Resolving dependencies...
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Starting     nvim-hs-2.1.0.5
Building     nvim-hs-2.1.0.5
Failed to install nvim-hs-2.1.0.5
Build log ( /home/builder/.cabal/logs/ghc-8.10.2/nvim-hs-2.1.0.5-KixPKGUHm0JJCFVLMqJ1pT.log ):
cabal: Entering directory '/tmp/cabal-tmp-31681/nvim-hs-2.1.0.5'
Configuring nvim-hs-2.1.0.5...
Preprocessing library for nvim-hs-2.1.0.5..
Building library for nvim-hs-2.1.0.5..
[ 1 of 28] Compiling Neovim.Compat.Megaparsec ( library/Neovim/Compat/Megaparsec.hs, dist/build/Neovim/Compat/Megaparsec.o, dist/build/Neovim/Compat/Megaparsec.dyn_o )
[ 2 of 28] Compiling Neovim.Exceptions ( library/Neovim/Exceptions.hs, dist/build/Neovim/Exceptions.o, dist/build/Neovim/Exceptions.dyn_o )
[ 3 of 28] Compiling Neovim.Classes   ( library/Neovim/Classes.hs, dist/build/Neovim/Classes.o, dist/build/Neovim/Classes.dyn_o )
[ 4 of 28] Compiling Neovim.API.Parser ( library/Neovim/API/Parser.hs, dist/build/Neovim/API/Parser.o, dist/build/Neovim/API/Parser.dyn_o )
[ 5 of 28] Compiling Neovim.Log       ( library/Neovim/Log.hs, dist/build/Neovim/Log.o, dist/build/Neovim/Log.dyn_o )
[ 6 of 28] Compiling Neovim.Plugin.Classes ( library/Neovim/Plugin/Classes.hs, dist/build/Neovim/Plugin/Classes.o, dist/build/Neovim/Plugin/Classes.dyn_o )
[ 7 of 28] Compiling Neovim.Plugin.IPC.Classes ( library/Neovim/Plugin/IPC/Classes.hs, dist/build/Neovim/Plugin/IPC/Classes.o, dist/build/Neovim/Plugin/IPC/Classes.dyn_o )
[ 8 of 28] Compiling Neovim.Plugin.IPC ( library/Neovim/Plugin/IPC.hs, dist/build/Neovim/Plugin/IPC.o, dist/build/Neovim/Plugin/IPC.dyn_o )
[ 9 of 28] Compiling Neovim.Context.Internal ( library/Neovim/Context/Internal.hs, dist/build/Neovim/Context/Internal.o, dist/build/Neovim/Context/Internal.dyn_o )
[10 of 28] Compiling Neovim.Context   ( library/Neovim/Context.hs, dist/build/Neovim/Context.o, dist/build/Neovim/Context.dyn_o )
[11 of 28] Compiling Neovim.Plugin.Internal ( library/Neovim/Plugin/Internal.hs, dist/build/Neovim/Plugin/Internal.o, dist/build/Neovim/Plugin/Internal.dyn_o )
[12 of 28] Compiling Neovim.Config    ( library/Neovim/Config.hs, dist/build/Neovim/Config.o, dist/build/Neovim/Config.dyn_o )
[13 of 28] Compiling Neovim.RPC.Classes ( library/Neovim/RPC/Classes.hs, dist/build/Neovim/RPC/Classes.o, dist/build/Neovim/RPC/Classes.dyn_o )
[14 of 28] Compiling Neovim.RPC.Common ( library/Neovim/RPC/Common.hs, dist/build/Neovim/RPC/Common.o, dist/build/Neovim/RPC/Common.dyn_o )
[15 of 28] Compiling Neovim.RPC.FunctionCall ( library/Neovim/RPC/FunctionCall.hs, dist/build/Neovim/RPC/FunctionCall.o, dist/build/Neovim/RPC/FunctionCall.dyn_o )
[16 of 28] Compiling Neovim.RPC.EventHandler ( library/Neovim/RPC/EventHandler.hs, dist/build/Neovim/RPC/EventHandler.o, dist/build/Neovim/RPC/EventHandler.dyn_o )
[17 of 28] Compiling Neovim.API.TH    ( library/Neovim/API/TH.hs, dist/build/Neovim/API/TH.o, dist/build/Neovim/API/TH.dyn_o )

library/Neovim/API/TH.hs:88:20: error:
    Variable not in scope: env :: Name
   |
88 | plainTV' = PlainTV env
   |                    ^^^
cabal: Leaving directory '/tmp/cabal-tmp-31681/nvim-hs-2.1.0.5'
cabal: Error: some packages failed to install:
nvim-hs-2.1.0.5-KixPKGUHm0JJCFVLMqJ1pT failed during the building phase. The
exception was:
ExitFailure 1