if { [env_var_exists_and_non_empty FILL_CONFIG] } {
  set fill_config $::env(FILL_CONFIG)
} else {
  set fill_config ""
}

if { [env_var_exists_and_non_empty SEAL_GDS] } {
  set seal_gds $::env(SEAL_GDS)
} else {
  set seal_gds ""
}

exec klayout -zz -rd design_name=$::env(DESIGN_NAME) \
  -rd in_def=$::env(RESULTS_DIR)/6_final.def \
  -rd in_files="$::env(GDSOAS_FILES) $::env(WRAPPED_GDSOAS)" \
  -rd config_file=$fill_config \
  -rd seal_file=$seal_gds \
  -rd out_file=$::env(RESULTS_DIR)/6_final.$::env(STREAM_SYSTEM_EXT) \
  -rd tech_file=$::env(OBJECTS_DIR)/klayout.lyt \
  -rm $::env(UTILS_DIR)/def2stream.py