Gradle: add plugin dependency from another plugin - gradle

Question

I'm creating gradle custom plugin and one of my tasks needs to be sure that another plugin applied to same project. Because it will operate on top of it.
I want for users of my plugin to avoid setting up an explicit dependency to another plugin - I want to do it inside my plugin.
So, I want to have this plugin (https://plugins.gradle.org/plugin/org.hidetake.ssh) applied. It's my dependency.
The way how I create plugin - I just create a class code on groovy, put it in buildSrc\src\main\groovy and apply groovy plugin in project. So my custom plugin is visible to gradle on build phase. It works, I have few other plugins done this way for same project, so it's fine for now.
I've looked through other topics and google for same question, but I can not make this work for me. This how I apply the code:
void apply(Project project) {
project.buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
}
dependencies {
classpath "org.hidetake:gradle-ssh-plugin:1.1.3"
}
}
project.apply plugin: "org.hidetake.ssh"
...
The error message I got: Plugin with id 'org.hidetake.ssh' not found.
I tried to do it via gradle api also using project.repositories.mavenCentral() and project.dependencies.add and project.apply(plugin:'org.hidetake.ssh') then - doesn't work also - same error message. Tried to use long notation in project.dependencies.add("myConfig",[group:'org.hidetake', name:'gradle-ssh-plugin', version:'1.1.3']) - no result.
Appreciate if someone can guide to the correct syntax\way to make it work.

Answer 1

Ok, finally I got it. To solve the issue you need to do the following:
Place build.gradle in your buildSrc directory.
Declare dependency for the plugin as runtime. Like this:
repositories {
jcenter()
}
dependencies {
runtime 'org.hidetake:gradle-ssh-plugin:2.6.0'
}
Apply plugin explicitly in your own plugin definition. Like this:
void apply(Project project) {
project.pluginManager.apply('org.hidetake.ssh')
...