carefully import hittekaart_pyhittekaart-py

1 files changed, 7 insertions, 1 deletions

diff --git a/fietsboek/hittekaart.py b/fietsboek/hittekaart.py
index 06319a4..25d4864 100644
--- a/fietsboek/hittekaart.py
+++ b/fietsboek/hittekaart.py
@@ -10,7 +10,10 @@ import tempfile
 from pathlib import Path
 from typing import Optional
 
-import hittekaart_py
+try:
+    import hittekaart_py
+except ImportError:
+    hittekaart_py = None
 from sqlalchemy import select
 from sqlalchemy.orm import aliased
 from sqlalchemy.orm.session import Session
@@ -56,6 +59,9 @@ def generate(
     :param threads: Number of threads that ``hittekaart`` should use. Defaults
         to 0, which uses all available cores.
     """
+    if hittekaart_py is None:
+        raise RuntimeError("hittekaart not available")
+
     if not input_files:
         return