Create a basis from a set of deps sources and a set of aliases. By default, use
root, user, and project deps and no aliases (essentially the same classpath you
get by default from the Clojure CLI).
Each dep source value can be :standard, a string path, a deps edn map, or nil.
Sources are merged in the order - :root, :user, :project, :extra.
Options (note, paths resolved via *project-root*):
:root - dep source, default = :standard
:user - dep source, default = nil (for reproducibility, not included)
:project - dep source, default = :standard ("./deps.edn")
:extra - dep source, default = nil
:aliases - coll of aliases of argmaps to apply to subprocesses
Returns a runtime basis, which is the initial merged deps edn map plus these keys:
:resolve-args - the resolve args passed in, if any
:classpath-args - the classpath args passed in, if any
:libs - lib map, per resolve-deps
:classpath - classpath map per make-classpath-map
:classpath-roots - vector of paths in classpath order