Support aeson 2.2.0

Author: wz1000

cabal.project

@@ -18,3 +18,6 @@ package lsp-types
   -- has very many independent modules 
   ghc-options: -j4
 
+allow-newer:
+  generic-lens:text,
+  generic-lens-core:text,

lsp-types/lsp-types.cabal

@@ -69,7 +69,7 @@ library
     UndecidableInstances
 
   build-depends:
-    , aeson             >=1.2.2.0 && <2.2
+    , aeson             >=1.2.2.0 && <2.3
     , base              >=4.11    && <5
     , binary
     , containers
@@ -87,7 +87,7 @@ library
     , mtl               <2.4
     , prettyprinter     
     , network-uri       >=2.6
-    , row-types
+    , row-types         >=1.0
     , safe
     , some
     , template-haskell

lsp-types/src/Language/LSP/Protocol/Types/Common.hs

@@ -183,7 +183,11 @@ instance Semigroup s => Semigroup (s |? Null) where
 -- in both aeson-1 and aeson-2
 
 -- | Include a value in an JSON object optionally, omitting it if it is 'Nothing'.
+#if MIN_VERSION_aeson(2,2,0)
+(.=?) :: (J.KeyValue e kv, J.ToJSON v) => String -> Maybe v -> [kv]
+#else
 (.=?) :: (J.KeyValue kv, J.ToJSON v) => String -> Maybe v -> [kv]
+#endif
 k .=? v = case v of
   Just v' -> [fromString k J..= v']
   Nothing -> mempty