Workaround for GHC-8.4.x

* Adds missing Semigroup instances
* Adds `semigroups` to the deps of `hmatrix`
* Hides conflicting names from import list with base >= 4.11
    * `(Prelude.<>)` and `GHC.TypeNats.Mod`

1 files changed, 4 insertions, 0 deletions

diff --git a/packages/base/src/Internal/Convolution.hs b/packages/base/src/Internal/Convolution.hs
index 384fdf8..004e1ff 100644
--- a/packages/base/src/Internal/Convolution.hs
+++ b/packages/base/src/Internal/Convolution.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
 -----------------------------------------------------------------------------
 {- |
@@ -23,6 +24,9 @@ import Internal.Numeric
 import Internal.Element
 import Internal.Conversion
 import Internal.Container
+#if MIN_VERSION_base(4,11,0)
+import Prelude hiding ((<>))
+#endif
 
 
 vectSS :: Element t => Int -> Vector t -> Matrix t