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| -rw-r--r-- | docs/users_guide/separate_compilation.rst | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/users_guide/separate_compilation.rst b/docs/users_guide/separate_compilation.rst index 9693cea8fd..f6c710f155 100644 --- a/docs/users_guide/separate_compilation.rst +++ b/docs/users_guide/separate_compilation.rst @@ -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 |