Resolving dependencies... Configuring syb-0.6... Configuring mtl-2.2.1... Building mtl-2.2.1... Building syb-0.6... Installed syb-0.6 Installed mtl-2.2.1 Configuring tersmu-0.2.1... Building tersmu-0.2.1... Failed to install tersmu-0.2.1 Build log ( /home/builder/.cabal/logs/tersmu-0.2.1.log ): cabal: Entering directory '/tmp/cabal-tmp-27812/tersmu-0.2.1' Configuring tersmu-0.2.1... Building tersmu-0.2.1... Preprocessing executable 'tersmu' for tersmu-0.2.1... [ 1 of 16] Compiling Util ( Util.hs, dist/build/tersmu/tersmu-tmp/Util.o ) [ 2 of 16] Compiling Pappy.Pos ( Pappy/Pos.hs, dist/build/tersmu/tersmu-tmp/Pappy/Pos.o ) [ 3 of 16] Compiling Pappy.Basic ( Pappy/Basic.hs, dist/build/tersmu/tersmu-tmp/Pappy/Basic.o ) [ 4 of 16] Compiling Pappy.Parse ( Pappy/Parse.hs, dist/build/tersmu/tersmu-tmp/Pappy/Parse.o ) [ 5 of 16] Compiling Morphology ( Morphology.hs, dist/build/tersmu/tersmu-tmp/Morphology.o ) [ 6 of 16] Compiling Morph ( Morph.hs, dist/build/tersmu/tersmu-tmp/Morph.o ) [ 7 of 16] Compiling Logic ( Logic.hs, dist/build/tersmu/tersmu-tmp/Logic.o ) [ 8 of 16] Compiling JboSyntax ( JboSyntax.hs, dist/build/tersmu/tersmu-tmp/JboSyntax.o ) [ 9 of 16] Compiling Lojban ( Lojban.hs, dist/build/tersmu/tersmu-tmp/Lojban.o ) Lojban.pappy:2936:17: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:3151:9: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:3179:13: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:3205:17: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:3765:17: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:3800:9: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:4578:13: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:4592:29: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... Lojban.pappy:4603:25: warning: [-Woverlapping-patterns] Pattern match is redundant In a case alternative: Parsed _ _ _ -> ... [10 of 16] Compiling ParseText ( ParseText.hs, dist/build/tersmu/tersmu-tmp/ParseText.o ) [11 of 16] Compiling Bindful ( Bindful.hs, dist/build/tersmu/tersmu-tmp/Bindful.o ) [12 of 16] Compiling JboProp ( JboProp.hs, dist/build/tersmu/tersmu-tmp/JboProp.o ) [13 of 16] Compiling ParseM ( ParseM.hs, dist/build/tersmu/tersmu-tmp/ParseM.o ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.1.20161018 for x86_64-unknown-linux): get_op runContT Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug cabal: Leaving directory '/tmp/cabal-tmp-27812/tersmu-0.2.1' cabal: Error: some packages failed to install: tersmu-0.2.1 failed during the building phase. The exception was: ExitFailure 1