CPM_PACKAGES is constantly reset

[rokups]

Hi, i am trying CPM and i have an issue where the second time i run generate step CPM tries to patch already patched packages again. I tracked the issue down to CPM_PACKAGES being unconditionally reset here. This clearly seems wrong, as i understand we clearly want to maintain value of CPM_PACKAGES between generate runs. However, since you have it there this way for four years it must work somehow... Can someone explain how this but is supposed to not reset cached CPM_PACKAGES value every time? Maybe i am missing something in my project configuration?

Thanks!