Create package specification list which consists of all the details required to identify and acquire source of the package.
package_spec(
name = NULL,
repos = NULL,
version = numeric_version("0.0"),
op = ">"
)package_spec_source(path = NULL, ...)
package_spec_archive_source(path = NULL, ...)
name of the package.
repository where package with given name should identified.
package_version object specifying minimal version required by packages depending on this package.
operator used with version
.
path to the source of the package (either bundled or not). URLs are acceptable.
parameters passed to downstream constructors