driver: store multiple recipe with the same ID, select highest version number

We are using the Debian version number scheme for comparision.

1 files changed, 18 insertions, 4 deletions

diff --git a/crates/driver/src/context.rs b/crates/driver/src/context.rs
index c3ca79f..ccb8581 100644
--- a/crates/driver/src/context.rs
+++ b/crates/driver/src/context.rs
@@ -140,13 +140,13 @@ fn platform_relation(args: &TaskArgs, from: &str, to: &str) -> Option<PlatformRe
 pub struct Context {
 	platforms: HashMap<String, Arg>,
 	globals: TaskArgs,
-	tasks: HashMap<TaskID, TaskDef>,
+	tasks: HashMap<TaskID, Vec<TaskDef>>,
 	rootfs: (ArchiveHash, String),
 	rootfs_tasks: HashMap<TaskID, TaskDef>,
 }
 
 impl Context {
-	pub fn new(tasks: HashMap<TaskID, TaskDef>, pins: Pins) -> error::Result<Self> {
+	pub fn new(tasks: HashMap<TaskID, Vec<TaskDef>>, pins: Pins) -> error::Result<Self> {
 		let platforms: HashMap<_, _> = [
 			arg(
 				"build",
@@ -270,15 +270,29 @@ impl Context {
 		Some(task_def)
 	}
 
+	fn select_task(tasks: &[TaskDef]) -> &TaskDef {
+		tasks
+			.iter()
+			.max_by(|task1, task2| {
+				deb_version::compare_versions(
+					task1.meta.version.as_deref().unwrap_or_default(),
+					task2.meta.version.as_deref().unwrap_or_default(),
+				)
+			})
+			.unwrap()
+	}
+
 	fn get_with_args<'ctx>(&'ctx self, id: &'ctx TaskID, args: &TaskArgs) -> Result<&TaskDef> {
 		if let Some(rootfs_task) = self.rootfs_task(id, args) {
 			return Ok(rootfs_task);
 		}
 
-		self.tasks.get(id).ok_or(Error {
+		let tasks = self.tasks.get(id).ok_or(Error {
 			task: id,
 			kind: ErrorKind::TaskNotFound,
-		})
+		})?;
+
+		Ok(Self::select_task(tasks))
 	}
 
 	pub fn get<'ctx>(&'ctx self, task: &TaskRef<'ctx>) -> Result<&TaskDef> {