DependencySubstitutions

Adds a dependency substitution rule that is triggered for every dependency (including transitive) when the configuration is being resolved. The action receives an instance of DependencySubstitution that can be used to find out what dependency is being resolved and to influence the resolution process.

Example:

configurations { main }
// add dependency substitution rules
configurations.main.resolutionStrategy.dependencySubstitution {
  // Use a rule to change the dependency module while leaving group + version intact
  all { DependencySubstitution dependency ->
    if (dependency.requested instanceof ModuleComponentSelector && dependency.requested.name == 'groovy-all') {
      dependency.useTarget details.requested.group + ':groovy:' + details.requested.version
    }
  }
  // Use a rule to replace all missing projects with module dependencies
  all { DependencySubstitution dependency ->
   if (dependency.requested instanceof ProjectComponentSelector) {
      def targetProject = findProject(":${dependency.requested.path}")
      if (targetProject == null) {
        dependency.useTarget "org.myorg:" + dependency.requested.path + ":+"
      }
    }
  }
}

The rules are evaluated in order they are declared. Rules are evaluated after forced modules are applied (see ResolutionStrategy.force()

Create a ModuleComponentSelector from the provided input string. Strings must be in the format "{group}:{module}:{version}".

Create a ProjectComponentSelector from the provided input string. Strings must be in the format ":path".

DSL-friendly mechanism to construct a dependency substitution for dependencies matching the provided selector.

Examples:

configurations { main }
configurations.main.resolutionStrategy.dependencySubstitution {
  // Substitute project and module dependencies
  substitute module('org.gradle:api') with project(':api')
  substitute project(':util') with module('org.gradle:util:3.0')

  // Substitute one module dependency for another
  substitute module('org.gradle:api:2.0') with module('org.gradle:api:2.1')
}