Micromixin-remapper is an extension to the stianloader-remapper API to provide the ability of remapping Mixins. Do note however that micromixin-remapper takes the liberty of remapping mixin classes the way it chooses - which is why behaviour may change compared to tiny-remapper's mixin extension or the official mixin annotation processor (note that unlike the annotation processor, this library is not capable of generating refmaps. As such, the remapping process is much more similar to tiny-remapper).
The behaviour of the remapper is done on a "best-fit" basis - that is if it cannot find a best fit, it will fail in a fail-fast manner. Such behaviour ensures predictability and lowers user frustration in the long run. This best fit is usually a what I find most logical as a user, though within reason as it's sometimes difficult to impossible to replicate this most logical approach.
This project is available under https://stianloader.org/maven/
as with the groupId of org.stianloader and an artifactId of micromixin-remapper.
Please note that the versions in the maven repository will differ from those declared
in the pom of the source code. It's best to look up the version numbers in the index
of the repository: https://stianloader.org/maven/org/stianloader/micromixin-remapper/
The goal of micromixin-remapper is to support everything that is supported by micromixin-transformer. However, at this point in time micromixin-remapper only supports the pure fundementals for the mixin specification. This suffices to remap a large quantity of mixins, and fully supports remapping all known mixins used in galimulator modding. That being said, it may fail for more exotic usecases. If someone is willing enough to report a bug, the missing featureset can be amended though.
Micromixin-remapper is rather likely to struggle with target selectors (often the
method element of a mixin handler annotation or the @Desc annotation) when a
single selector would apply to multiple targets. The evident workaround is to
only target a single method/field/instruction/etc. If it fails due to this issue
it will throw an IllegalMixinException noting what steps can be taken and why the
issue occured.
Micromixin-remapper is designed to crash in a fail-fast manner if it encounters
unknown features, but this behaviour can be overriden through
MicromixinRemapper#logUnimplementedFeature(String). That being said, if it
encounters features that are known to be extremely difficult to impossible to
implement faithfully, micromixin-remapper can crash with an IllegalMixinException.
Do note however, that while such behaviour might be intended, it can be changed
with appropriate insight in the problem at hand.