It should be possible to emit a CRAN-dependency, using something like:
instead of
-
name: dplyr
version: 0.9.6
One can solve the problem of checking CRAN on startup every time by caching the latest timestamp in the ~/.R/lockbox directory, and only checking once every N hours (can be a global options like lockbox.check_dependency_versions_interval, by default 1 hour).
Just a friendly suggestion. :)