support BitBox02 Nova by updating bitbox02 lib to v7.0.0

[benma]

This adds support for BitBox02 Nova. It has the same API has BitBox02.

[Sjors]

Looks like the Github repo moved without a redirect. I checked on https://bitbox.swiss/dev/ that the new org account is correct.

[benma]

What do you mean by 'without a redirect'?

https://github.com/digitalbitbox/bitbox02-firmware/tree/master/py/bitbox02 redirects to https://github.com/BitBoxSwiss/bitbox02-firmware/tree/master/py/bitbox02

[Sjors]

I'm trying this out against the repaired CI in #801. I noticed this PR does not touch CI at all. Is it simply replacing Bitbox 02 simulator with the new Nova device?

It seems better to run both. This could be done by adding the new device to the sim-builder-bitbox matrix (assuming #795 is merged), and then add it to the matrix in test-bitbox-dist and test-bitbox.

---

I see the firmware binaries are identical: https://github.com/BitBoxSwiss/bitbox02-firmware/blob/master/releases/README.md

As is the simulator?

[benma]

Thanks for taking a look!

I see the firmware binaries are identical: https://github.com/BitBoxSwiss/bitbox02-firmware/blob/master/releases/README.md

As is the simulator?

Exactly, the same firmware runs on both devices, and the API is the same, so there is no need to change anything in the CI.

[benma]

@Sjors can we merge? Would be great to have a release including this PR out soon too.

[Sjors]

That's up to @achow101, ideally we'd merge #795 first so you can rebase and then merge this with green CI.

[Sjors]

Something has changed? When I include this in #795 now, CI still breaks:

tar: test/work/bitbox02-firmware/build-build/bin/simulator: Cannot stat: No such file or directory

https://github.com/bitcoin-core/HWI/actions/runs/17324099849/job/49184179642?pr=795#step:3:1866

[benma]

Something has changed? When I include this in #795 now, CI still breaks:

tar: test/work/bitbox02-firmware/build-build/bin/simulator: Cannot stat: No such file or directory

https://github.com/bitcoin-core/HWI/actions/runs/17324099849/job/49184179642?pr=795#step:3:1866

Indeed, the path to the simulator bin has changed in the BB02 repo. I added a commit to fix it.

Imho it would make sense not to build master of all the HWW repos, it's very fragile and causes the HWI CI to randomly break. It's not HWI's responsibility to make sure unreleased HWW firmwares are working. Have you considered just pulling the latest simulator (and bitcoind) binaries in the CI instead? It would speed up CI a lot and not cause random breaks, and updates to them can be done in dedicated PRs that also fix potential new issues.

[Sjors]

Thanks, I cherry-picked it into #795.

Imho it would make sense not to build master of all the HWW repos, it's very fragile and causes the HWI CI to randomly break.

I tend to agree, but for now I'll just play the whackamole game.

Have you considered just pulling the latest simulator (and bitcoind) binaries in the CI instead?

That's one option, but just using release tags or fixed commits would already be an improvement for stability.

[Sjors]

Let's continue debugging it over in #795.

[Sjors]

This has been merged via #795 so can be closed.

[benma]

This has been merged via #795 so can be closed.

Thank you very much for pushing this!