Pavol Rusnak

Yeah, let's drop shell/default.nix. I think we can also drop direnv - it's not necessary for running llama as nix flake.

> Interestingly, this does not happen when building in my normal macOS environment without Nix. My guess is because `stdenv` in nixpkgs for macos is still stuck at Clang 11.x...

We should boost priority of this issue with the upcoming mobile app. I cannot scan XPUB without Trezor connected and that's not really cool.

> * no way to display the QR code on device I can live with that, but QR code should work the same way it does for addresses. If this...

> Ok, I'll see what I can do about the backup warning. The other issues must be handled by firmware. We can display xpub qr code in the firmware. Not...

> I can't see it on Trezor screen: I guess it was dropped from the UI when it was redesigned. It used to be there.

> Tails and Trezor by design scream to work together. Electrum works with Trezor out of the box in Tails.

> Just tried, and unfortunately Tails 6 have incompatible versions of the two: Electrum says it wants a version of trezor 0.13 while installed there is a 0.12.4-2 ! I...

go-envconfig can override separator via `separator` keyword: https://github.com/sethvargo/go-envconfig#separator

My experience with submodules, to put it mildly, is "far from optimal" because they make development much more tedious, especially for rapidly evolving projects. Imagine needing to change the API;...