Specify path to dependencies required by custom plugin

Hi there!

I have a problem regarding custom plugin.
Let’s assume I have a plugin which do some task. It uses some third-party libraries.

class TaskPlugin implements Plugin<Project> {
    void apply(Project project) {

        project.task('task') << {
            println 'simple task'
        }

   }
}

So in order to add it to my project I have to do something like this

    apply plugin: 'my-plugin'
    task {
         ... do something
    }
    buildscript {
        repositories {
            flatDirs dir('.')
        }
        dependencies {
            classpath ("my-group:my-plugin:my-version")
            classpath ("dependency:dependency:dependency")
        }
    }

But my application may have already this dependencies

dependencies {
    compile ("dependency:dependency:dependency")
}

What should I add to my plugin in order to get rid of those classpath ("dependency:dependency:dependency") lines?

Also I’d like plugin to know the path of compiled files of the project (because it uses them as dependencies too), where the plugin is used, because currently I have to set it like this

It would be good if plugin was able to get the project name at least (without need to specify my_project/ or my_another_project/)
So what should I add to my plugin - some configuration or something else - that will allow me to not set path to compiled classes manually?