Mixin breakpoints don't work when IDEA Android plugin is enabled #2019
Description
Minecraft Development for IntelliJ plugin version
2023.1-1.6.4
IntelliJ version
2023.1.1 (#IC-231.8770.65)
Operating System
Windows 10
Target platform
Mixins
Description of the bug
When IDEA's Android plugin is enabled, (which comes bundled with IDEA and is enabled by default,) breakpoints in mixins don't get hit. This is likely to be the underlying cause of #1999. Once the plugin is disabled, breakpoints work.
This is a regression. I have tested the following versions with the Android plugin enabled, placing a breakpoint in fabric-example-mod's example mixin:
| IDEA version | Minecraft Dev version | Result |
|---|---|---|
| 2021.1.3 (#IC-211.7628.21) | 2021.1-1.5.19 | ✅ Breakpoint gets hit |
| 2022.3.2 (#IC-223.8617.56) | 2022.3-1.6.4 | ❌ Breakpoint is ignored |
| 2023.1.1 (#IC-231.8770.65) | 2023.1-1.6.4 | ❌ Breakpoint is ignored |
Code analysis
It seems the Android plugin's PositionManager is taking priority over the Mixin plugin's when the locationsOfLine call is dispatched from LineBreakpoint#createRequestForPreparedClass. MixinPositionManager#locationsOfLine thus never gets called.
(The first element of myPositionManagers shown in this screenshot is AndroidPositionManager, the second is MixinPositionManager.)
