mark unit explicitly

build.sbt

@@ -27,5 +27,4 @@ lazy val demo =
     .withResolver("rufio")
 
 lazy val playground =
-  module("playground")
+  module("playground").withCats
-    .withCats

src/main/scala/com/htmlism/mos6502/dsl/syntax/AsmDocSyntax.scala

@@ -14,7 +14,7 @@ trait AsmDocSyntax:
     ctx
       .push(asmCtx.toFragment)
 
-  def group[A](s: String)(f: DefinitionGroupContext => A)(using ctx: AsmDocumentContext): Unit =
+  def group(s: String)(f: DefinitionGroupContext => Unit)(using ctx: AsmDocumentContext): Unit =
     val g: DefinitionGroupContext =
       new DefinitionGroupContext
 

src/main/scala/com/htmlism/mos6502/dsl/syntax/DefinitionGroupSyntax.scala

@@ -11,11 +11,6 @@ trait DefinitionGroupSyntax:
 
     definition
 
-  def constant(name: String, x: Int)(using ctx: DefinitionGroupContext): Definition[Int] =
+  def constant(name: String, x: Int)(using ctx: DefinitionGroupContext): Unit =
-    val definition =
-      Definition(name, x)
-
     ctx
       .push(Definition(name, x))
-
-    definition

src/test/scala/com/htmlism/mos6502/dsl/DslSpec.scala

@@ -10,7 +10,8 @@ class DslSpec extends AnyFlatSpec with should.Matchers:
     val doc =
       asmDoc { implicit ctx =>
         group("constants test") { implicit g =>
-          (constant("margin", 16), constant("secret", 42))
+          constant("margin", 16)
+          constant("secret", 42)
         }
       }