Resolving dependencies... Configuring mtl-2.2.1... Configuring old-locale-1.0.0.7... Building old-locale-1.0.0.7... Building mtl-2.2.1... Installed old-locale-1.0.0.7 Configuring old-time-1.1.0.3... Building old-time-1.1.0.3... Installed mtl-2.2.1 Installed old-time-1.1.0.3 Configuring xilinx-lava-4.0... Building xilinx-lava-4.0... Failed to install xilinx-lava-4.0 Build log ( /home/builder/.cabal/logs/xilinx-lava-4.0.log ): cabal: Entering directory '/tmp/cabal-tmp-26362/xilinx-lava-4.0' Configuring xilinx-lava-4.0... Building xilinx-lava-4.0... Preprocessing library xilinx-lava-4.0... Lava/Utils.hs:1:12: warning: -fglasgow-exts is deprecated: Use individual extensions instead [ 1 of 33] Compiling Lava.Utils ( Lava/Utils.hs, dist/build/Lava/Utils.o ) [ 2 of 33] Compiling Lava.TypeExpr ( Lava/TypeExpr.hs, dist/build/Lava/TypeExpr.o ) [ 3 of 33] Compiling Lava.Simulation ( Lava/Simulation.hs, dist/build/Lava/Simulation.o ) [ 4 of 33] Compiling Lava.Sim ( Lava/Sim.hs, dist/build/Lava/Sim.o ) Lava/Sim.hs:11:10: error: • No instance for (Applicative Sim) arising from the superclasses of an instance declaration • In the instance declaration for ‘Monad Sim’ cabal: Leaving directory '/tmp/cabal-tmp-26362/xilinx-lava-4.0' cabal: Error: some packages failed to install: xilinx-lava-4.0 failed during the building phase. The exception was: ExitFailure 1