In D7071#170268, @Fabien wrote:

Note that you still need to build an index per group (so within the loop), despite this is not what is done here.

This doesn't strike me as something that belongs in CONTRIBUTING and brings up lots of questions:

• Why do we expect new devs to have multiple shellcheck versions installed?
• Why do we expect shellcheck to not be in PATH correctly?
• What makes shellcheck install special such that we need to tell devs to check the version, but we do not do this for other tools?

Expanding our ownership to gitian-builder makes me uncomfortable, but this change is small and the benefits far outweigh the cost of maintaining this change.

Version bump is missing from contrib/debian/control. Please add this to the test plan also.

In D7057#170064, @Fabien wrote:

I don't quite get it, since D7052 updated the generated extension there is no html anymore in the RPC docs ?

Use packaged version, even though it's much older

In favor of D6997 now that the base image building has been fixed.

Simplify waiting for bitcoind

• Add bitcoin-cli for better parallelism
• Make waiting for bitcoind more robust

Fix some bugs. Still need to figure out where var/lxc.config will come from.