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paichen@chens-Mac-mini PluginDevEnv % java -javaagent:PaperShelled-0.0.1.jar -jar purpur-paperclip-1.18.1-R0.1-SNAPSHOT-reobf.jar --nogui
[14:18:59 INFO]: [PaperShelled] PaperShelled version: 0.0.1 (Thu, Sep 16, 2021 05:57:56 AM GMT)
[14:18:59 INFO]: [PaperShelled] You can get the latest updates from: https://github.com/Apisium/PaperShelled
[14:18:59 INFO]: [PaperShelled:mixin] SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/Volumes/PiExDisk/Code/Minecraft/Server/PluginDevEnv/PaperShelled-0.0.1.jar Service=PaperShelled Env=SERVER
[14:18:59 INFO]: [PaperShelled:mixin] Attempting to load Hot-Swap agent
Starting org.bukkit.craftbukkit.Main
java.lang.NullPointerException
at java.base/java.util.Objects.requireNonNull(Objects.java:208)
at cn.apisium.papershelled.PaperShelledAgent$Transformer.transform(PaperShelledAgent.java:45)
at java.instrument/java.lang.instrument.ClassFileTransformer.transform(ClassFileTransformer.java:244)
at java.instrument/sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at java.instrument/sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:541)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1012)
at java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:150)
at java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:524)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:427)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:712)
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:420)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:467)
at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:38)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "ServerMain" java.lang.NoClassDefFoundError: cn/apisium/papershelled/PaperShelledAgent
at org.bukkit.craftbukkit.Main.main(Unknown Source)
at io.papermc.paperclip.Paperclip.lambda$main$0(Paperclip.java:42)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.lang.ClassNotFoundException: cn.apisium.papershelled.PaperShelledAgent
at java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:445)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:587)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
... 3 more
paichen@chens-Mac-mini PluginDevEnv %

version 1.0.0 in jitpack is using fat jar with dependencies

I write a PaperShelled plugin to try it out, but I found that adding the @Dependency annotation for the Bukkit plugin I need to modify causes the PaperShelled plugin to fail to load, it shows the message Could not load 'myplugin.jar' without further information, which took me a lot of time to figure out. :(

However, if I don't depend on that Bukkit plugin, the PaperShelled plugin will show a "target class not found" error during loading (when using Mixin injection). It seems that the PaperShelled plugin is loaded much earlier than the Bukkit plugin, causing it to not find the classes from the Bukkit plugin.

This is my first time using Mixin, and I don't have any related knowledge, so I wanted to ask if there is a suitable solution. Thank you.