Resolving dependencies... Configuring base-orphans-0.5.4... Configuring fail-4.9.0.0... Building base-orphans-0.5.4... Building fail-4.9.0.0... Configuring dlist-0.8.0.2... Installed fail-4.9.0.0 Building dlist-0.8.0.2... Configuring mtl-2.2.1... Installed base-orphans-0.5.4 Building mtl-2.2.1... Configuring parallel-3.2.1.0... Installed dlist-0.8.0.2 Building parallel-3.2.1.0... Configuring prelude-extras-0.4.0.3... Installed mtl-2.2.1 Building prelude-extras-0.4.0.3... Configuring reflection-2.1.2... Installed parallel-3.2.1.0 Building reflection-2.1.2... Configuring semigroups-0.18.2... Installed prelude-extras-0.4.0.3 Building semigroups-0.18.2... Configuring primitive-0.6.1.0... Installed semigroups-0.18.2 Configuring stm-2.4.4.1... Installed reflection-2.1.2 Building primitive-0.6.1.0... Building stm-2.4.4.1... Configuring syb-0.6... Installed stm-2.4.4.1 Building syb-0.6... Configuring text-1.2.2.1... Installed primitive-0.6.1.0 Building text-1.2.2.1... Configuring transformers-compat-0.5.1.4... Installed syb-0.6 Building transformers-compat-0.5.1.4... Installed transformers-compat-0.5.1.4 Configuring StateVar-1.1.0.4... Building StateVar-1.1.0.4... Installed StateVar-1.1.0.4 Configuring vector-0.11.0.0... Building vector-0.11.0.0... Configuring exceptions-0.8.3... Installed text-1.2.2.1 Building exceptions-0.8.3... Configuring tagged-0.8.5... Installed exceptions-0.8.3 Building tagged-0.8.5... Installed tagged-0.8.5 Configuring distributive-0.5.0.2... Building distributive-0.5.0.2... Configuring hashable-1.2.4.0... Installed distributive-0.5.0.2 Building hashable-1.2.4.0... Installed vector-0.11.0.0 Installed hashable-1.2.4.0 Configuring scientific-0.3.4.9... Configuring void-0.7.1... Building void-0.7.1... Building scientific-0.3.4.9... Configuring unordered-containers-0.2.7.1... Installed void-0.7.1 Building unordered-containers-0.2.7.1... Configuring contravariant-1.4... Installed scientific-0.3.4.9 Building contravariant-1.4... Installed contravariant-1.4 Configuring attoparsec-0.13.1.0... Building attoparsec-0.13.1.0... Configuring comonad-5... Installed unordered-containers-0.2.7.1 Building comonad-5... Installed attoparsec-0.13.1.0 Configuring aeson-0.11.2.1... Building aeson-0.11.2.1... Installed comonad-5 Configuring bifunctors-5.4.1... Building bifunctors-5.4.1... Installed bifunctors-5.4.1 Configuring profunctors-5.2... Building profunctors-5.2... Configuring semigroupoids-5.1... Installed aeson-0.11.2.1 Building semigroupoids-5.1... Installed profunctors-5.2 Installed semigroupoids-5.1 Configuring free-4.12.4... Building free-4.12.4... Installed free-4.12.4 Configuring adjunctions-4.3... Building adjunctions-4.3... Installed adjunctions-4.3 Configuring kan-extensions-5.0.1... Building kan-extensions-5.0.1... Installed kan-extensions-5.0.1 Configuring lens-4.15.1... Building lens-4.15.1... Installed lens-4.15.1 Configuring stratux-types-0.0.6... Building stratux-types-0.0.6... Failed to install stratux-types-0.0.6 Build log ( /home/builder/.cabal/logs/stratux-types-0.0.6.log ): cabal: Entering directory '/tmp/cabal-tmp-23862/stratux-types-0.0.6' [1 of 1] Compiling Main ( /tmp/cabal-tmp-23862/stratux-types-0.0.6/dist/setup/setup.hs, /tmp/cabal-tmp-23862/stratux-types-0.0.6/dist/setup/Main.o ) Linking /tmp/cabal-tmp-23862/stratux-types-0.0.6/dist/setup/setup ... Configuring stratux-types-0.0.6... Building stratux-types-0.0.6... Preprocessing library stratux-types-0.0.6... [ 1 of 12] Compiling Data.Aviation.Stratux.Types.Word8s ( src/Data/Aviation/Stratux/Types/Word8s.hs, dist/build/Data/Aviation/Stratux/Types/Word8s.o ) [ 2 of 12] Compiling Data.Aviation.Stratux.Types.UTCTimes ( src/Data/Aviation/Stratux/Types/UTCTimes.hs, dist/build/Data/Aviation/Stratux/Types/UTCTimes.o ) [ 3 of 12] Compiling Data.Aviation.Stratux.Types.TargetType ( src/Data/Aviation/Stratux/Types/TargetType.hs, dist/build/Data/Aviation/Stratux/Types/TargetType.o ) src/Data/Aviation/Stratux/Types/TargetType.hs:38:4: error: • Constraint ‘Num a’ in the type of ‘_TargetTypeNum’ constrains only the class type variables Use ConstrainedClassMethods to allow it • When checking the class method: _TargetTypeNum :: forall a. (AsTargetTypeNum a, Num a, Eq a) => Prism' a TargetType In the class declaration for ‘AsTargetTypeNum’ src/Data/Aviation/Stratux/Types/TargetType.hs:38:4: error: • Constraint ‘Eq a’ in the type of ‘_TargetTypeNum’ constrains only the class type variables Use ConstrainedClassMethods to allow it • When checking the class method: _TargetTypeNum :: forall a. (AsTargetTypeNum a, Num a, Eq a) => Prism' a TargetType In the class declaration for ‘AsTargetTypeNum’ cabal: Leaving directory '/tmp/cabal-tmp-23862/stratux-types-0.0.6' cabal: Error: some packages failed to install: stratux-types-0.0.6 failed during the building phase. The exception was: ExitFailure 1