Create a Workflow type to capture an entire workflow file.

.github/workflows/ci.yml

@@ -7,7 +7,7 @@
 
 name: Continuous Integration
 
-on:
+on:  
   pull_request:
     branches: ['**', '!update/**', '!pr/**']
   push:
@@ -31,7 +31,6 @@ permissions:
 env:
   GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-
 concurrency:
   group: ${{ github.workflow }} @ ${{ github.ref }}
   cancel-in-progress: true

.github/workflows/clean.yml

@@ -7,12 +7,16 @@
 
 name: Clean
 
-on: push
+on:  
+  push:
 
 jobs:
   delete-artifacts:
     name: Delete Artifacts
-    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [ubuntu-22.04]
+    runs-on: ${{ matrix.os }}
     env:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
     steps:

ci/src/main/scala/org/typelevel/sbt/TypelevelCiPlugin.scala

@@ -150,7 +150,7 @@ object TypelevelCiPlugin extends AutoPlugin {
       val dependencySubmission =
         if (tlCiDependencyGraphJob.value)
           List(
-            WorkflowJob(
+            WorkflowJob.Run(
               "dependency-submission",
               "Submit Dependencies",
               scalas = Nil,
@@ -173,7 +173,7 @@ object TypelevelCiPlugin extends AutoPlugin {
       Some(file(".scala-steward.conf")).filter(_.exists()),
     githubWorkflowAddedJobs ++= {
       tlCiStewardValidateConfig.value.toList.map { config =>
-        WorkflowJob(
+        WorkflowJob.Run(
           "validate-steward",
           "Validate Steward Config",
           WorkflowStep.Checkout ::

github-actions/src/main/scala/org/typelevel/sbt/gha/Concurrency.scala

@@ -18,15 +18,24 @@ package org.typelevel.sbt.gha
 
 sealed abstract class Concurrency {
   def group: String
-  def cancelInProgress: Option[Boolean]
+  def cancelInProgress: Option[String]
 }
 
 object Concurrency {
+  def apply(group: String): Concurrency =
+    Impl(group, None)
 
-  def apply(group: String, cancelInProgress: Option[Boolean] = None): Concurrency =
+  def apply(group: String, cancelInProgress: Boolean): Concurrency =
+    apply(group, Some(cancelInProgress))
+
+  def apply(group: String, cancelInProgress: Option[Boolean]): Concurrency =
+    Impl(group, cancelInProgress.map(_.toString))
+
+  def apply(group: String, cancelInProgress: Option[String])(
+      implicit dummy: DummyImplicit): Concurrency =
     Impl(group, cancelInProgress)
 
-  private final case class Impl(group: String, cancelInProgress: Option[Boolean])
+  private final case class Impl(group: String, cancelInProgress: Option[String])
       extends Concurrency {
     override def productPrefix = "Concurrency"
   }

github-actions/src/main/scala/org/typelevel/sbt/gha/GenerativeKeys.scala

@@ -25,6 +25,10 @@ trait GenerativeKeys {
   lazy val githubWorkflowCheck = taskKey[Unit](
     "Checks to see if the ci.yml and clean.yml files are equivalent to what would be generated and errors if otherwise")
 
+  lazy val githubWorkflows = settingKey[Map[String, Workflow]](
+    "The map of jobs which will make up the generated workflows, with the keys being the workflow file path.")
+  lazy val githubWorkflowCI =
+    settingKey[Workflow]("The Workflow which will make up the generated ci workflow (ci.yml)")
   lazy val githubWorkflowGeneratedCI = settingKey[Seq[WorkflowJob]](
     "The sequence of jobs which will make up the generated ci workflow (ci.yml)")
   lazy val githubWorkflowGeneratedUploadSteps = settingKey[Seq[WorkflowStep]](
@@ -65,13 +69,17 @@ trait GenerativeKeys {
       s"Commands automatically prepended to a WorkflowStep.Sbt (default: ['++ $${{ matrix.scala }}'])")
   lazy val githubWorkflowBuild = settingKey[Seq[WorkflowStep]](
     "A sequence of workflow steps which compile and test the project (default: [Sbt(List(\"test\"))])")
+  lazy val githubWorkflowBuildJob =
+    settingKey[WorkflowJob]("A workflow job for compiling and testing the project")
 
   lazy val githubWorkflowPublishPreamble = settingKey[Seq[WorkflowStep]](
     "A list of steps to insert after base setup but before publishing (default: [])")
   lazy val githubWorkflowPublishPostamble = settingKey[Seq[WorkflowStep]](
     "A list of steps to insert after publication but before the end of the publish job (default: [])")
   lazy val githubWorkflowPublish = settingKey[Seq[WorkflowStep]](
     "A sequence workflow steps which publishes the project (default: [Sbt(List(\"+publish\"))])")
+  lazy val githubWorkflowPublishJob =
+    settingKey[WorkflowJob]("A workflow job which publishes the project.")
   lazy val githubWorkflowPublishTargetBranches = settingKey[Seq[RefPredicate]](
     "A set of branch predicates which will be applied to determine whether the current branch gets a publication stage; if empty, publish will be skipped entirely (default: [== main])")
   lazy val githubWorkflowPublishCond = settingKey[Option[String]](