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:
- [ ] duplicity
- [ ] fava
- [ ] khard
- [ ] nagstamon
- [ ] protontricks
- [ ] python-b2sdk
- [ ] rdiff-backup
- [ ] terminator
- [ ] todoman
- [ ] whipper

Fixing these now.