Yeah. Four commands. The first one downloads binaries from the internet. If I was inclined to do so, I would not need to build in the first place ;).

Give it a try with the current HEAD of their home-grown and undocumented build tool and see how far you get.

And regarding the deterministic builds: I call bullshit. They just don't want to follow the different packaging guidelines from the different operating systems, so they repackage everything. Now I have to trust them to keep all these dependencies up-to-date and I have to accept the unecessary bloat? No way.