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, 1 deletions

diff --git a/packages/base/src/Internal/Container.hs b/packages/base/src/Internal/Container.hs
index b379530..1520489 100644
--- a/packages/base/src/Internal/Container.hs
+++ b/packages/base/src/Internal/Container.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
@@ -29,7 +30,9 @@ import Internal.Matrix
 import Internal.Element
 import Internal.Numeric
 import Internal.Algorithms(Field,linearSolveSVD,Herm,mTm)
-
+#if MIN_VERSION_base(4,11,0)
+import Prelude hiding ((<>))
+#endif
 ------------------------------------------------------------------
 
 {- | Creates a real vector containing a range of values: