Tabview is currently not packaged in Debian (see BTS #811294). It is listed as
an optional dependency, but if it's absent, it crashes the whole CLI tool. With
this patch, only the `clevercsv view` command will fail, instead of the whole
program.
Index: python-clevercsv/clevercsv/console/commands/view.py
===================================================================
--- python-clevercsv.orig/clevercsv/console/commands/view.py
+++ python-clevercsv/clevercsv/console/commands/view.py
@@ -61,7 +61,7 @@ class ViewCommand(Command):
             )
             return
 
-        import_optional_dependency("tabview", raise_on_missing=True)
+        import_optional_dependency("tabview", raise_on_missing=False)
         from tabview import view
 
         view(rows)