updtae

crates/odian-packs/src/manifest.rs

@@ -404,6 +404,11 @@ pub struct TileSet {
     pub title: Option<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub description: Option<String>,
+    /// False when the store does not hold this item's bytes and never will. It is still
+    /// listed and described - an operator has to know it exists - but it arrives on a
+    /// drive, not over the network. Absent means true: everything else is downloadable.
+    #[serde(default = "carried", skip_serializing_if = "is_carried")]
+    pub on_dhp: bool,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
@@ -425,6 +430,19 @@ pub struct SrcFile {
     pub title: Option<String>,
     #[serde(default, skip_serializing_if = "Option::is_none")]
     pub description: Option<String>,
+    /// See `TileSet::on_dhp`. The world height map source is the case this exists for: 705 GB
+    /// that no DHP will ever serve over a link, and that an operator still needs to know about.
+    #[serde(default = "carried", skip_serializing_if = "is_carried")]
+    pub on_dhp: bool,
+}
+
+/// An item says nothing when the store carries it, which is nearly always.
+fn carried() -> bool {
+    true
+}
+
+fn is_carried(on_dhp: &bool) -> bool {
+    *on_dhp
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]