I’ve figured out what the null is. This particular variety of rpm plugin is trying something no earlier one has. It doesn’t know the “from” for one of its copyspecs until a separate configuration task has run. Nonetheless I want this file to go into the rpm I’m building. Even though I’ve specified a getter() as the from, this is still getting called at configure time when it is still null. I’ve tried every lazy evaluation trick I know to delay evaluation, and it doesn’t work.
How may I generate a copy spec at dynamically at runtime?