diff --git a/build.sbt b/build.sbt
index a533b1e..425f5a4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -8,11 +8,15 @@
 
 ThisBuild / scalaVersion := scala3Version
 
+// TODO: get rid of the nested empty directories in packages
+// MAYBE: get rid of src/main/scala, replace with less nested structure
+// We mostly know what kind of project it is, there is no need to have this by default
 lazy val proof = entityProject("proof", file("domain/proof"))
   .components(_.dependsOn(ui))
   .model(_.dependsOn(core))
   .json(_.dependsOn(json))
   .repo(_.dependsOn(`mongo-support`))
+  .entity(_.dependsOn(`akka-persistence-support`))
   .endpoints(_.dependsOn(`tapir-support`))
 
 lazy val parameters = entityProject("parameters", file("domain/parameters"))
@@ -42,6 +46,7 @@
   .in(file("endpoints"))
   .dependsOn(core, json, `tapir-support`)
 
+// TODO: move all from fiftyforms to iterative works
 lazy val ui = (project in file("fiftyforms/ui"))
   .enablePlugins(ScalaJSPlugin)
   .settings(
@@ -72,6 +77,10 @@
       .cross(CrossVersion.for3Use2_13)
   )
 
+lazy val `akka-persistence-support` = project
+  .in(file("fiftyforms/akka-persistence"))
+  .settings(IWDeps.akkaPersistence)
+
 lazy val app = (project in file("app"))
   .enablePlugins(ScalaJSPlugin, VitePlugin)
   .settings(

diff --git a/build.sbt b/build.sbt
index a533b1e..425f5a4 100644
--- a/build.sbt
+++ b/build.sbt
@@ -8,11 +8,15 @@
 
 ThisBuild / scalaVersion := scala3Version
 
+// TODO: get rid of the nested empty directories in packages
+// MAYBE: get rid of src/main/scala, replace with less nested structure
+// We mostly know what kind of project it is, there is no need to have this by default
 lazy val proof = entityProject("proof", file("domain/proof"))
   .components(_.dependsOn(ui))
   .model(_.dependsOn(core))
   .json(_.dependsOn(json))
   .repo(_.dependsOn(`mongo-support`))
+  .entity(_.dependsOn(`akka-persistence-support`))
   .endpoints(_.dependsOn(`tapir-support`))
 
 lazy val parameters = entityProject("parameters", file("domain/parameters"))
@@ -42,6 +46,7 @@
   .in(file("endpoints"))
   .dependsOn(core, json, `tapir-support`)
 
+// TODO: move all from fiftyforms to iterative works
 lazy val ui = (project in file("fiftyforms/ui"))
   .enablePlugins(ScalaJSPlugin)
   .settings(
@@ -72,6 +77,10 @@
       .cross(CrossVersion.for3Use2_13)
   )
 
+lazy val `akka-persistence-support` = project
+  .in(file("fiftyforms/akka-persistence"))
+  .settings(IWDeps.akkaPersistence)
+
 lazy val app = (project in file("app"))
   .enablePlugins(ScalaJSPlugin, VitePlugin)
   .settings(
diff --git a/project/DomainProjectsPlugin.scala b/project/DomainProjectsPlugin.scala
index 6aad728..80ee492 100644
--- a/project/DomainProjectsPlugin.scala
+++ b/project/DomainProjectsPlugin.scala
@@ -38,6 +38,8 @@
     def components(upd: Project => Project): EntityProject =
       query(_.components(upd)).command(_.components(upd))
     def repo(upd: Project => Project): EntityProject = query(_.repo(upd))
+    def projection(upd: Project => Project): EntityProject = query(_.projection(upd))
+    def entity(upd: Project => Project): EntityProject = command(_.entity(upd))
     override def componentProjects: Seq[Project] =
       Seq(model, json).flatMap(
         _.componentProjects