Hi, I'm trying to install yesod using stack and lts-10.4, but I get the following result: stack install yesod aeson-1.2.3.0: configure aeson-1.2.3.0: build Progress: 1/26 -- While building custom Setup.hs for package aeson-1.2.3.0 using: /home/yotam/.stack/setup-exe-cache/i386-linux-nopie/Cabal-simple_mPHDZzAJ_2.0.1.0_ghc-8.2.2 --builddir=.stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0 build --ghc-options " -ddump-hi -ddump-to-file -fdiagnostics-color=always" Process exited with code: ExitFailure 1 Logs have been written to: /home/yotam/TheMafsidan/.stack-work/logs/aeson-1.2.3.0.log Configuring aeson-1.2.3.0... Preprocessing library for aeson-1.2.3.0.. Building library for aeson-1.2.3.0.. [ 1 of 24] Compiling Data.Aeson.Compat ( Data/Aeson/Compat.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Compat.o ) [ 2 of 24] Compiling Data.Aeson.Internal.Functions ( Data/Aeson/Internal/Functions.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Internal/Functions.o ) [ 3 of 24] Compiling Data.Aeson.Parser.UnescapePure ( pure/Data/Aeson/Parser/UnescapePure.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Parser/UnescapePure.o ) [ 4 of 24] Compiling Data.Aeson.Parser.Unescape ( Data/Aeson/Parser/Unescape.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Parser/Unescape.o ) [ 5 of 24] Compiling Data.Aeson.Types.Generic ( Data/Aeson/Types/Generic.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Types/Generic.o ) [ 6 of 24] Compiling Data.Aeson.Types.Internal ( Data/Aeson/Types/Internal.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Types/Internal.o ) [ 7 of 24] Compiling Data.Aeson.Parser.Internal ( Data/Aeson/Parser/Internal.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Parser/Internal.o ) [ 8 of 24] Compiling Data.Aeson.Parser ( Data/Aeson/Parser.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Parser.o ) [ 9 of 24] Compiling Data.Attoparsec.Time.Internal ( attoparsec-iso8601/Data/Attoparsec/Time/Internal.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Attoparsec/Time/Internal.o ) [10 of 24] Compiling Data.Attoparsec.Time ( attoparsec-iso8601/Data/Attoparsec/Time.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Attoparsec/Time.o ) [11 of 24] Compiling Data.Aeson.Parser.Time ( Data/Aeson/Parser/Time.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Parser/Time.o ) [12 of 24] Compiling Data.Aeson.Types.FromJSON ( Data/Aeson/Types/FromJSON.hs, .stack-work/dist/i386-linux-nopie/Cabal-2.0.1.0/build/Data/Aeson/Types/FromJSON.o ) /tmp/stack15763/aeson-1.2.3.0/Data/Aeson/Types/FromJSON.hs:108:1: error: Bad interface file: /home/yotam/.stack/snapshots/i386-linux-nopie/lts-10.4/8.2.2/lib/i386-linux-ghc-8.2.2/time-locale-compat-0.1.1.3-EeYCrKbfyeWLGJYmfXhrGy/Data/Time/Locale/Compat.hi Data.Binary.getPrim: end of file | 108 | import Data.Time.Locale.Compat (defaultTimeLocale) | ^^ Is this a matter of just waiting for packages to update to 8.2.2 or is it something I can change myself? Yotam