cua-driver ships prebuilt from the trycua/cua monorepo release feed. The
declarative github provider reads a release feed as a single product and
trips on the monorepo's foreign and hyphenated tags, so a bespoke
.omarchy/upstream.sh selects the newest stable cua-driver-rs release by
tag shape (upstream flags every driver release prerelease; nightlies are
distinguished by tag prefix instead) and reads its checksums.txt manifest.
The vendor tree stays together under /usr/lib/cua-driver with a /usr/bin
symlink, matching upstream's own layout: the CLI resolves its cursor-theme
compiler as a sibling of /proc/self/exe. Verified by installing the built
package into a clean archlinux:base container and exercising the CLI.