New comment by ahesford on void-packages repository

https://github.com/void-linux/void-packages/pull/28261#issuecomment-769324698

Comment:
I repeated the above loop over `srcpkgs/*` and identified the following additional packages which fail to build:
- [x] duplicity
- [x] fava
- [x] khard
- [x] nagstamon
- [x] protontricks
- [x] python-b2sdk
- [x] rdiff-backup
- [x] terminator
- [x] todoman
- [x] whipper

Fixing these now.