I add /usr/lib/swift as an rpath, which seems to fix the issue even though
there doesn't seem to be a relevant library at that location on my machine.
Based on my research, wondering if `-Wl,-weak-lswiftCompatibilityConcurrency`
is also required for this to work on older OSes, but holding back for now.
* Generate the themes on build
* In debug builds, watch the theme sources. When they change, re-generate
the themes and reload the current theme, removing the need for the
`theme_selector::Reload` command.
Co-authored-by: Keith Simmons <keith@zed.dev>