When registering a custom `TypeTransformer` w the `TypeEngin

Question

When registering a custom `TypeTransformer` w the `TypeEngine` does the module need to be explicitly imported by one of the files containing workflows or tasks in order for it to be picked up Based on the example of the `NumpyArrayTransformer` it seemed like it but not sure where that needs to be declared

Rahul Mehta · Answer

For context I was attempting to add a transformer to support `collections abc Sequence T ` as a valid type and was previously hitting this error ```ValueError Generic Type lt class collections abc Sequence gt not supported currently in Flytekit ```

Yee · Answer

yes it does because we figured if people were writing a type transformer they d also be writing a type

Yee · Answer

and when the user imported the type then that would trigger the transformer loading as well

Yee · Answer

but this doesn t include the case where the type and the transformer are in different libraries

Yee · Answer

to mitigate this issue you can use flytekite s auto loading plugin behavior

Yee · Answer

that is if you add this <https github com flyteorg flytekit blob master plugins flytekit data fsspec setup py L45|entrypoint> to your setup py then any `import flytekit` would trigger it as well

Yee · Answer

does that make sense

Rahul Mehta · Answer

Yep that makes sense we ll need to figure out a slightly different way to do that since we re using Bazel

Rahul Mehta · Answer

cc < Ketan kumare3 > < Eduardo Apolinario eapolinario > based on our earlier discussion

Eduardo Apolinario (eapolinario) · Answer

Great thank you We re going to prioritize this for the upcoming release