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/tests/src/Numeric/LinearAlgebra/Tests.hs b/packages/tests/src/Numeric/LinearAlgebra/Tests.hs
index 6d54f4d..2aefc87 100644
--- a/packages/tests/src/Numeric/LinearAlgebra/Tests.hs
+++ b/packages/tests/src/Numeric/LinearAlgebra/Tests.hs
@@ -39,7 +39,11 @@ import Numeric.LinearAlgebra.Tests.Properties
 import Test.HUnit hiding ((~:),test,Testable,State)
 import System.Info
 import Data.List(foldl1')
+#if MIN_VERSION_base(4,11,0)
+import Prelude hiding ((^),(<>))
+#else
 import Prelude hiding ((^))
+#endif
 import qualified Prelude
 import System.CPUTime
 import System.Exit