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Functional programming toolkit aimed at taming the complexity of Tagless Final approach.

Quick Start

see the docs on the microsite

see the examples in the examples directory

To use the whole utils pack just add to your build.sbt:

libraryDependencies += "tf.tofu" %% "tofu" % "latest version in badge"

Of course, you can also specify an exact list of tofu modules that you want to add to your dependencies (used in place of "tofu"):

  • tofu-kernel for core independent utils
    • tofu-kernel-cats-mtl for interop between tofu-kernel and Cats MTL
  • tofu-core-* for core utils (replace suffix * with ce2 or ce3 depends on which cats-effect version you use)
  • tofu-core-higher-kind for higher kinded utils
  • tofu-concurrent for concurrent utils
  • tofu-config for config utils
  • tofu-data for data utils
  • tofu-derivation for derivation utils and derevo annotations
  • tofu-doobie for Doobie utils
  • tofu-enums for Enumeratum utils
  • tofu-env for Env (a variation of a Reader Monad based on Monix Task)
  • tofu-fs2-interop for interop with fs2
  • tofu-streams for streaming utils
  • tofu-logging for the whole set of logging utils (derivation, layout, structured, util, interop)
    • tofu-logging-derivation for logging derivation only
    • tofu-logging-layout for logging layout only
    • tofu-logging-structured for logging structured only
    • tofu-logging-util for logging util only
    • tofu-logging-refined for interop between tofu-logging and Refined
    • tofu-logging-shapeless for interop between tofu-logging and Shapeless tag
    • tofu-logging-log4cats for interop with Log4Cats
  • tofu-memo for caching utils
  • tofu-observable for monix.reactive.Observable utils
  • tofu-zio-interop for interop with ZIO (core, logging)
    • tofu-zio-core for ZIO instances only
    • tofu-zio-logging for ZIO logging only


Proud user of ToFu? Feel free to add your company!

Raiffeisen Bank Russia

Risk Management Solutions


Please note we use the following labels for automated release descriptions:

  • chore if your PR does not change any types and runtime semantics
  • fix if your PR merely fixes incorrect behavior


We have an automated check for style conformance. You can run sbt checkfmt before PR. If you have any trouble during this check, just run sbt fmt and commit again.


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