diff --git a/build.sc b/build.sc
new file mode 100644
index 0000000..8a81445
--- /dev/null
+++ b/build.sc
@@ -0,0 +1,121 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.fiftyforms.{build => ff}, ff.support._
+
+object core extends PureCrossSbtModule
+
+object codecs extends PureCrossSbtModule {
+  def ivyDeps = Agg(Deps.zioJson)
+  def moduleDeps = Seq(core, ff.tapir)
+}
+
+val coreCodecs = codecs
+
+object endpoints extends PureCrossSbtModule {
+  def moduleDeps = Seq(core, codecs, ff.tapir)
+}
+
+val coreEndpoints = endpoints
+
+object domain extends Module {
+  trait DomainModule extends Module {
+    object shared extends Module {
+      object model extends PureCrossModule {
+        def moduleDeps = Seq(core)
+        def ivyDeps = Agg(Deps.zioPrelude)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps = Seq(model, coreCodecs)
+        def ivyDeps = Agg(Deps.zioJson)
+      }
+    }
+
+    trait CommonProjects extends Module {
+      object model extends PureCrossModule {
+        def ivyDeps = Agg(Deps.zioPrelude)
+        def moduleDeps = Seq(shared.model, core)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps =
+          Seq(coreCodecs, model, shared.model, shared.codecs, ff.tapir)
+      }
+      object endpoints extends PureCrossModule {
+        def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson)
+        def moduleDeps = Seq(model, codecs, coreEndpoints)
+      }
+      object client extends CommonJSModule {
+        def moduleDeps = Seq(endpoints.js)
+      }
+      object components extends CommonJSModule {
+        def ivyDeps = Agg(
+          Deps.laminar,
+          Deps.laminextCore,
+          Deps.laminextUI,
+          Deps.laminextTailwind,
+          Deps.laminextValidationCore
+        )
+        def moduleDeps = Seq(ff.ui)
+      }
+    }
+
+    object query extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(repo, query.endpoints.jvm)
+      }
+      object repo extends CommonModule {
+        def ivyDeps = Agg(Deps.zio)
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.mongo)
+      }
+      object projection extends CommonModule {
+        def moduleDeps = Seq(repo, ff.akkaPersistence)
+      }
+    }
+
+    object command extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(entity, command.endpoints.jvm)
+      }
+      object entity extends CommonModule {
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.akkaPersistence)
+      }
+    }
+  }
+
+  object proof extends DomainModule
+  object parameters extends DomainModule
+  object users extends DomainModule
+}
+
+object server extends CommonModule {
+  def moduleDeps = Seq(
+    core.jvm,
+    domain.parameters.query.api,
+    domain.parameters.command.api,
+    domain.users.query.api,
+    domain.users.command.api,
+    domain.proof.query.api,
+    domain.proof.command.api,
+    domain.proof.query.projection,
+    domain.proof.command.entity,
+    endpoints.jvm
+  )
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioConfig,
+    Deps.zioConfigTypesafe,
+    Deps.zioConfigMagnolia,
+    Deps.zioLoggingSlf4j,
+    Deps.zioInteropCats,
+    Deps.tapirCore,
+    Deps.tapirZIO,
+    Deps.tapirZIOJson,
+    Deps.tapirZIOHttp4sServer,
+    Deps.http4sBlazeServer,
+    Deps.logbackClassic,
+    Deps.http4sPac4J,
+    Deps.pac4jOIDC,
+    ivy"mysql:mysql-connector-java:8.0.28"
+  )
+}

diff --git a/build.sc b/build.sc
new file mode 100644
index 0000000..8a81445
--- /dev/null
+++ b/build.sc
@@ -0,0 +1,121 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.fiftyforms.{build => ff}, ff.support._
+
+object core extends PureCrossSbtModule
+
+object codecs extends PureCrossSbtModule {
+  def ivyDeps = Agg(Deps.zioJson)
+  def moduleDeps = Seq(core, ff.tapir)
+}
+
+val coreCodecs = codecs
+
+object endpoints extends PureCrossSbtModule {
+  def moduleDeps = Seq(core, codecs, ff.tapir)
+}
+
+val coreEndpoints = endpoints
+
+object domain extends Module {
+  trait DomainModule extends Module {
+    object shared extends Module {
+      object model extends PureCrossModule {
+        def moduleDeps = Seq(core)
+        def ivyDeps = Agg(Deps.zioPrelude)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps = Seq(model, coreCodecs)
+        def ivyDeps = Agg(Deps.zioJson)
+      }
+    }
+
+    trait CommonProjects extends Module {
+      object model extends PureCrossModule {
+        def ivyDeps = Agg(Deps.zioPrelude)
+        def moduleDeps = Seq(shared.model, core)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps =
+          Seq(coreCodecs, model, shared.model, shared.codecs, ff.tapir)
+      }
+      object endpoints extends PureCrossModule {
+        def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson)
+        def moduleDeps = Seq(model, codecs, coreEndpoints)
+      }
+      object client extends CommonJSModule {
+        def moduleDeps = Seq(endpoints.js)
+      }
+      object components extends CommonJSModule {
+        def ivyDeps = Agg(
+          Deps.laminar,
+          Deps.laminextCore,
+          Deps.laminextUI,
+          Deps.laminextTailwind,
+          Deps.laminextValidationCore
+        )
+        def moduleDeps = Seq(ff.ui)
+      }
+    }
+
+    object query extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(repo, query.endpoints.jvm)
+      }
+      object repo extends CommonModule {
+        def ivyDeps = Agg(Deps.zio)
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.mongo)
+      }
+      object projection extends CommonModule {
+        def moduleDeps = Seq(repo, ff.akkaPersistence)
+      }
+    }
+
+    object command extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(entity, command.endpoints.jvm)
+      }
+      object entity extends CommonModule {
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.akkaPersistence)
+      }
+    }
+  }
+
+  object proof extends DomainModule
+  object parameters extends DomainModule
+  object users extends DomainModule
+}
+
+object server extends CommonModule {
+  def moduleDeps = Seq(
+    core.jvm,
+    domain.parameters.query.api,
+    domain.parameters.command.api,
+    domain.users.query.api,
+    domain.users.command.api,
+    domain.proof.query.api,
+    domain.proof.command.api,
+    domain.proof.query.projection,
+    domain.proof.command.entity,
+    endpoints.jvm
+  )
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioConfig,
+    Deps.zioConfigTypesafe,
+    Deps.zioConfigMagnolia,
+    Deps.zioLoggingSlf4j,
+    Deps.zioInteropCats,
+    Deps.tapirCore,
+    Deps.tapirZIO,
+    Deps.tapirZIOJson,
+    Deps.tapirZIOHttp4sServer,
+    Deps.http4sBlazeServer,
+    Deps.logbackClassic,
+    Deps.http4sPac4J,
+    Deps.pac4jOIDC,
+    ivy"mysql:mysql-connector-java:8.0.28"
+  )
+}
diff --git a/fiftyforms/bom.sc b/fiftyforms/bom.sc
new file mode 100644
index 0000000..e9266b8
--- /dev/null
+++ b/fiftyforms/bom.sc
@@ -0,0 +1,227 @@
+import mill._, scalalib._
+
+object IWMaterials {
+
+  object Versions {
+    val akka = "2.6.16"
+    val akkaHttp = "10.2.4"
+    val cats = "2.7.0"
+    val elastic4s = "7.12.2"
+    val http4s = "0.23.10"
+    val http4sPac4J = "4.0.0"
+    val laminar = "0.14.2"
+    val laminext = laminar
+    val logbackClassic = "1.2.10"
+    val pac4j = "5.2.0"
+    val play = "2.8.8"
+    val playJson = "2.9.2"
+    val scalaTest = "3.2.9"
+    val slick = "3.3.3"
+    val sttpClient = "3.5.0"
+    val tapir = "0.20.1"
+    val urlDsl = "0.4.0"
+    val waypoint = "0.5.0"
+    val zio = "2.0.0-RC2"
+    val zioConfig = "3.0.0-RC2"
+    val zioInteropCats = "3.3.0-RC2"
+    val zioJson = "0.3.0-RC3"
+    val zioLogging = "2.0.0-RC5"
+    val zioPrelude = "1.0.0-RC10"
+    val zioZMX = "0.0.11"
+  }
+
+  object Deps extends AkkaLibs with SlickLibs {
+    import IWMaterials.{Versions => V}
+
+    val zioOrg = "dev.zio"
+
+    def zioLib(name: String, version: String): Dep =
+      ivy"$zioOrg::zio-$name::$version"
+
+    lazy val zio: Dep = ivy"$zioOrg::zio:${V.zio}"
+
+    lazy val zioTest: Dep = zioLib("test", V.zio)
+    lazy val zioTestSbt: Dep = zioLib("test", V.zio)
+
+    lazy val zioConfig: Dep = zioLib("config", V.zioConfig)
+    lazy val zioConfigTypesafe: Dep =
+      zioLib("config-typesafe", V.zioConfig)
+    lazy val zioConfigMagnolia: Dep =
+      zioLib("config-magnolia", V.zioConfig)
+
+    lazy val zioJson: Dep = zioLib("json", V.zioJson)
+    lazy val zioLogging: Dep = zioLib("logging", V.zioLogging)
+    lazy val zioLoggingSlf4j: Dep =
+      zioLib("logging-slf4j", V.zioLogging)
+    lazy val zioPrelude: Dep = zioLib("prelude", V.zioPrelude)
+    lazy val zioStreams: Dep = zioLib("streams", V.zio)
+    lazy val zioZMX: Dep = zioLib("zmx", V.zioZMX)
+    lazy val zioInteropCats: Dep =
+      zioLib("interop-cats", V.zioInteropCats)
+
+    /* What is the equivalent? ZIOModule with prepared test config?
+  def useZIO(testConf: Configuration*): Agg[Dep] = Agg(
+    zio,
+    zioTest,
+    zioTestSbt,
+    testFrameworks += new TestFramework("zio.test.sbt.ZTestFramework")
+   )
+     */
+
+    /*
+  def useZIOAll(testConf: Configuration*): Seq[Def.Setting[_]] =
+    useZIO(testConf: _*) ++ Seq(
+      zioStreams,
+      zioConfig,
+      zioConfigTypesafe,
+      zioConfigMagnolia,
+      zioJson,
+      zioZMX,
+      zioLogging,
+      zioPrelude
+   )
+     */
+
+    private val tapirOrg = "com.softwaremill.sttp.tapir"
+    def tapirLib(name: String): Dep =
+      ivy"${tapirOrg}::tapir-$name::${V.tapir}"
+
+    lazy val tapirCore: Dep = tapirLib("core")
+    lazy val tapirZIO: Dep = tapirLib("zio")
+    lazy val tapirZIOJson: Dep = tapirLib("json-zio")
+    lazy val tapirSttpClient: Dep = tapirLib("sttp-client")
+    lazy val tapirCats: Dep = tapirLib("cats")
+    lazy val tapirZIOHttp4sServer: Dep = tapirLib("zio-http4s-server")
+
+    private val sttpClientOrg = "com.softwaremill.sttp.client3"
+    def sttpClientLib(name: String): Dep =
+      ivy"${sttpClientOrg}::${name}:${V.sttpClient}"
+
+    lazy val sttpClientCore: Dep = sttpClientLib("core")
+
+    lazy val http4sBlazeServer: Dep =
+      ivy"org.http4s::http4s-blaze-server:${V.http4s}"
+
+    lazy val http4sPac4J: Dep =
+      ivy"org.pac4j::http4s-pac4j:${V.http4sPac4J}"
+    lazy val pac4jOIDC: Dep =
+      ivy"org.pac4j:pac4j-oidc:${V.pac4j}"
+
+    lazy val scalaTest: Dep =
+      ivy"org.scalatest::scalatest:${V.scalaTest}"
+    lazy val scalaTestPlusScalacheck: Dep =
+      ivy"org.scalatestplus::scalacheck-1-15:3.2.9.0"
+    lazy val playScalaTest: Dep =
+      ivy"org.scalatestplus.play::scalatestplus-play:5.1.0"
+
+    private val playOrg = "com.typesafe.play"
+    lazy val playMailer: Dep = ivy"${playOrg}::play-mailer:8.0.1"
+    lazy val playServer: Dep = ivy"${playOrg}::play-server:${V.play}"
+    lazy val playAkkaServer: Dep =
+      ivy"${playOrg}::play-akka-http-server:${V.play}"
+    lazy val play: Dep = ivy"${playOrg}::play:${V.play}"
+    lazy val playAhcWs: Dep = ivy"${playOrg}::play-ahc-ws:${V.play}"
+    lazy val playJson: Dep = ivy"${playOrg}::play-json:${V.playJson}"
+
+    private val elastic4sOrg = "com.sksamuel.elastic4s"
+    lazy val useElastic4S: Agg[Dep] = Agg(
+      ivy"${elastic4sOrg}::elastic4s-core:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-client-akka:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-http-streams:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-json-play:${V.elastic4s}"
+    )
+
+    lazy val laminar: Dep = ivy"com.raquo::laminar::${V.laminar}"
+
+    private def laminext(name: String): Dep =
+      ivy"io.laminext::$name::${V.laminar}"
+
+    lazy val laminextCore: Dep = laminext("core")
+    lazy val laminextTailwind: Dep = laminext("tailwind")
+    lazy val laminextFetch: Dep = laminext("fetch")
+    lazy val laminextValidationCore: Dep = laminext("validation-core")
+    lazy val laminextUI: Dep = laminext("ui")
+
+    lazy val waypoint: Dep =
+      ivy"com.raquo::waypoint::${V.waypoint}"
+
+    lazy val urlDsl: Dep =
+      ivy"be.doeraene::url-dsl::${V.urlDsl}"
+
+    lazy val scalaJavaTime: Dep =
+      ivy"io.github.cquiroz::scala-java-time::2.3.0"
+
+    lazy val scalaJavaLocales: Dep =
+      ivy"io.github.cquiroz::scala-java-locales::1.2.1"
+
+    lazy val logbackClassic: Dep =
+      ivy"ch.qos.logback:logback-classic:${V.logbackClassic}"
+  }
+
+  trait AkkaLibs {
+
+    self: SlickLibs =>
+
+    object akka {
+      val V = Versions.akka
+      val tOrg = "com.typesafe.akka"
+      val lOrg = "com.lightbend.akka"
+
+      def akkaMod(name: String): Dep =
+        ivy"$tOrg::akka-$name:$V"
+
+      lazy val actor: Dep = akkaMod("actor")
+      lazy val actorTyped: Dep = akkaMod("actor-typed")
+      lazy val stream: Dep = akkaMod("stream")
+      lazy val persistence: Dep = akkaMod("persistence-typed")
+      lazy val persistenceQuery: Dep = akkaMod("persistence-query")
+      lazy val persistenceJdbc: Dep =
+        ivy"$lOrg::akka-persistence-jdbc:5.0.4"
+      val persistenceTestKit: Dep = ivy"$tOrg::akka-persistence-testkit:$V"
+
+      object http {
+        val V = Versions.akkaHttp
+
+        lazy val http: Dep = ivy"$tOrg::akka-http:$V"
+        lazy val sprayJson: Dep = ivy"$tOrg::akka-http-spray-json:$V"
+
+      }
+
+      object projection {
+        val V = "1.2.2"
+
+        lazy val core: Dep =
+          ivy"$lOrg::akka-projection-core:$V"
+        lazy val eventsourced: Dep =
+          ivy"$lOrg::akka-projection-eventsourced:$V"
+        lazy val slick: Dep =
+          ivy"$lOrg::akka-projection-slick:$V"
+        lazy val jdbc: Dep =
+          ivy"$lOrg::akka-projection-jdbc:$V"
+      }
+
+      object profiles {
+        // TODO: deal with cross-version for Scala3 (for3Use2_13)
+        lazy val eventsourcedJdbcProjection: Agg[Dep] = Agg(
+          persistenceQuery,
+          projection.core,
+          projection.eventsourced,
+          projection.slick,
+          persistenceJdbc
+        ) ++ slick.default
+      }
+    }
+  }
+
+  trait SlickLibs {
+    object slick {
+      val V = IWMaterials.Versions.slick
+      val org = "com.typesafe.slick"
+
+      lazy val slick: Dep = ivy"$org::slick:$V"
+      lazy val hikaricp: Dep = ivy"$org::slick-hikaricp:$V"
+      lazy val default: Agg[Dep] = Agg(slick, hikaricp)
+    }
+  }
+
+}

diff --git a/build.sc b/build.sc
new file mode 100644
index 0000000..8a81445
--- /dev/null
+++ b/build.sc
@@ -0,0 +1,121 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.fiftyforms.{build => ff}, ff.support._
+
+object core extends PureCrossSbtModule
+
+object codecs extends PureCrossSbtModule {
+  def ivyDeps = Agg(Deps.zioJson)
+  def moduleDeps = Seq(core, ff.tapir)
+}
+
+val coreCodecs = codecs
+
+object endpoints extends PureCrossSbtModule {
+  def moduleDeps = Seq(core, codecs, ff.tapir)
+}
+
+val coreEndpoints = endpoints
+
+object domain extends Module {
+  trait DomainModule extends Module {
+    object shared extends Module {
+      object model extends PureCrossModule {
+        def moduleDeps = Seq(core)
+        def ivyDeps = Agg(Deps.zioPrelude)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps = Seq(model, coreCodecs)
+        def ivyDeps = Agg(Deps.zioJson)
+      }
+    }
+
+    trait CommonProjects extends Module {
+      object model extends PureCrossModule {
+        def ivyDeps = Agg(Deps.zioPrelude)
+        def moduleDeps = Seq(shared.model, core)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps =
+          Seq(coreCodecs, model, shared.model, shared.codecs, ff.tapir)
+      }
+      object endpoints extends PureCrossModule {
+        def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson)
+        def moduleDeps = Seq(model, codecs, coreEndpoints)
+      }
+      object client extends CommonJSModule {
+        def moduleDeps = Seq(endpoints.js)
+      }
+      object components extends CommonJSModule {
+        def ivyDeps = Agg(
+          Deps.laminar,
+          Deps.laminextCore,
+          Deps.laminextUI,
+          Deps.laminextTailwind,
+          Deps.laminextValidationCore
+        )
+        def moduleDeps = Seq(ff.ui)
+      }
+    }
+
+    object query extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(repo, query.endpoints.jvm)
+      }
+      object repo extends CommonModule {
+        def ivyDeps = Agg(Deps.zio)
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.mongo)
+      }
+      object projection extends CommonModule {
+        def moduleDeps = Seq(repo, ff.akkaPersistence)
+      }
+    }
+
+    object command extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(entity, command.endpoints.jvm)
+      }
+      object entity extends CommonModule {
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.akkaPersistence)
+      }
+    }
+  }
+
+  object proof extends DomainModule
+  object parameters extends DomainModule
+  object users extends DomainModule
+}
+
+object server extends CommonModule {
+  def moduleDeps = Seq(
+    core.jvm,
+    domain.parameters.query.api,
+    domain.parameters.command.api,
+    domain.users.query.api,
+    domain.users.command.api,
+    domain.proof.query.api,
+    domain.proof.command.api,
+    domain.proof.query.projection,
+    domain.proof.command.entity,
+    endpoints.jvm
+  )
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioConfig,
+    Deps.zioConfigTypesafe,
+    Deps.zioConfigMagnolia,
+    Deps.zioLoggingSlf4j,
+    Deps.zioInteropCats,
+    Deps.tapirCore,
+    Deps.tapirZIO,
+    Deps.tapirZIOJson,
+    Deps.tapirZIOHttp4sServer,
+    Deps.http4sBlazeServer,
+    Deps.logbackClassic,
+    Deps.http4sPac4J,
+    Deps.pac4jOIDC,
+    ivy"mysql:mysql-connector-java:8.0.28"
+  )
+}
diff --git a/fiftyforms/bom.sc b/fiftyforms/bom.sc
new file mode 100644
index 0000000..e9266b8
--- /dev/null
+++ b/fiftyforms/bom.sc
@@ -0,0 +1,227 @@
+import mill._, scalalib._
+
+object IWMaterials {
+
+  object Versions {
+    val akka = "2.6.16"
+    val akkaHttp = "10.2.4"
+    val cats = "2.7.0"
+    val elastic4s = "7.12.2"
+    val http4s = "0.23.10"
+    val http4sPac4J = "4.0.0"
+    val laminar = "0.14.2"
+    val laminext = laminar
+    val logbackClassic = "1.2.10"
+    val pac4j = "5.2.0"
+    val play = "2.8.8"
+    val playJson = "2.9.2"
+    val scalaTest = "3.2.9"
+    val slick = "3.3.3"
+    val sttpClient = "3.5.0"
+    val tapir = "0.20.1"
+    val urlDsl = "0.4.0"
+    val waypoint = "0.5.0"
+    val zio = "2.0.0-RC2"
+    val zioConfig = "3.0.0-RC2"
+    val zioInteropCats = "3.3.0-RC2"
+    val zioJson = "0.3.0-RC3"
+    val zioLogging = "2.0.0-RC5"
+    val zioPrelude = "1.0.0-RC10"
+    val zioZMX = "0.0.11"
+  }
+
+  object Deps extends AkkaLibs with SlickLibs {
+    import IWMaterials.{Versions => V}
+
+    val zioOrg = "dev.zio"
+
+    def zioLib(name: String, version: String): Dep =
+      ivy"$zioOrg::zio-$name::$version"
+
+    lazy val zio: Dep = ivy"$zioOrg::zio:${V.zio}"
+
+    lazy val zioTest: Dep = zioLib("test", V.zio)
+    lazy val zioTestSbt: Dep = zioLib("test", V.zio)
+
+    lazy val zioConfig: Dep = zioLib("config", V.zioConfig)
+    lazy val zioConfigTypesafe: Dep =
+      zioLib("config-typesafe", V.zioConfig)
+    lazy val zioConfigMagnolia: Dep =
+      zioLib("config-magnolia", V.zioConfig)
+
+    lazy val zioJson: Dep = zioLib("json", V.zioJson)
+    lazy val zioLogging: Dep = zioLib("logging", V.zioLogging)
+    lazy val zioLoggingSlf4j: Dep =
+      zioLib("logging-slf4j", V.zioLogging)
+    lazy val zioPrelude: Dep = zioLib("prelude", V.zioPrelude)
+    lazy val zioStreams: Dep = zioLib("streams", V.zio)
+    lazy val zioZMX: Dep = zioLib("zmx", V.zioZMX)
+    lazy val zioInteropCats: Dep =
+      zioLib("interop-cats", V.zioInteropCats)
+
+    /* What is the equivalent? ZIOModule with prepared test config?
+  def useZIO(testConf: Configuration*): Agg[Dep] = Agg(
+    zio,
+    zioTest,
+    zioTestSbt,
+    testFrameworks += new TestFramework("zio.test.sbt.ZTestFramework")
+   )
+     */
+
+    /*
+  def useZIOAll(testConf: Configuration*): Seq[Def.Setting[_]] =
+    useZIO(testConf: _*) ++ Seq(
+      zioStreams,
+      zioConfig,
+      zioConfigTypesafe,
+      zioConfigMagnolia,
+      zioJson,
+      zioZMX,
+      zioLogging,
+      zioPrelude
+   )
+     */
+
+    private val tapirOrg = "com.softwaremill.sttp.tapir"
+    def tapirLib(name: String): Dep =
+      ivy"${tapirOrg}::tapir-$name::${V.tapir}"
+
+    lazy val tapirCore: Dep = tapirLib("core")
+    lazy val tapirZIO: Dep = tapirLib("zio")
+    lazy val tapirZIOJson: Dep = tapirLib("json-zio")
+    lazy val tapirSttpClient: Dep = tapirLib("sttp-client")
+    lazy val tapirCats: Dep = tapirLib("cats")
+    lazy val tapirZIOHttp4sServer: Dep = tapirLib("zio-http4s-server")
+
+    private val sttpClientOrg = "com.softwaremill.sttp.client3"
+    def sttpClientLib(name: String): Dep =
+      ivy"${sttpClientOrg}::${name}:${V.sttpClient}"
+
+    lazy val sttpClientCore: Dep = sttpClientLib("core")
+
+    lazy val http4sBlazeServer: Dep =
+      ivy"org.http4s::http4s-blaze-server:${V.http4s}"
+
+    lazy val http4sPac4J: Dep =
+      ivy"org.pac4j::http4s-pac4j:${V.http4sPac4J}"
+    lazy val pac4jOIDC: Dep =
+      ivy"org.pac4j:pac4j-oidc:${V.pac4j}"
+
+    lazy val scalaTest: Dep =
+      ivy"org.scalatest::scalatest:${V.scalaTest}"
+    lazy val scalaTestPlusScalacheck: Dep =
+      ivy"org.scalatestplus::scalacheck-1-15:3.2.9.0"
+    lazy val playScalaTest: Dep =
+      ivy"org.scalatestplus.play::scalatestplus-play:5.1.0"
+
+    private val playOrg = "com.typesafe.play"
+    lazy val playMailer: Dep = ivy"${playOrg}::play-mailer:8.0.1"
+    lazy val playServer: Dep = ivy"${playOrg}::play-server:${V.play}"
+    lazy val playAkkaServer: Dep =
+      ivy"${playOrg}::play-akka-http-server:${V.play}"
+    lazy val play: Dep = ivy"${playOrg}::play:${V.play}"
+    lazy val playAhcWs: Dep = ivy"${playOrg}::play-ahc-ws:${V.play}"
+    lazy val playJson: Dep = ivy"${playOrg}::play-json:${V.playJson}"
+
+    private val elastic4sOrg = "com.sksamuel.elastic4s"
+    lazy val useElastic4S: Agg[Dep] = Agg(
+      ivy"${elastic4sOrg}::elastic4s-core:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-client-akka:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-http-streams:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-json-play:${V.elastic4s}"
+    )
+
+    lazy val laminar: Dep = ivy"com.raquo::laminar::${V.laminar}"
+
+    private def laminext(name: String): Dep =
+      ivy"io.laminext::$name::${V.laminar}"
+
+    lazy val laminextCore: Dep = laminext("core")
+    lazy val laminextTailwind: Dep = laminext("tailwind")
+    lazy val laminextFetch: Dep = laminext("fetch")
+    lazy val laminextValidationCore: Dep = laminext("validation-core")
+    lazy val laminextUI: Dep = laminext("ui")
+
+    lazy val waypoint: Dep =
+      ivy"com.raquo::waypoint::${V.waypoint}"
+
+    lazy val urlDsl: Dep =
+      ivy"be.doeraene::url-dsl::${V.urlDsl}"
+
+    lazy val scalaJavaTime: Dep =
+      ivy"io.github.cquiroz::scala-java-time::2.3.0"
+
+    lazy val scalaJavaLocales: Dep =
+      ivy"io.github.cquiroz::scala-java-locales::1.2.1"
+
+    lazy val logbackClassic: Dep =
+      ivy"ch.qos.logback:logback-classic:${V.logbackClassic}"
+  }
+
+  trait AkkaLibs {
+
+    self: SlickLibs =>
+
+    object akka {
+      val V = Versions.akka
+      val tOrg = "com.typesafe.akka"
+      val lOrg = "com.lightbend.akka"
+
+      def akkaMod(name: String): Dep =
+        ivy"$tOrg::akka-$name:$V"
+
+      lazy val actor: Dep = akkaMod("actor")
+      lazy val actorTyped: Dep = akkaMod("actor-typed")
+      lazy val stream: Dep = akkaMod("stream")
+      lazy val persistence: Dep = akkaMod("persistence-typed")
+      lazy val persistenceQuery: Dep = akkaMod("persistence-query")
+      lazy val persistenceJdbc: Dep =
+        ivy"$lOrg::akka-persistence-jdbc:5.0.4"
+      val persistenceTestKit: Dep = ivy"$tOrg::akka-persistence-testkit:$V"
+
+      object http {
+        val V = Versions.akkaHttp
+
+        lazy val http: Dep = ivy"$tOrg::akka-http:$V"
+        lazy val sprayJson: Dep = ivy"$tOrg::akka-http-spray-json:$V"
+
+      }
+
+      object projection {
+        val V = "1.2.2"
+
+        lazy val core: Dep =
+          ivy"$lOrg::akka-projection-core:$V"
+        lazy val eventsourced: Dep =
+          ivy"$lOrg::akka-projection-eventsourced:$V"
+        lazy val slick: Dep =
+          ivy"$lOrg::akka-projection-slick:$V"
+        lazy val jdbc: Dep =
+          ivy"$lOrg::akka-projection-jdbc:$V"
+      }
+
+      object profiles {
+        // TODO: deal with cross-version for Scala3 (for3Use2_13)
+        lazy val eventsourcedJdbcProjection: Agg[Dep] = Agg(
+          persistenceQuery,
+          projection.core,
+          projection.eventsourced,
+          projection.slick,
+          persistenceJdbc
+        ) ++ slick.default
+      }
+    }
+  }
+
+  trait SlickLibs {
+    object slick {
+      val V = IWMaterials.Versions.slick
+      val org = "com.typesafe.slick"
+
+      lazy val slick: Dep = ivy"$org::slick:$V"
+      lazy val hikaricp: Dep = ivy"$org::slick-hikaricp:$V"
+      lazy val default: Agg[Dep] = Agg(slick, hikaricp)
+    }
+  }
+
+}
diff --git a/fiftyforms/build.sc b/fiftyforms/build.sc
new file mode 100644
index 0000000..df64eb0
--- /dev/null
+++ b/fiftyforms/build.sc
@@ -0,0 +1,158 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.bom
+
+object support {
+  val Deps = bom.IWMaterials.Deps
+  val Versions = bom.IWMaterials.Versions
+
+  trait CommonModule extends ScalaModule {
+    def scalaVersion = "3.1.1"
+    def scalacOptions = Seq(
+      "-encoding",
+      "utf8",
+      "-deprecation",
+      "-explain-types",
+      "-explain",
+      "-feature",
+      "-language:experimental.macros",
+      "-language:higherKinds",
+      "-language:implicitConversions",
+      "-unchecked",
+      "-Xfatal-warnings",
+      "-Ykind-projector"
+    )
+  }
+
+  trait CommonJSModule extends CommonModule with ScalaJSModule {
+    def scalaJSVersion = "1.8.0"
+  }
+
+  trait CrossPlatformModule extends Module { outer =>
+    def ivyDeps: T[Agg[Dep]] = Agg[Dep]()
+    def jsDeps: T[Agg[Dep]] = Agg[Dep]()
+    def jvmDeps: T[Agg[Dep]] = Agg[Dep]()
+    def moduleDeps: Seq[Module] = Seq[Module]()
+
+    trait PlatformModule extends CommonModule {
+      def platform: String
+      def millSourcePath = outer.millSourcePath
+      def ivyDeps = outer.ivyDeps() ++ (platform match {
+        case "js" => jsDeps()
+        case _    => jvmDeps()
+      })
+      def moduleDeps = outer.moduleDeps.collect {
+        case m: CrossPlatformModule => m.platformModule(platform)
+        case m: JavaModule          => m
+      }
+    }
+
+    def platformModule(platform: String): JavaModule
+  }
+
+  trait PureCrossModule extends CrossPlatformModule {
+    object js extends PlatformModule {
+      def platform = "js"
+    }
+    object jvm extends PlatformModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+  trait PureCrossSbtModule extends CrossPlatformModule {
+    object js extends PlatformModule with SbtModule {
+      def platform = "js"
+    }
+    object jvm extends PlatformModule with SbtModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+  trait FullCrossSbtModule extends CrossPlatformModule {
+    trait FullPlatformModule extends PlatformModule {
+      def sources = T.sources(
+        millSourcePath / platform / "src" / "main" / "scala",
+        millSourcePath / "shared" / "src" / "main" / "scala"
+      )
+
+      def resources = T.sources(
+        millSourcePath / platform / "src" / "main" / "resources",
+        millSourcePath / "shared" / "src" / "main" / "resources"
+      )
+    }
+
+    object js extends FullPlatformModule {
+      def platform = "js"
+    }
+    object jvm extends FullPlatformModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+}
+
+import support._
+
+object mongo extends CommonModule {
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioJson,
+    Deps.zioConfig,
+    ivy"org.mongodb.scala::mongo-scala-driver:4.2.3".withDottyCompat(
+      scalaVersion()
+    )
+  )
+}
+
+object tapir extends FullCrossSbtModule {
+  def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson, Deps.zioJson)
+  def jvmDeps = Agg(Deps.tapirZIO, Deps.tapirZIOHttp4sServer)
+  def jsDeps = Agg(Deps.tapirSttpClient)
+}
+
+object akkaPersistence extends CommonModule {
+  def millSourcePath = build.millSourcePath / "akka-persistence"
+  def ivyDeps = (Agg(
+    Deps.akka.persistenceQuery,
+    Deps.akka.persistenceJdbc,
+    Deps.akka.projection.core,
+    Deps.akka.projection.eventsourced,
+    Deps.akka.projection.slick
+  ) ++ Deps.slick.default).map(_.withDottyCompat(scalaVersion())) ++ Agg(
+    Deps.zio,
+    Deps.zioJson,
+    Deps.zioConfig,
+    Deps.akka.persistence.withDottyCompat(scalaVersion()),
+    ivy"com.typesafe.akka::akka-cluster-sharding-typed:${Deps.akka.V}"
+      .withDottyCompat(scalaVersion())
+  )
+}
+
+object ui extends CommonJSModule {
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.laminar,
+    Deps.zioJson,
+    Deps.waypoint,
+    Deps.urlDsl,
+    Deps.laminextCore,
+    Deps.laminextUI,
+    Deps.laminextTailwind,
+    Deps.laminextValidationCore
+  )
+}

diff --git a/build.sc b/build.sc
new file mode 100644
index 0000000..8a81445
--- /dev/null
+++ b/build.sc
@@ -0,0 +1,121 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.fiftyforms.{build => ff}, ff.support._
+
+object core extends PureCrossSbtModule
+
+object codecs extends PureCrossSbtModule {
+  def ivyDeps = Agg(Deps.zioJson)
+  def moduleDeps = Seq(core, ff.tapir)
+}
+
+val coreCodecs = codecs
+
+object endpoints extends PureCrossSbtModule {
+  def moduleDeps = Seq(core, codecs, ff.tapir)
+}
+
+val coreEndpoints = endpoints
+
+object domain extends Module {
+  trait DomainModule extends Module {
+    object shared extends Module {
+      object model extends PureCrossModule {
+        def moduleDeps = Seq(core)
+        def ivyDeps = Agg(Deps.zioPrelude)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps = Seq(model, coreCodecs)
+        def ivyDeps = Agg(Deps.zioJson)
+      }
+    }
+
+    trait CommonProjects extends Module {
+      object model extends PureCrossModule {
+        def ivyDeps = Agg(Deps.zioPrelude)
+        def moduleDeps = Seq(shared.model, core)
+      }
+      object codecs extends PureCrossModule {
+        def moduleDeps =
+          Seq(coreCodecs, model, shared.model, shared.codecs, ff.tapir)
+      }
+      object endpoints extends PureCrossModule {
+        def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson)
+        def moduleDeps = Seq(model, codecs, coreEndpoints)
+      }
+      object client extends CommonJSModule {
+        def moduleDeps = Seq(endpoints.js)
+      }
+      object components extends CommonJSModule {
+        def ivyDeps = Agg(
+          Deps.laminar,
+          Deps.laminextCore,
+          Deps.laminextUI,
+          Deps.laminextTailwind,
+          Deps.laminextValidationCore
+        )
+        def moduleDeps = Seq(ff.ui)
+      }
+    }
+
+    object query extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(repo, query.endpoints.jvm)
+      }
+      object repo extends CommonModule {
+        def ivyDeps = Agg(Deps.zio)
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.mongo)
+      }
+      object projection extends CommonModule {
+        def moduleDeps = Seq(repo, ff.akkaPersistence)
+      }
+    }
+
+    object command extends CommonProjects {
+      object api extends CommonModule {
+        def ivyDeps = Agg(Deps.zio, Deps.tapirZIOHttp4sServer)
+        def moduleDeps = Seq(entity, command.endpoints.jvm)
+      }
+      object entity extends CommonModule {
+        def moduleDeps = Seq(model.jvm, codecs.jvm, ff.akkaPersistence)
+      }
+    }
+  }
+
+  object proof extends DomainModule
+  object parameters extends DomainModule
+  object users extends DomainModule
+}
+
+object server extends CommonModule {
+  def moduleDeps = Seq(
+    core.jvm,
+    domain.parameters.query.api,
+    domain.parameters.command.api,
+    domain.users.query.api,
+    domain.users.command.api,
+    domain.proof.query.api,
+    domain.proof.command.api,
+    domain.proof.query.projection,
+    domain.proof.command.entity,
+    endpoints.jvm
+  )
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioConfig,
+    Deps.zioConfigTypesafe,
+    Deps.zioConfigMagnolia,
+    Deps.zioLoggingSlf4j,
+    Deps.zioInteropCats,
+    Deps.tapirCore,
+    Deps.tapirZIO,
+    Deps.tapirZIOJson,
+    Deps.tapirZIOHttp4sServer,
+    Deps.http4sBlazeServer,
+    Deps.logbackClassic,
+    Deps.http4sPac4J,
+    Deps.pac4jOIDC,
+    ivy"mysql:mysql-connector-java:8.0.28"
+  )
+}
diff --git a/fiftyforms/bom.sc b/fiftyforms/bom.sc
new file mode 100644
index 0000000..e9266b8
--- /dev/null
+++ b/fiftyforms/bom.sc
@@ -0,0 +1,227 @@
+import mill._, scalalib._
+
+object IWMaterials {
+
+  object Versions {
+    val akka = "2.6.16"
+    val akkaHttp = "10.2.4"
+    val cats = "2.7.0"
+    val elastic4s = "7.12.2"
+    val http4s = "0.23.10"
+    val http4sPac4J = "4.0.0"
+    val laminar = "0.14.2"
+    val laminext = laminar
+    val logbackClassic = "1.2.10"
+    val pac4j = "5.2.0"
+    val play = "2.8.8"
+    val playJson = "2.9.2"
+    val scalaTest = "3.2.9"
+    val slick = "3.3.3"
+    val sttpClient = "3.5.0"
+    val tapir = "0.20.1"
+    val urlDsl = "0.4.0"
+    val waypoint = "0.5.0"
+    val zio = "2.0.0-RC2"
+    val zioConfig = "3.0.0-RC2"
+    val zioInteropCats = "3.3.0-RC2"
+    val zioJson = "0.3.0-RC3"
+    val zioLogging = "2.0.0-RC5"
+    val zioPrelude = "1.0.0-RC10"
+    val zioZMX = "0.0.11"
+  }
+
+  object Deps extends AkkaLibs with SlickLibs {
+    import IWMaterials.{Versions => V}
+
+    val zioOrg = "dev.zio"
+
+    def zioLib(name: String, version: String): Dep =
+      ivy"$zioOrg::zio-$name::$version"
+
+    lazy val zio: Dep = ivy"$zioOrg::zio:${V.zio}"
+
+    lazy val zioTest: Dep = zioLib("test", V.zio)
+    lazy val zioTestSbt: Dep = zioLib("test", V.zio)
+
+    lazy val zioConfig: Dep = zioLib("config", V.zioConfig)
+    lazy val zioConfigTypesafe: Dep =
+      zioLib("config-typesafe", V.zioConfig)
+    lazy val zioConfigMagnolia: Dep =
+      zioLib("config-magnolia", V.zioConfig)
+
+    lazy val zioJson: Dep = zioLib("json", V.zioJson)
+    lazy val zioLogging: Dep = zioLib("logging", V.zioLogging)
+    lazy val zioLoggingSlf4j: Dep =
+      zioLib("logging-slf4j", V.zioLogging)
+    lazy val zioPrelude: Dep = zioLib("prelude", V.zioPrelude)
+    lazy val zioStreams: Dep = zioLib("streams", V.zio)
+    lazy val zioZMX: Dep = zioLib("zmx", V.zioZMX)
+    lazy val zioInteropCats: Dep =
+      zioLib("interop-cats", V.zioInteropCats)
+
+    /* What is the equivalent? ZIOModule with prepared test config?
+  def useZIO(testConf: Configuration*): Agg[Dep] = Agg(
+    zio,
+    zioTest,
+    zioTestSbt,
+    testFrameworks += new TestFramework("zio.test.sbt.ZTestFramework")
+   )
+     */
+
+    /*
+  def useZIOAll(testConf: Configuration*): Seq[Def.Setting[_]] =
+    useZIO(testConf: _*) ++ Seq(
+      zioStreams,
+      zioConfig,
+      zioConfigTypesafe,
+      zioConfigMagnolia,
+      zioJson,
+      zioZMX,
+      zioLogging,
+      zioPrelude
+   )
+     */
+
+    private val tapirOrg = "com.softwaremill.sttp.tapir"
+    def tapirLib(name: String): Dep =
+      ivy"${tapirOrg}::tapir-$name::${V.tapir}"
+
+    lazy val tapirCore: Dep = tapirLib("core")
+    lazy val tapirZIO: Dep = tapirLib("zio")
+    lazy val tapirZIOJson: Dep = tapirLib("json-zio")
+    lazy val tapirSttpClient: Dep = tapirLib("sttp-client")
+    lazy val tapirCats: Dep = tapirLib("cats")
+    lazy val tapirZIOHttp4sServer: Dep = tapirLib("zio-http4s-server")
+
+    private val sttpClientOrg = "com.softwaremill.sttp.client3"
+    def sttpClientLib(name: String): Dep =
+      ivy"${sttpClientOrg}::${name}:${V.sttpClient}"
+
+    lazy val sttpClientCore: Dep = sttpClientLib("core")
+
+    lazy val http4sBlazeServer: Dep =
+      ivy"org.http4s::http4s-blaze-server:${V.http4s}"
+
+    lazy val http4sPac4J: Dep =
+      ivy"org.pac4j::http4s-pac4j:${V.http4sPac4J}"
+    lazy val pac4jOIDC: Dep =
+      ivy"org.pac4j:pac4j-oidc:${V.pac4j}"
+
+    lazy val scalaTest: Dep =
+      ivy"org.scalatest::scalatest:${V.scalaTest}"
+    lazy val scalaTestPlusScalacheck: Dep =
+      ivy"org.scalatestplus::scalacheck-1-15:3.2.9.0"
+    lazy val playScalaTest: Dep =
+      ivy"org.scalatestplus.play::scalatestplus-play:5.1.0"
+
+    private val playOrg = "com.typesafe.play"
+    lazy val playMailer: Dep = ivy"${playOrg}::play-mailer:8.0.1"
+    lazy val playServer: Dep = ivy"${playOrg}::play-server:${V.play}"
+    lazy val playAkkaServer: Dep =
+      ivy"${playOrg}::play-akka-http-server:${V.play}"
+    lazy val play: Dep = ivy"${playOrg}::play:${V.play}"
+    lazy val playAhcWs: Dep = ivy"${playOrg}::play-ahc-ws:${V.play}"
+    lazy val playJson: Dep = ivy"${playOrg}::play-json:${V.playJson}"
+
+    private val elastic4sOrg = "com.sksamuel.elastic4s"
+    lazy val useElastic4S: Agg[Dep] = Agg(
+      ivy"${elastic4sOrg}::elastic4s-core:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-client-akka:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-http-streams:${V.elastic4s}",
+      ivy"${elastic4sOrg}::elastic4s-json-play:${V.elastic4s}"
+    )
+
+    lazy val laminar: Dep = ivy"com.raquo::laminar::${V.laminar}"
+
+    private def laminext(name: String): Dep =
+      ivy"io.laminext::$name::${V.laminar}"
+
+    lazy val laminextCore: Dep = laminext("core")
+    lazy val laminextTailwind: Dep = laminext("tailwind")
+    lazy val laminextFetch: Dep = laminext("fetch")
+    lazy val laminextValidationCore: Dep = laminext("validation-core")
+    lazy val laminextUI: Dep = laminext("ui")
+
+    lazy val waypoint: Dep =
+      ivy"com.raquo::waypoint::${V.waypoint}"
+
+    lazy val urlDsl: Dep =
+      ivy"be.doeraene::url-dsl::${V.urlDsl}"
+
+    lazy val scalaJavaTime: Dep =
+      ivy"io.github.cquiroz::scala-java-time::2.3.0"
+
+    lazy val scalaJavaLocales: Dep =
+      ivy"io.github.cquiroz::scala-java-locales::1.2.1"
+
+    lazy val logbackClassic: Dep =
+      ivy"ch.qos.logback:logback-classic:${V.logbackClassic}"
+  }
+
+  trait AkkaLibs {
+
+    self: SlickLibs =>
+
+    object akka {
+      val V = Versions.akka
+      val tOrg = "com.typesafe.akka"
+      val lOrg = "com.lightbend.akka"
+
+      def akkaMod(name: String): Dep =
+        ivy"$tOrg::akka-$name:$V"
+
+      lazy val actor: Dep = akkaMod("actor")
+      lazy val actorTyped: Dep = akkaMod("actor-typed")
+      lazy val stream: Dep = akkaMod("stream")
+      lazy val persistence: Dep = akkaMod("persistence-typed")
+      lazy val persistenceQuery: Dep = akkaMod("persistence-query")
+      lazy val persistenceJdbc: Dep =
+        ivy"$lOrg::akka-persistence-jdbc:5.0.4"
+      val persistenceTestKit: Dep = ivy"$tOrg::akka-persistence-testkit:$V"
+
+      object http {
+        val V = Versions.akkaHttp
+
+        lazy val http: Dep = ivy"$tOrg::akka-http:$V"
+        lazy val sprayJson: Dep = ivy"$tOrg::akka-http-spray-json:$V"
+
+      }
+
+      object projection {
+        val V = "1.2.2"
+
+        lazy val core: Dep =
+          ivy"$lOrg::akka-projection-core:$V"
+        lazy val eventsourced: Dep =
+          ivy"$lOrg::akka-projection-eventsourced:$V"
+        lazy val slick: Dep =
+          ivy"$lOrg::akka-projection-slick:$V"
+        lazy val jdbc: Dep =
+          ivy"$lOrg::akka-projection-jdbc:$V"
+      }
+
+      object profiles {
+        // TODO: deal with cross-version for Scala3 (for3Use2_13)
+        lazy val eventsourcedJdbcProjection: Agg[Dep] = Agg(
+          persistenceQuery,
+          projection.core,
+          projection.eventsourced,
+          projection.slick,
+          persistenceJdbc
+        ) ++ slick.default
+      }
+    }
+  }
+
+  trait SlickLibs {
+    object slick {
+      val V = IWMaterials.Versions.slick
+      val org = "com.typesafe.slick"
+
+      lazy val slick: Dep = ivy"$org::slick:$V"
+      lazy val hikaricp: Dep = ivy"$org::slick-hikaricp:$V"
+      lazy val default: Agg[Dep] = Agg(slick, hikaricp)
+    }
+  }
+
+}
diff --git a/fiftyforms/build.sc b/fiftyforms/build.sc
new file mode 100644
index 0000000..df64eb0
--- /dev/null
+++ b/fiftyforms/build.sc
@@ -0,0 +1,158 @@
+import mill._, scalalib._, scalajslib._
+
+import $file.bom
+
+object support {
+  val Deps = bom.IWMaterials.Deps
+  val Versions = bom.IWMaterials.Versions
+
+  trait CommonModule extends ScalaModule {
+    def scalaVersion = "3.1.1"
+    def scalacOptions = Seq(
+      "-encoding",
+      "utf8",
+      "-deprecation",
+      "-explain-types",
+      "-explain",
+      "-feature",
+      "-language:experimental.macros",
+      "-language:higherKinds",
+      "-language:implicitConversions",
+      "-unchecked",
+      "-Xfatal-warnings",
+      "-Ykind-projector"
+    )
+  }
+
+  trait CommonJSModule extends CommonModule with ScalaJSModule {
+    def scalaJSVersion = "1.8.0"
+  }
+
+  trait CrossPlatformModule extends Module { outer =>
+    def ivyDeps: T[Agg[Dep]] = Agg[Dep]()
+    def jsDeps: T[Agg[Dep]] = Agg[Dep]()
+    def jvmDeps: T[Agg[Dep]] = Agg[Dep]()
+    def moduleDeps: Seq[Module] = Seq[Module]()
+
+    trait PlatformModule extends CommonModule {
+      def platform: String
+      def millSourcePath = outer.millSourcePath
+      def ivyDeps = outer.ivyDeps() ++ (platform match {
+        case "js" => jsDeps()
+        case _    => jvmDeps()
+      })
+      def moduleDeps = outer.moduleDeps.collect {
+        case m: CrossPlatformModule => m.platformModule(platform)
+        case m: JavaModule          => m
+      }
+    }
+
+    def platformModule(platform: String): JavaModule
+  }
+
+  trait PureCrossModule extends CrossPlatformModule {
+    object js extends PlatformModule {
+      def platform = "js"
+    }
+    object jvm extends PlatformModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+  trait PureCrossSbtModule extends CrossPlatformModule {
+    object js extends PlatformModule with SbtModule {
+      def platform = "js"
+    }
+    object jvm extends PlatformModule with SbtModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+  trait FullCrossSbtModule extends CrossPlatformModule {
+    trait FullPlatformModule extends PlatformModule {
+      def sources = T.sources(
+        millSourcePath / platform / "src" / "main" / "scala",
+        millSourcePath / "shared" / "src" / "main" / "scala"
+      )
+
+      def resources = T.sources(
+        millSourcePath / platform / "src" / "main" / "resources",
+        millSourcePath / "shared" / "src" / "main" / "resources"
+      )
+    }
+
+    object js extends FullPlatformModule {
+      def platform = "js"
+    }
+    object jvm extends FullPlatformModule {
+      def platform = "jvm"
+    }
+
+    def platformModule(platform: String): JavaModule = platform match {
+      case "js" => js
+      case _    => jvm
+    }
+  }
+
+}
+
+import support._
+
+object mongo extends CommonModule {
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.zioJson,
+    Deps.zioConfig,
+    ivy"org.mongodb.scala::mongo-scala-driver:4.2.3".withDottyCompat(
+      scalaVersion()
+    )
+  )
+}
+
+object tapir extends FullCrossSbtModule {
+  def ivyDeps = Agg(Deps.tapirCore, Deps.tapirZIOJson, Deps.zioJson)
+  def jvmDeps = Agg(Deps.tapirZIO, Deps.tapirZIOHttp4sServer)
+  def jsDeps = Agg(Deps.tapirSttpClient)
+}
+
+object akkaPersistence extends CommonModule {
+  def millSourcePath = build.millSourcePath / "akka-persistence"
+  def ivyDeps = (Agg(
+    Deps.akka.persistenceQuery,
+    Deps.akka.persistenceJdbc,
+    Deps.akka.projection.core,
+    Deps.akka.projection.eventsourced,
+    Deps.akka.projection.slick
+  ) ++ Deps.slick.default).map(_.withDottyCompat(scalaVersion())) ++ Agg(
+    Deps.zio,
+    Deps.zioJson,
+    Deps.zioConfig,
+    Deps.akka.persistence.withDottyCompat(scalaVersion()),
+    ivy"com.typesafe.akka::akka-cluster-sharding-typed:${Deps.akka.V}"
+      .withDottyCompat(scalaVersion())
+  )
+}
+
+object ui extends CommonJSModule {
+  def ivyDeps = Agg(
+    Deps.zio,
+    Deps.laminar,
+    Deps.zioJson,
+    Deps.waypoint,
+    Deps.urlDsl,
+    Deps.laminextCore,
+    Deps.laminextUI,
+    Deps.laminextTailwind,
+    Deps.laminextValidationCore
+  )
+}
diff --git a/shell.nix b/shell.nix
index 322723d..2582231 100644
--- a/shell.nix
+++ b/shell.nix
@@ -9,5 +9,5 @@
 
 with pkgs;
 mkShell {
-  buildInputs = [ jre ammonite coursier bloop sbt scalafmt nodejs-16_x ];
+  buildInputs = [ jre ammonite coursier bloop mill sbt scalafmt nodejs-16_x ];
 }