Resolving dependencies... Configuring call-stack-0.1.0... Configuring mtl-2.2.1... Building call-stack-0.1.0... Building mtl-2.2.1... Installed call-stack-0.1.0 Configuring text-1.2.2.1... Building text-1.2.2.1... Configuring HUnit-1.5.0.0... Installed mtl-2.2.1 Building HUnit-1.5.0.0... Installed HUnit-1.5.0.0 Installed text-1.2.2.1 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed parsec-3.1.11 Configuring Folly-0.1.4.4... Building Folly-0.1.4.4... Failed to install Folly-0.1.4.4 Build log ( /home/builder/.cabal/logs/Folly-0.1.4.4.log ): cabal: Entering directory '/tmp/cabal-tmp-20093/Folly-0.1.4.4' Configuring Folly-0.1.4.4... Building Folly-0.1.4.4... Preprocessing library Folly-0.1.4.4... [1 of 7] Compiling Folly.Utils ( src/Folly/Utils.hs, dist/build/Folly/Utils.o ) [2 of 7] Compiling Folly.Lexer ( src/Folly/Lexer.hs, dist/build/Folly/Lexer.o ) [3 of 7] Compiling Folly.Formula ( src/Folly/Formula.hs, dist/build/Folly/Formula.o ) [4 of 7] Compiling Folly.Theorem ( src/Folly/Theorem.hs, dist/build/Folly/Theorem.o ) [5 of 7] Compiling Folly.Parser ( src/Folly/Parser.hs, dist/build/Folly/Parser.o ) [6 of 7] Compiling Folly.Unification ( src/Folly/Unification.hs, dist/build/Folly/Unification.o ) [7 of 7] Compiling Folly.Resolution ( src/Folly/Resolution.hs, dist/build/Folly/Resolution.o ) Preprocessing executable 'Folly' for Folly-0.1.4.4... [1 of 8] Compiling Folly.Utils ( src/Folly/Utils.hs, dist/build/Folly/Folly-tmp/Folly/Utils.o ) [2 of 8] Compiling Folly.Lexer ( src/Folly/Lexer.hs, dist/build/Folly/Folly-tmp/Folly/Lexer.o ) [3 of 8] Compiling Folly.Formula ( src/Folly/Formula.hs, dist/build/Folly/Folly-tmp/Folly/Formula.o ) [4 of 8] Compiling Folly.Theorem ( src/Folly/Theorem.hs, dist/build/Folly/Folly-tmp/Folly/Theorem.o ) [5 of 8] Compiling Folly.Parser ( src/Folly/Parser.hs, dist/build/Folly/Folly-tmp/Folly/Parser.o ) [6 of 8] Compiling Folly.Unification ( src/Folly/Unification.hs, dist/build/Folly/Folly-tmp/Folly/Unification.o ) [7 of 8] Compiling Folly.Resolution ( src/Folly/Resolution.hs, dist/build/Folly/Folly-tmp/Folly/Resolution.o ) [8 of 8] Compiling Main ( src/Main.hs, dist/build/Folly/Folly-tmp/Main.o ) Linking dist/build/Folly/Folly ... Preprocessing executable 'Folly-tests' for Folly-0.1.4.4... [ 1 of 13] Compiling Folly.Utils ( src/Folly/Utils.hs, dist/build/Folly-tests/Folly-tests-tmp/Folly/Utils.o ) [ 2 of 13] Compiling Folly.Lexer ( src/Folly/Lexer.hs, dist/build/Folly-tests/Folly-tests-tmp/Folly/Lexer.o ) [ 3 of 13] Compiling Folly.LexerTests ( test/Folly/LexerTests.hs, dist/build/Folly-tests/Folly-tests-tmp/Folly/LexerTests.o ) test/Folly/LexerTests.hs:4:1: error: Failed to load interface for ‘Folly.TestUtils’ Perhaps you meant Folly.Utils (needs flag -package-key Folly-0.1.4.4) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-20093/Folly-0.1.4.4' cabal: Error: some packages failed to install: Folly-0.1.4.4 failed during the building phase. The exception was: ExitFailure 1