Commit a4ccd330 authored by Edward Z. Yang's avatar Edward Z. Yang
Browse files

Add index entry for signature files / Backpack.


Signed-off-by: default avatarEdward Z. Yang <ezyang@cs.stanford.edu>
parent e46a2e16
......@@ -662,6 +662,9 @@ A hs-boot file is written in a subset of Haskell:
Module signatures
-----------------
.. index::
single: signature files; Backpack; hsig files
GHC 8.2 supports module signatures (``hsig`` files), which allow you to
write a signature in place of a module implementation, deferring the
choice of implementation until a later point in time. This feature is
......
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