starlark: require go1.23 for new iterators #551
Merged
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The correct type for new iterators is iter.Seq, which depends on a go1.23-only package, so we must limit the new functions to new toolchains.
In principle this is (yet another) breaking change, but I suspect only users of (pre-)go1.23 will notice, and they are living on the bleeding edge by choice. (Even then, if the iterators are used only as
range
operands, they will be fine.)Also, fix a couple of doc links.