update structarrays compat

[piever]

In StructArrays 0.6, StaticArrays are treated the same way as the underlying Tuple in terms of data storage, so one should pass the tuple of columns directly to the constructor, without having to nest StructArrays.

I'm dropping compatibility with the older version, because it seems tricky to support both.

[piever]

Tests pass locally, but I'm not sure why the documentation build does not find version StructArrays 0.6

[SimonDanisch]

Hmmm weird indeed.. Can you try to add an Pkg.up() to the docs ci stage?

[SimonDanisch]

Those other CI stages should run almost exactly the same !? :D

[piever]

Yeah, not too sure how to debug this... Maybe it's just a matter of waiting a bit and trying again :)

I thought maybe it doesn't find the version because StructArrays 0.6 requires julia 1.3 minimum, but the docs seem to run on 1.6, so that shouldn't be it

[knuesel]

This is an issue with the PkgServer protocol serving an outdated registry. At first I couldn't reproduce this locally because I had the old Git-clone version of the registry in ~/.julia/registries/General. After removing it and installing StructArrays I got version 0.5.1.

There's a discussion at JuliaRegistries/General#16777 and workarounds have been implemented e.g. at julia-actions/julia-runtest#17 and JuliaCI/PkgTemplates.jl#296.

For example in our case replacing the Pkg.update() line in ci.yml with ENV["JULIA_PKG_SERVER"] = "" would do the trick.