# Using 2 gradle settings plugin

**URL:** https://discuss.gradle.org/t/using-2-gradle-settings-plugin/46703
**Category:** Help/Discuss
**Created:** [October 6, 2023, 10:56am UTC](https://discuss.gradle.org/t/using-2-gradle-settings-plugin/46703 "2023-10-06T10:56:35Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Val94](https://avatars.discourse-cdn.com/v4/letter/v/35a633/32.png) [@Val94](https://discuss.gradle.org/u/Val94)
#### Post date: [October 6, 2023, 10:56am UTC](https://discuss.gradle.org/t/using-2-gradle-settings-plugin/46703/1 "2023-10-06T10:56:35Z")

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Hello,

I have a problem to use 2 gradle setting plugins at the same time in a test environment.

I have:

1. a plugins jar that contains one settings plugin and multiple project plugins (applying AGP)
2. an other ‘build’ project where I build an other settings plugin and another projects plugins.

Both of them are same plugins dependencies.

In my ‘build’ project 2, i use an GradleRunner build with a testing project that use also plugins from my bundled jars.

The testing project used by GradleRunner has this settings.gradle.kts file:

```gradle
pluginManagement {
    plugins {
        id("my.setting.plugin.from1") version "X.Y.Z"
    }
}

plugins {
    id("my.setting.plugin.from1")
    id("my.setting.plugin.from2_under_test")
}

dslfrom1{
...
}
dslfrom2{
...
}

```

But when the testing project is loaded by the GradleRunner, i have the following error:

> Extension of type ‘LibraryExtension’ does not exist. Currently registered extension types:  
> […, LibraryExtension,…]

Caused by: org.gradle.api.internal.plugins.PluginApplicationException: Failed to apply plugin class ‘project\_plugin\_from\_1’.  
at org.gradle.api.internal.plugins.DefaultPluginManager.doApply(DefaultPluginManager.java:173)  
at org.gradle.api.internal.plugins.DefaultPluginManager.apply(DefaultPluginManager.java:151)  
at X.X.X.X.apply(X.kt:21)

This problem occurs when a project-plugin from 1 is applied in a gradle module of my testing project.

I cannot reproduce the problem when I use my testing project directly (without gradle runner)  
and use these 2 plugins bundles as local maven dependencies.

gradle version: 8.0.0

Thanks.

---

<div class="post-metadata">

### Author: ![Vampire](https://sea1.discourse-cdn.com/gradle/user_avatar/discuss.gradle.org/vampire/32/9082_2.png) [@Vampire](https://discuss.gradle.org/u/Vampire)
#### Post date: [October 9, 2023, 3:40pm UTC](https://discuss.gradle.org/t/using-2-gradle-settings-plugin/46703/2 "2023-10-09T15:40:33Z")

</div>

Sounds like a class loader problem.  
The one registering `LibraryExtension` uses the class from one class loader,  
while the one trying to get the extension uses the class from a different class loader.  
As the classes are from different class loaders, they are not considered the same class and so the extension cannot be found.

I guess you use `withPluginClassPath`. Iirc, this can lead to such problems in more sophisticated situations like yours.  
You should consider to instead publish the plugin to some file-based local repository (but not `mavenLocal()` which is broken by design), and then consume your plugin from that repository in your tests. This should hopefully resolve the class loader issue.