That was much more difficult than I thought.
The combination of your work and upstream had dealt with all the
date/time based stuff.
The tex source for the various images which get inserted had the magic:
\pdfinfoomitdate 1
\pdfsuppressptexinfo 1
\pdftrailerid{}
in them but the .tex file generated by sphinx did not.
I've added a patch which modifies the conf.py file to make that happen.
Multiple builds in a row now produce manual.pdf with the same checksum.
I pushed that and made another merge request.
I've also updated the changelog to hopefully explain why the patches
were dropped.
Cheers,
Scott
