[bug#65037] Fix python-daemon, Trezor support

[Attila Lendvai]

dear Maintainers,

the ultimate intention of this series of patches is to fix Trezor support.

the reason i'm sending seemingly unrelated patches under one issue is that some 
of them are dependent on each other. please apply in order.

-- 
• attila lendvai
• PGP: 963F 5D5F 45C7 DFCD 0A39
--
“A political situation is the manifestation of a parallel psychological problem 
in millions of individuals. This problem is largely unconscious (which makes it 
a particularly dangerous one!)”
        — Carl Jung (1875–1961), Letters, vol.1 pg. 535