Handle version of JET when testing on several versions of Julia

[gdalle]

When I test my packages, I use several versions of Julia: LTS (currently 1.6), release (1.9) and nightly (1.10). I only use JET on release and nighty, and for these two I want the latest version of JET (0.8.3).
If I put a recent compat bound on JET in the Project.toml, Julia LTS will complain that it cannot install it, and my CI will fail. I don't think it is currently possible to have compat bounds that depend on the Julia version. So for now, my workaround is the following:

using Pkg
using JET

function get_pkg_version(name::AbstractString)
    for dep in values(Pkg.dependencies())
        if dep.name == name
            return dep.version
        end
    end
    return error("Dependency not available")
end

@testset "Code quality (JET.jl)" begin
    if VERSION >= v"1.9"
        @assert get_pkg_version("JET") >= v"0.8.3"
        JET.test_package(Graphs; target_defined_modules=true)
    end
end

Is there a more elegant approach? Should this maybe be documented?

[aviatesk]

There is no proper support for 1.6 so that is probably the best way to workaround the compat problem.