Izumi Project


Izumi (*jp. 泉水, spring*) is an ecosystem of independent libraries and frameworks allowing you to significantly increase productivity of your Scala development.

including the following components:

  1. distage – Compile-time safe, transparent and debuggable Dependency Injection framework for pure FP Scala,
  2. distage-testkit – Hyper-pragmatic pure FP Test framework. Shares heavy resources globally across all test suites; lets you easily swap implementations of component; uses your effect type for parallelism.
  3. distage-framework-docker – A distage extension for using docker containers in tests or for local application runs, comes with example Postgres, Cassandra, Kafka & DynamoDB containers.
  4. LogStage – Automatic structural logs from Scala string interpolations,
  5. BIO - A typeclass hierarchy for tagless final style with Bifunctor and Trifunctor effect types. Focused on ergonomics and ease of use with zero boilerplate.
  6. izumi-reflect (moved to zio/izumi-reflect) - Portable, lightweight and kind-polymorphic alternative to scala-reflect’s Typetag for Scala, Scala.js, Scala Native and (soon) Dotty
  7. IdeaLingua (moved to 7mind/idealingua-v1) – API Definition, Data Modeling and RPC language, optimized for fast prototyping – like gRPC or Swagger, but with a human face. Generates RPC servers and clients for Go, TypeScript, C# and Scala,
  8. Opinionated SBT plugins (moved to 7mind/sbtgen) – Reduces verbosity of SBT builds and introduces new features – inter-project shared test scopes and BOM plugins (from Maven)
  9. Percept-Plan-Execute-Repeat (PPER) – A pattern that enables modeling very complex domains and orchestrate deadly complex processes a lot easier than you’re used to.


To use, add the following into build.sbt,

libraryDependencies ++= Seq(
  // distage core library
  "io.7mind.izumi" %% "distage-core" % "1.0.9-SNAPSHOT",
  // distage-testkit for ScalaTest
  "io.7mind.izumi" %% "distage-testkit-scalatest" % "1.0.9-SNAPSHOT" % Test,
  // distage-framework: Roles, Entrypoints, Effect modules
  "io.7mind.izumi" %% "distage-framework" % "1.0.9-SNAPSHOT",
  // Typesafe Config support
  "io.7mind.izumi" %% "distage-extension-config" % "1.0.9-SNAPSHOT",
  // Classpath discovery support
  "io.7mind.izumi" %% "distage-extension-plugins" % "1.0.9-SNAPSHOT",
  // LogStage integration with DIStage
  "io.7mind.izumi" %% "distage-extension-logstage" % "1.0.9-SNAPSHOT",

  // LogStage core library
  "io.7mind.izumi" %% "logstage-core" % "1.0.9-SNAPSHOT",
  // Write logs as JSON
  "io.7mind.izumi" %% "logstage-rendering-circe " % "1.0.9-SNAPSHOT",
  // Route Slf4J logs to LogStage
  "io.7mind.izumi" %% "logstage-adapter-slf4j " % "1.0.9-SNAPSHOT",
  // Route LogStage logs to Slf4J
  "io.7mind.izumi" %% "logstage-sink-slf4j " % "1.0.9-SNAPSHOT",




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