1 files changed, 10 insertions, 3 deletions
diff --git a/server/data/src/book/mod.rs b/server/data/src/book/mod.rs
index 263e8111..a0776f41 100644
--- a/server/data/src/book/mod.rs
+++ b/server/data/src/book/mod.rs
@@ -23,7 +23,7 @@ use crate::{
     Serverdata,
     book::{diagram_layout::diagram_layout, recipe_diagram::recipe_diagram},
 };
-use anyhow::Result;
+use anyhow::{Context, Result};
 use hurrycurry_locale::trm;
 use hurrycurry_protocol::{
     Gamedata, Message,
@@ -40,9 +40,16 @@ pub fn book(data: &Gamedata, serverdata: &Serverdata) -> Result<Book> {
     let mut toc = Vec::new();
 
     for (name, repr) in serverdata.recipe_groups.clone() {
-        let repr = repr.into_iter().collect::<Vec<_>>();
+        let repr = repr
+            .into_iter()
+            .filter(|&i| data.demands.iter().any(|d| d.input == i))
+            .collect::<Vec<_>>();
+        if repr.is_empty() {
+            continue;
+        }
+
         let mut diagram = recipe_diagram(data, serverdata, &repr)?;
-        diagram_layout(&mut diagram)?;
+        diagram_layout(&mut diagram).context("during layouting")?;
         let title = Message::Translation {
             id: format!("b.{name}.title"),
             params: vec![],