:  /usr/share/pdk/bin/change_gds_string.py user_id_textblock UQ_user_id_textblock copyright_block UQ_copyright_block open_source UQ_open_source storage UQ_storage sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped UQ_sky130_fd_sc_hvl__lsbufhv2lv_1_wrapped user_id_programming UQ_user_id_programming simple_por UQ_simple_por gpio_control_block UQ_gpio_control_block mgmt_core UQ_mgmt_core mgmt_protect UQ_mgmt_protect chip_io UQ_chip_io user_project_wrapper UQ_user_project_wrapper ./gds/caravel_00010004_b.gds -debug -verbatim
Traceback (most recent call last):
  File "/usr/share/pdk/bin/change_gds_string.py", line 72, in <module>
    with open(source, 'rb') as ifile:
FileNotFoundError: [Errno 2] No such file or directory: './gds/caravel_00010004_b.gds'
Finished.