Resolving dependencies... Configuring StateVar-1.1.1.0... Configuring acquire-0.2.0.1... Building acquire-0.2.0.1... Building StateVar-1.1.1.0... Installed StateVar-1.1.1.0 Configuring base-orphans-0.8... Building base-orphans-0.8... Installed acquire-0.2.0.1 Configuring base-prelude-1.3... Building base-prelude-1.3... Installed base-orphans-0.8 Configuring bug-1.0.1... Building bug-1.0.1... Installed bug-1.0.1 Configuring cabal-doctest-1.0.6... Building cabal-doctest-1.0.6... Installed base-prelude-1.3 Configuring data-default-class-0.1.2.0... Building data-default-class-0.1.2.0... Installed data-default-class-0.1.2.0 Configuring hashable-1.2.7.0... Installed cabal-doctest-1.0.6 Configuring integer-logarithms-1.0.2.1... Building hashable-1.2.7.0... Building integer-logarithms-1.0.2.1... Installed integer-logarithms-1.0.2.1 Configuring primitive-0.6.4.0... Building primitive-0.6.4.0... Installed hashable-1.2.7.0 Configuring semigroups-0.18.5... Building semigroups-0.18.5... Installed semigroups-0.18.5 Configuring tagged-0.8.6... Building tagged-0.8.6... Installed tagged-0.8.6 Configuring th-abstraction-0.2.8.0... Building th-abstraction-0.2.8.0... Installed th-abstraction-0.2.8.0 Configuring transformers-compat-0.6.2... Building transformers-compat-0.6.2... Installed primitive-0.6.4.0 Configuring contravariant-1.5... Building contravariant-1.5... Installed transformers-compat-0.6.2 Configuring unordered-containers-0.2.9.0... Building unordered-containers-0.2.9.0... Installed contravariant-1.5 Configuring distributive-0.6... Building distributive-0.6... Installed distributive-0.6 Configuring vector-0.12.0.1... Building vector-0.12.0.1... Installed unordered-containers-0.2.9.0 Configuring scientific-0.3.6.2... Building scientific-0.3.6.2... Installed scientific-0.3.6.2 Configuring atomic-primops-0.8.2... Building atomic-primops-0.8.2... Installed atomic-primops-0.8.2 Configuring comonad-5.0.4... Building comonad-5.0.4... Installed comonad-5.0.4 Configuring attoparsec-0.13.2.2... Building attoparsec-0.13.2.2... Installed attoparsec-0.13.2.2 Configuring unagi-chan-0.4.1.0... Building unagi-chan-0.4.1.0... Installed vector-0.12.0.1 Configuring bifunctors-5.5.3... Building bifunctors-5.5.3... Installed unagi-chan-0.4.1.0 Configuring vector-th-unbox-0.2.1.6... Building vector-th-unbox-0.2.1.6... Installed vector-th-unbox-0.2.1.6 Configuring vector-builder-0.3.4.1... Building vector-builder-0.3.4.1... Installed bifunctors-5.5.3 Configuring math-functions-0.3.0.0... Installed vector-builder-0.3.4.1 Configuring semigroupoids-5.3.1... Building math-functions-0.3.0.0... Building semigroupoids-5.3.1... Installed math-functions-0.3.0.0 Configuring profunctors-5.3... Building profunctors-5.3... Installed semigroupoids-5.3.1 Configuring mwc-random-0.13.6.0... Building mwc-random-0.13.6.0... Installed profunctors-5.3 Configuring ptr-0.16.5... Building ptr-0.16.5... Installed mwc-random-0.13.6.0 Configuring foldl-1.4.2... Building foldl-1.4.2... Installed ptr-0.16.5 Installed foldl-1.4.2 Configuring potoki-core-2.2.2... Building potoki-core-2.2.2... Failed to install potoki-core-2.2.2 Build log ( /home/builder/.cabal/logs/ghc-8.4.3/potoki-core-2.2.2-2COipeGT6yD7dItcrdB3sn.log ): cabal: Entering directory '/tmp/cabal-tmp-24177/potoki-core-2.2.2' Configuring potoki-core-2.2.2... Preprocessing library for potoki-core-2.2.2.. Building library for potoki-core-2.2.2.. [ 1 of 15] Compiling Potoki.Core.Prelude ( library/Potoki/Core/Prelude.hs, dist/build/Potoki/Core/Prelude.o ) [ 2 of 15] Compiling Potoki.Core.Types ( library/Potoki/Core/Types.hs, dist/build/Potoki/Core/Types.o ) [ 3 of 15] Compiling Potoki.Core.IO.Fetch ( library/Potoki/Core/IO/Fetch.hs, dist/build/Potoki/Core/IO/Fetch.o ) [ 4 of 15] Compiling Potoki.Core.Fetch ( library/Potoki/Core/Fetch.hs, dist/build/Potoki/Core/Fetch.o ) [ 5 of 15] Compiling Potoki.Core.Transform.Instances ( library/Potoki/Core/Transform/Instances.hs, dist/build/Potoki/Core/Transform/Instances.o ) [ 6 of 15] Compiling Potoki.Core.Transform.State ( library/Potoki/Core/Transform/State.hs, dist/build/Potoki/Core/Transform/State.o ) [ 7 of 15] Compiling Potoki.Core.Transform.Concurrency ( library/Potoki/Core/Transform/Concurrency.hs, dist/build/Potoki/Core/Transform/Concurrency.o ) [ 8 of 15] Compiling Potoki.Core.Transform.Basic ( library/Potoki/Core/Transform/Basic.hs, dist/build/Potoki/Core/Transform/Basic.o ) [ 9 of 15] Compiling Potoki.Core.Transform.FileIO ( library/Potoki/Core/Transform/FileIO.hs, dist/build/Potoki/Core/Transform/FileIO.o ) [10 of 15] Compiling Potoki.Core.Transform.Attoparsec ( library/Potoki/Core/Transform/Attoparsec.hs, dist/build/Potoki/Core/Transform/Attoparsec.o ) [11 of 15] Compiling Potoki.Core.Produce ( library/Potoki/Core/Produce.hs, dist/build/Potoki/Core/Produce.o ) library/Potoki/Core/Produce.hs:227:13: error: Not in scope: ‘A.indicesUntil’ Module ‘Potoki.Core.Fetch’ does not export ‘indicesUntil’. | 227 | return (A.indicesUntil ref to, return ()) | ^^^^^^^^^^^^^^ cabal: Leaving directory '/tmp/cabal-tmp-24177/potoki-core-2.2.2' cabal: Error: some packages failed to install: potoki-core-2.2.2-2COipeGT6yD7dItcrdB3sn failed during the building phase. The exception was: ExitFailure 1