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/Util.hs b/packages/base/src/Internal/Util.hs
index ec21fe4..8c8a31e 100644
--- a/packages/base/src/Internal/Util.hs
+++ b/packages/base/src/Internal/Util.hs
@@ -1,3 +1,4 @@
+{-# LANGUAGE CPP #-}
 {-# LANGUAGE FlexibleContexts #-}
 {-# LANGUAGE FlexibleInstances #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
@@ -80,6 +81,9 @@ import Control.Arrow((&&&),(***))
 import Data.Complex
 import Data.Function(on)
 import Internal.ST
+#if MIN_VERSION_base(4,11,0)
+import Prelude hiding ((<>))
+#endif
 
 type ℝ = Double
 type ℕ = Int