Same rule as the four movers before it. What makes this one different is
that `package` was the LAST option under `services.hyperhive.swarm.ui` —
`enable` moved in an earlier slice — so the namespace now holds nothing
and survives only as its two rename entries.
Two consequences worth naming:
flake.nix set `swarm.ui.package` directly. Left alone the shim would
have kept it working, which is exactly the trap: this repo's own flake
would then be setting the option through its own deprecation shim and
warning on every eval. It is repointed here. Four sibling assignments in
that file name movers this commit does not touch; they move with theirs.
The `cfg` alias is deleted. With the one code reader repointed it bound
nothing but an empty attrset — which still evaluates, so nothing would
have failed; it would just have sat there implying `swarm.ui` still held
something. Three comments naming `cfg.package` are repointed with it.
`uiOldPath` sets both old paths, so dropping either rename fails the
eval. Its case reads the vhost's rendered `root` rather than the option,
because that is the half a resolving-but-unwired shim would break.
Not touched: swarm-ui.nix's description says its default is wired "the
same way `swarm.controller.package` is", which is true until the
controller moves. It belongs to that commit, not this one.
Refs #3772.
190763b3a2