Consider bundling Python binary on GNU/Linux
Namecoin (specifically Electrum-NMC) currently requires Python 3.6+, which is not yet universally available. To avoid incompatibility issues on older GNU/Linux distros, it may be worth considering bundling a Python 3.6+ binary with Tor Browser when building with Namecoin is enabled.
(This would have also avoided legacy/trac#33749 (moved).)