Module relations

Functions for working with package relations.

Functions

• ensure_exact_version
  Update a relation string to depend on a specific version.
• ensure_minimum_version
  Update a relation string to ensure a particular version is required.
• ensure_relation
  Ensure that a relation exists.
• ensure_some_version
  Ensure that a relation exists for a particular package.
• is_dep_implied
  Check if one dependency is implied by another.
• is_relation_implied
  Check if one relation implies another.