Gradle - access other plugin version - gradle

Question

I'm want to obtain other plugin version from my own plugin. I can't find a way to do that via PluginContainer nor PluginManager.
For example for build.gradle.kts:
plugins {
id("some.plugin") version "1.2.3"
id("my.plugin") version "3.4.5"
}
From the code of "my.plugin" I would like to read that "some.plugin" is in version "1.2.3".

Answer 1

If you want to access other plugins versions you could do something like:
plugins {
id("base")
id("org.hidetake.ssh") version "2.10.1"
id("com.jfrog.artifactory") version "4.29.2"
}
apply plugin: MyPlugin
class MyPlugin implements Plugin<Project> {
#Override
void apply(Project target) {
// retrieve plugins dependencies from buildscript classpath
DependencySet pluginDependencies = target.buildscript.configurations.getByName("classpath").allDependencies
// use the found plugins dependencies
pluginDependencies.forEach { Dependency classpathDep ->
println(" Plugin dependency found: $classpathDep.name, version=$classpathDep.version")
}
}
}
This will prompt:
> Configure project :
Plugin dependency found: org.hidetake.ssh.gradle.plugin, version=2.10.1
Plugin dependency found: com.jfrog.artifactory.gradle.plugin, version=4.29.2
> Task :prepareKotlinBuildScriptModel UP-TO-DATE
BUILD SUCCESSFUL in 434ms

Answer 2

nop ... still 2022 this is a 🚧
even google ships tons of lines on it
even your api() declaration (with version range)
nor can I see that dependency constraints will help us
in combination
like
class YourPlugin : Plugin<Project> {
override fun apply(project: Project) {
project
.buildscript.dependencies.constraints
.add("classpath", "com.example:other-plugin") {
it.version {
it.require("[1.0, 2.0)")
}
}
}
}
because you can't add constraints in this gradle phase
ending with
> Cannot change dependencies of dependency configuration ':app:classpath' after it has been resolved.
tldr;
so I don't see anything else than
iterate all project build dependencies checking for version
await depending plugin provides a version
https://docs.gradle.org/current/userguide/toolchains.html is JVM specific and even not addresses this aspect
btw, I was not successful when trying to use the version constraints for comparison
if (project.pluginManager.hasPlugin("com.example.other") == false) {
throw DependencyVerificationException("This plugin needs com.example.other")
}
project
.buildscript
.configurations
.getByName("classpath")
.withDependencies {
it.find {
it.group == "com.example" &&
it.name == "other-plugin"
}
?.version
?.let {
if (DefaultImmutableVersionConstraint.of("1.0") /*no clue how to compare with*/ == it)
else throw DependencyVerificationException("This plugin needs com.example.other at least with version 1.0")
} ?: throw DependencyVerificationException("This plugin needs com.example.other")
}
btw. because it is related: for testing different versions there are indeed some things out there like https://github.com/ajoberstar/gradle-stutter