Ensure that the dependency is satisfied by the current installation of gem. If it is not an exception is raised.
Creates an installer for spec that will install into gem_home. If user is true a user-install will be performed.
Turn an array of [name, version, platform] into an array of NameTuple objects.
Turn an array of NameTuple objects back into an array of
tuples.
Indicate if this NameTuple matches the current platform.
Copies this package to path (if possible)
Gzips content written to gz_io to io.
Reads and loads checksums.yaml.gz from the tar file gem
This is ported over from the yaml_tree in 1.9.3
Creates or an HTTP connection based on uri, or retrieves an existing connection, using a proxy if needed.
Call hooks on installed gems
Load a dependency management file.
A recommended version for use with a ~> Requirement.
returns an integer in (-infty, 0] a number closer to 0 means the dependency is less constraining
dependencies w/ 0 or 1 possibilities (ignoring version requirements) are given very negative values, so they always sort first, before dependencies that are unconstrained