Warning: The install command is a part of the legacy v1 style of cabal usage. Please switch to using either the new project style and the new-install command or the legacy v1-install alias as new-style projects will become the default in the next version of cabal-install. Please file a bug if you cannot replicate a working v1- use case with the new-style commands. For more information, see: https://wiki.haskell.org/Cabal/NewBuild Resolving dependencies... Starting base-orphans-0.8 Starting base64-bytestring-1.0.0.2 Starting StateVar-1.1.1.1 Starting base-compat-0.10.5 Building base-orphans-0.8 Building base64-bytestring-1.0.0.2 Building StateVar-1.1.1.1 Building base-compat-0.10.5 Completed base-orphans-0.8 Starting cabal-doctest-1.0.6 Completed StateVar-1.1.1.1 Starting call-stack-0.1.0 Building cabal-doctest-1.0.6 Building call-stack-0.1.0 Completed base64-bytestring-1.0.0.2 Starting data-default-class-0.1.2.0 Building data-default-class-0.1.2.0 Completed call-stack-0.1.0 Starting dlist-0.8.0.5 Building dlist-0.8.0.5 Completed data-default-class-0.1.2.0 Starting hashable-1.2.7.0 Completed cabal-doctest-1.0.6 Starting integer-logarithms-1.0.2.2 Building hashable-1.2.7.0 Building integer-logarithms-1.0.2.2 Completed base-compat-0.10.5 Starting old-locale-1.0.0.7 Completed dlist-0.8.0.5 Starting parallel-3.2.2.0 Building old-locale-1.0.0.7 Completed integer-logarithms-1.0.2.2 Starting primitive-0.6.4.0 Building parallel-3.2.2.0 Building primitive-0.6.4.0 Completed old-locale-1.0.0.7 Starting random-1.1 Completed hashable-1.2.7.0 Starting ref-tf-0.4.0.1 Building random-1.1 Building ref-tf-0.4.0.1 Completed parallel-3.2.2.0 Starting reflection-2.1.4 Building reflection-2.1.4 Completed ref-tf-0.4.0.1 Starting semigroups-0.18.5 Building semigroups-0.18.5 Completed random-1.1 Starting tagged-0.8.6 Building tagged-0.8.6 Completed semigroups-0.18.5 Starting th-abstraction-0.2.10.0 Building th-abstraction-0.2.10.0 Completed tagged-0.8.6 Starting time-locale-compat-0.1.1.5 Completed reflection-2.1.4 Starting transformers-compat-0.6.2 Building time-locale-compat-0.1.1.5 Building transformers-compat-0.6.2 Completed time-locale-compat-0.1.1.5 Starting unliftio-core-0.1.2.0 Building unliftio-core-0.1.2.0 Completed th-abstraction-0.2.10.0 Starting void-0.7.2 Building void-0.7.2 Completed unliftio-core-0.1.2.0 Starting contravariant-1.5 Completed transformers-compat-0.6.2 Starting data-default-instances-containers-0.0.1 Completed void-0.7.2 Starting data-default-instances-dlist-0.0.1 Building contravariant-1.5 Building data-default-instances-containers-0.0.1 Building data-default-instances-dlist-0.0.1 Completed primitive-0.6.4.0 Starting data-default-instances-old-locale-0.0.1 Building data-default-instances-old-locale-0.0.1 Completed data-default-instances-containers-0.0.1 Starting unordered-containers-0.2.10.0 Completed data-default-instances-dlist-0.0.1 Starting case-insensitive-1.2.0.11 Building unordered-containers-0.2.10.0 Completed data-default-instances-old-locale-0.0.1 Starting uuid-types-1.0.3 Building case-insensitive-1.2.0.11 Building uuid-types-1.0.3 Completed contravariant-1.5 Starting distributive-0.6 Completed case-insensitive-1.2.0.11 Starting transformers-base-0.4.5.2 Building transformers-base-0.4.5.2 Building distributive-0.6 Completed uuid-types-1.0.3 Starting exceptions-0.10.0 Building exceptions-0.10.0 Completed transformers-base-0.4.5.2 Starting vector-0.12.0.2 Building vector-0.12.0.2 Completed distributive-0.6 Starting scientific-0.3.6.2 Building scientific-0.3.6.2 Completed exceptions-0.10.0 Starting data-default-0.7.1.1 Building data-default-0.7.1.1 Completed unordered-containers-0.2.10.0 Starting http-types-0.12.2 Building http-types-0.12.2 Completed data-default-0.7.1.1 Starting comonad-5.0.4 Completed scientific-0.3.6.2 Starting attoparsec-0.13.2.2 Building attoparsec-0.13.2.2 Building comonad-5.0.4 Completed http-types-0.12.2 Completed comonad-5.0.4 Starting bifunctors-5.5.3 Building bifunctors-5.5.3 Completed attoparsec-0.13.2.2 Completed bifunctors-5.5.3 Starting profunctors-5.3 Starting semigroupoids-5.3.2 Building profunctors-5.3 Building semigroupoids-5.3.2 Completed vector-0.12.0.2 Starting aeson-1.4.2.0 Completed profunctors-5.3 Starting invariant-0.5.1 Building aeson-1.4.2.0 Building invariant-0.5.1 Completed semigroupoids-5.3.2 Starting free-5.1 Building free-5.1 Completed invariant-0.5.1 Completed free-5.1 Starting adjunctions-4.4 Building adjunctions-4.4 Completed aeson-1.4.2.0 Completed adjunctions-4.4 Starting kan-extensions-5.2 Building kan-extensions-5.2 Completed kan-extensions-5.2 Starting lens-4.17 Building lens-4.17 Completed lens-4.17 Starting jsaddle-0.9.6.0 Building jsaddle-0.9.6.0 Completed jsaddle-0.9.6.0 Starting jsaddle-wkwebview-0.9.6.0 Building jsaddle-wkwebview-0.9.6.0 Failed to install jsaddle-wkwebview-0.9.6.0 Build log ( /home/builder/.cabal/logs/ghc-8.6.3/jsaddle-wkwebview-0.9.6.0-JxnkcEH2f2ME7fbJuT91Xo.log ): cabal: Entering directory '/tmp/cabal-tmp-13286/jsaddle-wkwebview-0.9.6.0' Configuring jsaddle-wkwebview-0.9.6.0... Preprocessing library for jsaddle-wkwebview-0.9.6.0.. Building library for jsaddle-wkwebview-0.9.6.0.. [1 of 2] Compiling Language.Javascript.JSaddle.WKWebView.Internal ( src/Language/Javascript/JSaddle/WKWebView/Internal.hs, dist/build/Language/Javascript/JSaddle/WKWebView/Internal.o ) [2 of 2] Compiling Language.Javascript.JSaddle.WKWebView ( src-ghc/Language/Javascript/JSaddle/WKWebView.hs, dist/build/Language/Javascript/JSaddle/WKWebView.o ) gcc: error trying to exec 'cc1obj': execvp: No such file or directory `gcc' failed in phase `C Compiler'. (Exit code: 1) cabal: Leaving directory '/tmp/cabal-tmp-13286/jsaddle-wkwebview-0.9.6.0' cabal: Error: some packages failed to install: jsaddle-wkwebview-0.9.6.0-JxnkcEH2f2ME7fbJuT91Xo failed during the building phase. The exception was: ExitFailure 1