[#39] Build with GHC 8.2.2 and GHC 8.6.1 on CI

.travis.yml

@@ -14,6 +14,17 @@ cache:
 matrix:
   include:
 
+  - ghc: 8.2.2
+    env: GHCVER='8.2.2' CABALVER='head'
+    os: linux
+    addons:
+      apt:
+        sources:
+        - hvr-ghc
+        packages:
+        - ghc-8.2.2
+        - cabal-install-head
+
   - ghc: 8.4.3
     env: GHCVER='8.4.3' CABALVER='head'
     os: linux
@@ -25,6 +36,17 @@ matrix:
         - ghc-8.4.3
         - cabal-install-head
 
+  - ghc: 8.6.1
+    env: GHCVER='8.6.1' CABALVER='head'
+    os: linux
+    addons:
+      apt:
+        sources:
+        - hvr-ghc
+        packages:
+        - ghc-8.6.1
+        - cabal-install-head
+
   - ghc: 8.4.3
     env: GHCVER='8.4.3' STACK_YAML="$TRAVIS_BUILD_DIR/stack.yaml"
     os: linux
@@ -33,7 +55,6 @@ matrix:
         packages:
         - libgmp-dev
 
-
 install:
   - |
     if [ -z "$STACK_YAML" ]; then

co-log-core/co-log-core.cabal

@@ -13,7 +13,9 @@ category:            Logging
 build-type:          Simple
 extra-doc-files:     CHANGELOG.md
 cabal-version:       2.0
-tested-with:         GHC == 8.4.3
+tested-with:         GHC == 8.2.2
+                   , GHC == 8.4.3
+                   , GHC == 8.6.1
 
 source-repository head
   type:                git
@@ -26,7 +28,7 @@ library
                            Colog.Core.Class
                            Colog.Core.Severity
 
-  build-depends:       base >= 4.11 && < 5
+  build-depends:       base >= 4.10 && < 4.13
 
   ghc-options:         -Wall
                        -Wincomplete-uni-patterns

co-log/README.md

@@ -31,8 +31,10 @@ import Colog (Message, WithLog, cmap, fmtMessage, logDebug, logInfo, logTextStdo
               usingLoggerT)
 import Control.Monad.IO.Class (MonadIO, liftIO)
 
+import Data.Semigroup ((<>))
 import qualified Data.Text as Text
 import qualified Data.Text.IO as TextIO
+
 ```
 
 ## Simple IO function example

co-log/co-log.cabal

@@ -13,7 +13,9 @@ copyright:           2018 Kowainik
 category:            Logging
 build-type:          Simple
 extra-doc-files:     CHANGELOG.md
-tested-with:         GHC == 8.4.3
+tested-with:         GHC == 8.2.2
+                   , GHC == 8.4.3
+                   , GHC == 8.6.1
 
 source-repository head
   type:                git
@@ -31,7 +33,7 @@ library
                            Colog.Pure
   other-modules:       Prelude
 
-  build-depends:       base-noprelude >= 4.11 && < 5
+  build-depends:       base-noprelude >= 4.10 && < 4.13
                      , ansi-terminal ^>= 0.8
                      , bytestring ^>= 0.10.8
                      , co-log-core ^>= 0.1.0

co-log/src/Colog/Message.hs

@@ -9,6 +9,7 @@
 {-# LANGUAGE ScopedTypeVariables   #-}
 {-# LANGUAGE TypeFamilies          #-}
 {-# LANGUAGE ViewPatterns          #-}
+{-# LANGUAGE CPP                   #-}
 
 {- | 'Message' with 'Severity', and logging functions for them.
 -}
@@ -165,7 +166,12 @@ newtype MessageField (m :: Type -> Type) (fieldName :: Symbol) where
 
 instance (KnownSymbol fieldName, a ~ m (FieldType fieldName))
       => IsLabel fieldName (a -> TM.WrapTypeable (MessageField m)) where
+#if MIN_VERSION_base_noprelude(4,11,0)
     fromLabel field = TM.WrapTypeable $ MessageField @fieldName field
+#else
+    fromLabel field = TM.WrapTypeable $ MessageField  @_ @fieldName field    
+#endif
+    {-# INLINE fromLabel #-}
 
 extractField
     :: Applicative m