@GrahamcOfBorg build fido2luks

I just find out, that init.rd script not works with fresh version properly.

It fails with

[    2.585602] stage-1-init: Waiting for your FIDO2 device...
[    2.586584] random: fido2luks: uninitialized urandom read (16 bytes read)
[    2.587060] random: fido2luks: uninitialized urandom read (4 bytes read)
[    2.587535] stage-1-init: IoError { cause: Os { code: 6, kind: Other, message: "No such device or address" } }
[    2.587750] stage-1-init: No FIDO2 key found, falling back to normal open procedure

Also, if I pass -i flag the argument --salt is ignored. Actually I don't understand why we need an interactive mode here if we already read salt few lines before.

@mmahut could you explain, please, why -i had been put here?

UPD: Removing this options make token works like a charm. I also add it to commit.

So, what about this PR? @prusnak @mmahut

@pltanton The correct name is pkg-config, not pkgconfig, please revert this change.

@mmahut can you approve?

Should I do something with this PR to merge it?

@prusnak is it possible to merge pr without @mmahut approve? Sadly I'm not familiar with nixpkgs PR flow and can't find an instruction to move this pr forward, can you help me with some piece of advice?

Given @prusnak approval, there is no problem, thank you!