Resolving dependencies... Configuring base-orphans-0.5.4... Configuring generic-deriving-1.11.1... Building base-orphans-0.5.4... Building generic-deriving-1.11.1... Installed base-orphans-0.5.4 Configuring loop-0.3.0... Building loop-0.3.0... Configuring primitive-0.6.1.0... Installed loop-0.3.0 Building primitive-0.6.1.0... Configuring mtl-2.2.1... Installed primitive-0.6.1.0 Building mtl-2.2.1... Configuring semigroups-0.18.2... Installed mtl-2.2.1 Building semigroups-0.18.2... Configuring split-0.2.3.1... Installed semigroups-0.18.2 Building split-0.2.3.1... Configuring random-1.1... Installed split-0.2.3.1 Building random-1.1... Configuring storable-complex-0.2.2... Installed generic-deriving-1.11.1 Building storable-complex-0.2.2... Configuring stm-2.4.4.1... Installed storable-complex-0.2.2 Building stm-2.4.4.1... Configuring syb-0.6... Installed random-1.1 Building syb-0.6... Configuring text-1.2.2.1... Installed stm-2.4.4.1 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 fclabels-2.0.3.2... Building fclabels-2.0.3.2... Configuring vector-0.11.0.0... Installed fclabels-2.0.3.2 Building vector-0.11.0.0... Configuring StateVar-1.1.0.4... Installed text-1.2.2.1 Building StateVar-1.1.0.4... Configuring syz-0.2.0.0... Installed StateVar-1.1.0.4 Building syz-0.2.0.0... Configuring haskell-src-1.0.2.0... Installed syz-0.2.0.0 Building haskell-src-1.0.2.0... Configuring tagged-0.8.5... Installed haskell-src-1.0.2.0 Building tagged-0.8.5... Installed vector-0.11.0.0 Configuring hashable-1.2.4.0... Building hashable-1.2.4.0... Installed tagged-0.8.5 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed hashable-1.2.4.0 Configuring matrix-0.3.5.0... Building matrix-0.3.5.0... Configuring hmatrix-0.18.0.0... Installed parsec-3.1.11 Building hmatrix-0.18.0.0... Installed matrix-0.3.5.0 Configuring distributive-0.5.0.2... Building distributive-0.5.0.2... Installed distributive-0.5.0.2 Configuring unordered-containers-0.2.7.1... Building unordered-containers-0.2.7.1... Configuring void-0.7.1... Installed unordered-containers-0.2.7.1 Building void-0.7.1... Configuring language-fortran-0.5.1... Installed void-0.7.1 Building language-fortran-0.5.1... Installed hmatrix-0.18.0.0 Configuring contravariant-1.4... Building contravariant-1.4... Configuring uniplate-1.6.12... Installed contravariant-1.4 Building uniplate-1.6.12... Installed uniplate-1.6.12 Configuring comonad-5... Building comonad-5... Installed language-fortran-0.5.1 Installed comonad-5 Configuring camfort-0.62... Building camfort-0.62... Failed to install camfort-0.62 Build log ( /home/builder/.cabal/logs/camfort-0.62.log ): cabal: Entering directory '/tmp/cabal-tmp-16992/camfort-0.62' Configuring camfort-0.62... Building camfort-0.62... Preprocessing library camfort-0.62... [ 1 of 23] Compiling Helpers ( Helpers.hs, dist/build/Helpers.o ) [ 2 of 23] Compiling Extensions.UnitsEnvironment ( Extensions/UnitsEnvironment.hs, dist/build/Extensions/UnitsEnvironment.o ) [ 3 of 23] Compiling Extensions.UnitsSolveHMatrix ( Extensions/UnitsSolveHMatrix.hs, dist/build/Extensions/UnitsSolveHMatrix.o ) [ 4 of 23] Compiling Extensions.UnitsSolve ( Extensions/UnitsSolve.hs, dist/build/Extensions/UnitsSolve.o ) Extensions/UnitsSolve.hs:107:16: error: Ambiguous occurrence ‘rref’ It could refer to either ‘Data.Matrix.rref’, imported from ‘Data.Matrix’ at Extensions/UnitsSolve.hs:22:1-18 or ‘Extensions.UnitsSolveHMatrix.rref’, imported from ‘Extensions.UnitsSolveHMatrix’ at Extensions/UnitsSolve.hs:31:1-35 (and originally defined at Extensions/UnitsSolveHMatrix.hs:48:1-4) Extensions/UnitsSolve.hs:120:16: error: Ambiguous occurrence ‘rref’ It could refer to either ‘Data.Matrix.rref’, imported from ‘Data.Matrix’ at Extensions/UnitsSolve.hs:22:1-18 or ‘Extensions.UnitsSolveHMatrix.rref’, imported from ‘Extensions.UnitsSolveHMatrix’ at Extensions/UnitsSolve.hs:31:1-35 (and originally defined at Extensions/UnitsSolveHMatrix.hs:48:1-4) cabal: Leaving directory '/tmp/cabal-tmp-16992/camfort-0.62' cabal: Error: some packages failed to install: camfort-0.62 failed during the building phase. The exception was: ExitFailure 1