Fix the build of hledger-lib with ghc 8.0.x and base-compat 0.10.x.

We don't need to import Data.Monoid because Prelude.Compat exports "<>"
already. In fact, importing that module causes build failures:

    Hledger/Read/Common.hs:725:62: error:
        Ambiguous occurrence ‘<>’
        It could refer to either ‘Sem.<>’,
                                 imported from ‘Prelude.Compat’ at Hledger/Read/Common.hs:97:1-39
                                 (and originally defined in ‘Data.Semigroup’)
                              or ‘Data.Monoid.<>’,
                                 imported from ‘Data.Monoid’ at Hledger/Read/Common.hs:110:1-18

Fixes https://github.com/simonmichael/hledger/issues/794.

hledger-lib/Hledger/Read/Common.hs

@@ -106,9 +106,6 @@ import Data.Functor.Identity
 import Data.List.Compat
 import Data.List.NonEmpty (NonEmpty(..))
 import Data.Maybe
-#if !(MIN_VERSION_base(4,11,0))
-import Data.Monoid
-#endif
 import qualified Data.Map as M
 import qualified Data.Semigroup as Sem
 import Data.Text (Text)

hledger-lib/Hledger/Read/JournalReader.hs

@@ -78,9 +78,6 @@ import Control.Monad
 import Control.Monad.Except (ExceptT(..), runExceptT, throwError)
 import Control.Monad.State.Strict
 import qualified Data.Map.Strict as M
-#if !(MIN_VERSION_base(4,11,0))
-import Data.Monoid
-#endif
 import Data.Text (Text)
 import Data.String
 import Data.List

hledger-lib/hledger-lib.cabal

@@ -2,7 +2,7 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 408bc36237e01b4976cc96ca0444f05937bd517efb0ef378e0d1d4aac76b9e56
+-- hash: f08b7ddfe8e3ee85bfdc0af7c7320be85b073578c872a98b23b9c6e5bbbe5650
 
 name:           hledger-lib
 version:        1.9.99
@@ -105,7 +105,7 @@ library
     , ansi-terminal >=0.6.2.3
     , array
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-markup >=0.5.1
     , bytestring
     , cmdargs >=0.10
@@ -200,7 +200,7 @@ test-suite doctests
     , ansi-terminal >=0.6.2.3
     , array
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-markup >=0.5.1
     , bytestring
     , cmdargs >=0.10
@@ -295,7 +295,7 @@ test-suite easytests
     , ansi-terminal >=0.6.2.3
     , array
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-markup >=0.5.1
     , bytestring
     , cmdargs >=0.10
@@ -391,7 +391,7 @@ test-suite hunittests
     , ansi-terminal >=0.6.2.3
     , array
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-markup >=0.5.1
     , bytestring
     , cmdargs >=0.10

hledger-lib/package.yaml

@@ -40,7 +40,7 @@ extra-source-files:
 
 dependencies:
 - base >=4.8 && <4.12
-- base-compat >=0.8.1
+- base-compat == 0.10.*
 - ansi-terminal >=0.6.2.3
 - array
 - blaze-markup >=0.5.1

hledger-ui/hledger-ui.cabal

@@ -2,7 +2,7 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 0c78f681a99e0d6cc3ae1ff87b9397afc508292a6c412d00c85b5cdb5607b933
+-- hash: ecf98aad3ab1dc507594bf7da100bfa858c432a4e216023543e699f760a271d1
 
 name:           hledger-ui
 version:        1.9.99
@@ -69,7 +69,7 @@ executable hledger-ui
     , ansi-terminal >=0.6.2.3
     , async
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , cmdargs >=0.8
     , containers
     , data-default

hledger-ui/package.yaml

@@ -45,7 +45,7 @@ dependencies:
  - ansi-terminal >=0.6.2.3
  - async
  - base >=4.8 && <4.12
- - base-compat >=0.8.1
+ - base-compat == 0.10.*
  - cmdargs >=0.8
  - containers
  - data-default

hledger-web/hledger-web.cabal

@@ -2,7 +2,7 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: c000d351c61aeef057878385c2fbb01b696d20af9137ac2210902ba8de60bfaa
+-- hash: 7307cbaf625ff1863fcf59a405c2f148585b0cc13d02486494e726c5e609eb07
 
 name:           hledger-web
 version:        1.9.99
@@ -144,7 +144,7 @@ library
   build-depends:
       HUnit
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-html
     , blaze-markup
     , bytestring
@@ -195,7 +195,7 @@ executable hledger-web
   build-depends:
       HUnit
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-html
     , blaze-markup
     , bytestring
@@ -254,7 +254,7 @@ test-suite test
   build-depends:
       HUnit
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , blaze-html
     , blaze-markup
     , bytestring

hledger-web/package.yaml

@@ -65,7 +65,7 @@ dependencies:
 - hledger-lib >=1.9.99 && <2.0
 - hledger >=1.9.99 && <2.0
 - base >=4.8 && <4.12
-- base-compat >=0.8.1
+- base-compat == 0.10.*
 - blaze-html
 - blaze-markup
 - bytestring

hledger/hledger.cabal

@@ -2,7 +2,7 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 0f0ae8e75569c28e8c5987ba06696f6dbbbfc9334de43851eb1d1420ffc89d5a
+-- hash: c0eb869dc10f744521ca915b20715da6a280e9deb5089d74814f63c8b55c5cd9
 
 name:           hledger
 version:        1.9.99
@@ -116,7 +116,7 @@ library
     , HUnit
     , ansi-terminal >=0.6.2.3
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , bytestring
     , cmdargs >=0.10
     , containers
@@ -168,7 +168,7 @@ executable hledger
     , HUnit
     , ansi-terminal >=0.6.2.3
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , bytestring
     , cmdargs >=0.10
     , containers
@@ -222,7 +222,7 @@ test-suite test
     , HUnit
     , ansi-terminal >=0.6.2.3
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , bytestring
     , cmdargs >=0.10
     , containers
@@ -275,7 +275,7 @@ benchmark bench
     , HUnit
     , ansi-terminal >=0.6.2.3
     , base >=4.8 && <4.12
-    , base-compat >=0.8.1
+    , base-compat ==0.10.*
     , bytestring
     , cmdargs >=0.10
     , containers

hledger/package.yaml

@@ -81,7 +81,7 @@ dependencies:
 - hledger-lib >=1.9.99 && <2.0
 - ansi-terminal >=0.6.2.3
 - base >=4.8 && <4.12
-- base-compat >=0.8.1
+- base-compat == 0.10.*
 - bytestring
 - cmdargs >=0.10
 - containers