From: Stefano Rivera <stefanor@debian.org>
Date: Tue, 11 Jan 2022 16:45:11 -0400
Subject: Debian: Instruct the user to install the appropriate -whl package

Forwarded: not-needed
---
 src/virtualenv/seed/wheels/embed/__init__.py | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/virtualenv/seed/wheels/embed/__init__.py b/src/virtualenv/seed/wheels/embed/__init__.py
index 6c8180d..6ed9727 100644
--- a/src/virtualenv/seed/wheels/embed/__init__.py
+++ b/src/virtualenv/seed/wheels/embed/__init__.py
@@ -61,6 +61,20 @@ BUNDLE_SUPPORT = list_available_wheels(BUNDLE_SUPPORT.keys())
 
 
 def get_embed_wheel(distribution, for_py_version):
+    # Debian specific: Point at the appropriate wheel package
+    wheel = BUNDLE_SUPPORT.get(for_py_version, {}).get(distribution)
+    if wheel is None:
+        raise Exception((
+                "Wheel for {} for Python {} is unavailable. "
+                "apt install python{}-{}-whl"
+            ).format(
+                distribution,
+                for_py_version,
+                '2' if for_py_version == '2.7' else '3',
+                distribution,
+            ))
+    # End Debian specific
+
     mapping = BUNDLE_SUPPORT.get(for_py_version, {}) or BUNDLE_SUPPORT[MAX]
     wheel_file = mapping.get(distribution)
     if wheel_file is None:
