Resolving dependencies... Starting StateVar-1.2.2 Starting abstract-par-0.3.3 Starting base-orphans-0.8.6 Starting base-compat-0.12.1 Building abstract-par-0.3.3 Building StateVar-1.2.2 Building base-orphans-0.8.6 Building base-compat-0.12.1 Completed abstract-par-0.3.3 Starting cereal-0.5.8.2 Completed StateVar-1.2.2 Starting data-default-class-0.1.2.0 Building cereal-0.5.8.2 Building data-default-class-0.1.2.0 Completed data-default-class-0.1.2.0 Starting dlist-1.0 Building dlist-1.0 Completed base-orphans-0.8.6 Starting indexed-traversable-0.1.2 Building indexed-traversable-0.1.2 Completed base-compat-0.12.1 Starting integer-logarithms-1.0.3.1 Building integer-logarithms-1.0.3.1 Completed dlist-1.0 Starting parallel-3.2.2.0 Building parallel-3.2.2.0 Completed integer-logarithms-1.0.3.1 Starting primitive-0.7.3.0 Completed cereal-0.5.8.2 Starting splitmix-0.1.0.4 Building primitive-0.7.3.0 Building splitmix-0.1.0.4 Completed indexed-traversable-0.1.2 Starting tagged-0.8.6.1 Building tagged-0.8.6.1 Completed parallel-3.2.2.0 Starting th-abstraction-0.4.3.0 Building th-abstraction-0.4.3.0 Completed splitmix-0.1.0.4 Starting transformers-compat-0.7.1 Building transformers-compat-0.7.1 Completed tagged-0.8.6.1 Starting contravariant-1.5.5 Building contravariant-1.5.5 Completed transformers-compat-0.7.1 Starting hashable-1.4.0.2 Building hashable-1.4.0.2 Completed th-abstraction-0.4.3.0 Starting random-1.2.1 Building random-1.2.1 Completed contravariant-1.5.5 Starting distributive-0.6.2.1 Building distributive-0.6.2.1 Completed hashable-1.4.0.2 Starting unordered-containers-0.2.16.0 Completed distributive-0.6.2.1 Starting time-compat-1.9.6.1 Building unordered-containers-0.2.16.0 Building time-compat-1.9.6.1 Completed primitive-0.7.3.0 Starting text-short-0.1.5 Building text-short-0.1.5 Completed time-compat-1.9.6.1 Starting data-fix-0.3.2 Building data-fix-0.3.2 Completed random-1.2.1 Starting async-2.2.4 Building async-2.2.4 Completed text-short-0.1.5 Starting OneTuple-0.3.1 Building OneTuple-0.3.1 Completed data-fix-0.3.2 Starting comonad-5.0.8 Building comonad-5.0.8 Completed async-2.2.4 Starting vector-0.12.3.1 Completed OneTuple-0.3.1 Starting scientific-0.3.7.0 Building vector-0.12.3.1 Building scientific-0.3.7.0 Completed unordered-containers-0.2.16.0 Starting uuid-types-1.0.5 Building uuid-types-1.0.5 Completed comonad-5.0.8 Starting monad-par-extras-0.3.3 Building monad-par-extras-0.3.3 Completed scientific-0.3.7.0 Starting abstract-deque-0.3 Building abstract-deque-0.3 Completed uuid-types-1.0.5 Starting QuickCheck-2.14.2 Building QuickCheck-2.14.2 Completed monad-par-extras-0.3.3 Starting base-compat-batteries-0.12.1 Building base-compat-batteries-0.12.1 Completed abstract-deque-0.3 Starting bifunctors-5.5.11 Building bifunctors-5.5.11 Completed base-compat-batteries-0.12.1 Starting attoparsec-0.14.3 Building attoparsec-0.14.3 Completed bifunctors-5.5.11 Starting semigroupoids-5.3.6 Building semigroupoids-5.3.6 Completed attoparsec-0.14.3 Starting assoc-1.0.2 Building assoc-1.0.2 Completed assoc-1.0.2 Starting these-1.1.1.1 Building these-1.1.1.1 Completed QuickCheck-2.14.2 Completed these-1.1.1.1 Starting strict-0.4.0.1 Building strict-0.4.0.1 Completed semigroupoids-5.3.6 Completed strict-0.4.0.1 Completed vector-0.12.3.1 Starting vector-th-unbox-0.2.2 Starting vector-binary-instances-0.2.5.2 Starting vector-algorithms-0.8.0.4 Starting math-functions-0.3.4.2 Building vector-th-unbox-0.2.2 Building vector-binary-instances-0.2.5.2 Building vector-algorithms-0.8.0.4 Building math-functions-0.3.4.2 Completed vector-binary-instances-0.2.5.2 Starting indexed-traversable-instances-0.1.1 Completed vector-th-unbox-0.2.2 Building indexed-traversable-instances-0.1.1 Completed indexed-traversable-instances-0.1.1 Starting witherable-0.4.2 Starting semialign-1.2.0.1 Building witherable-0.4.2 Building semialign-1.2.0.1 Completed math-functions-0.3.4.2 Starting mwc-random-0.15.0.2 Building mwc-random-0.15.0.2 Completed semialign-1.2.0.1 Completed vector-algorithms-0.8.0.4 Starting dense-linear-algebra-0.1.0.0 Completed witherable-0.4.2 Starting aeson-2.0.3.0 Building dense-linear-algebra-0.1.0.0 Building aeson-2.0.3.0 Completed dense-linear-algebra-0.1.0.0 Completed mwc-random-0.15.0.2 Starting monad-par-0.3.5 Building monad-par-0.3.5 Completed monad-par-0.3.5 Completed aeson-2.0.3.0 Starting statistics-0.16.0.0 Building statistics-0.16.0.0 Failed to install statistics-0.16.0.0 Build log ( /home/builder/.cabal/logs/ghc-8.10.2/statistics-0.16.0.0-9mKylYYnS88HO24QFuMq56.log ): cabal: Entering directory '/tmp/cabal-tmp-8585/statistics-0.16.0.0' Configuring statistics-0.16.0.0... Preprocessing library for statistics-0.16.0.0.. Building library for statistics-0.16.0.0.. [ 1 of 48] Compiling Statistics.Correlation.Kendall ( Statistics/Correlation/Kendall.hs, dist/build/Statistics/Correlation/Kendall.o, dist/build/Statistics/Correlation/Kendall.dyn_o ) [ 2 of 48] Compiling Statistics.Distribution.Poisson.Internal ( Statistics/Distribution/Poisson/Internal.hs, dist/build/Statistics/Distribution/Poisson/Internal.o, dist/build/Statistics/Distribution/Poisson/Internal.dyn_o ) [ 3 of 48] Compiling Statistics.Function ( Statistics/Function.hs, dist/build/Statistics/Function.o, dist/build/Statistics/Function.dyn_o ) [ 4 of 48] Compiling Statistics.Internal ( Statistics/Internal.hs, dist/build/Statistics/Internal.o, dist/build/Statistics/Internal.dyn_o ) [ 5 of 48] Compiling Statistics.Quantile ( Statistics/Quantile.hs, dist/build/Statistics/Quantile.o, dist/build/Statistics/Quantile.dyn_o ) [ 6 of 48] Compiling Statistics.Sample.Histogram ( Statistics/Sample/Histogram.hs, dist/build/Statistics/Sample/Histogram.o, dist/build/Statistics/Sample/Histogram.dyn_o ) [ 7 of 48] Compiling Statistics.Sample.Internal ( Statistics/Sample/Internal.hs, dist/build/Statistics/Sample/Internal.o, dist/build/Statistics/Sample/Internal.dyn_o ) [ 8 of 48] Compiling Statistics.Distribution ( Statistics/Distribution.hs, dist/build/Statistics/Distribution.o, dist/build/Statistics/Distribution.dyn_o ) [ 9 of 48] Compiling Statistics.Distribution.Uniform ( Statistics/Distribution/Uniform.hs, dist/build/Statistics/Distribution/Uniform.o, dist/build/Statistics/Distribution/Uniform.dyn_o ) [10 of 48] Compiling Statistics.Distribution.Transform ( Statistics/Distribution/Transform.hs, dist/build/Statistics/Distribution/Transform.o, dist/build/Statistics/Distribution/Transform.dyn_o ) [11 of 48] Compiling Statistics.Distribution.StudentT ( Statistics/Distribution/StudentT.hs, dist/build/Statistics/Distribution/StudentT.o, dist/build/Statistics/Distribution/StudentT.dyn_o ) [12 of 48] Compiling Statistics.Distribution.Poisson ( Statistics/Distribution/Poisson.hs, dist/build/Statistics/Distribution/Poisson.o, dist/build/Statistics/Distribution/Poisson.dyn_o ) [13 of 48] Compiling Statistics.Distribution.Hypergeometric ( Statistics/Distribution/Hypergeometric.hs, dist/build/Statistics/Distribution/Hypergeometric.o, dist/build/Statistics/Distribution/Hypergeometric.dyn_o ) [14 of 48] Compiling Statistics.Distribution.Geometric ( Statistics/Distribution/Geometric.hs, dist/build/Statistics/Distribution/Geometric.o, dist/build/Statistics/Distribution/Geometric.dyn_o ) [15 of 48] Compiling Statistics.Distribution.Gamma ( Statistics/Distribution/Gamma.hs, dist/build/Statistics/Distribution/Gamma.o, dist/build/Statistics/Distribution/Gamma.dyn_o ) Statistics/Distribution/Gamma.hs:141:25: error: " Variable not in scope: l? :: Double " Perhaps you meant l (line 141) | 141 | mean (GD a l) = a * l? | ^^ cabal: Leaving directory '/tmp/cabal-tmp-8585/statistics-0.16.0.0' cabal: Error: some packages failed to install: statistics-0.16.0.0-9mKylYYnS88HO24QFuMq56 failed during the building phase. The exception was: ExitFailure 1