derive(1) on Linux
The text 879ca70c7118, as Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
Deriving instances for data types in Haskell
Flags it lists
-
--append -
--generate -
--no-opts -
--preprocessor -
--test -
--version -
-F -
-a -
-n -
-v