Resolving dependencies... Configuring colour-2.3.3... Configuring mtl-2.2.1... Building colour-2.3.3... Building mtl-2.2.1... Installed mtl-2.2.1 Configuring multiset-comb-0.2.4.1... Building multiset-comb-0.2.4.1... Configuring primes-0.2.1.0... Installed colour-2.3.3 Building primes-0.2.1.0... Installed multiset-comb-0.2.4.1 Configuring primitive-0.6.2.0... Configuring random-1.1... Installed primes-0.2.1.0 Building primitive-0.6.2.0... Building random-1.1... Configuring split-0.2.3.1... Installed random-1.1 Building split-0.2.3.1... Configuring text-1.2.2.1... Installed split-0.2.3.1 Building text-1.2.2.1... Configuring utf8-string-1.0.1.1... Installed primitive-0.6.2.0 Building utf8-string-1.0.1.1... Configuring SG-1.0... Installed utf8-string-1.0.1.1 Building SG-1.0... Configuring logict-0.6.0.2... Failed to install SG-1.0 Build log ( /home/builder/.cabal/logs/SG-1.0.log ): cabal: Entering directory '/tmp/cabal-tmp-10255/SG-1.0' Configuring SG-1.0... Building SG-1.0... Preprocessing library SG-1.0... [1 of 8] Compiling Data.SG.Vector ( Data/SG/Vector.hs, dist/build/Data/SG/Vector.o ) [2 of 8] Compiling Data.SG.Vector.Basic ( Data/SG/Vector/Basic.hs, dist/build/Data/SG/Vector/Basic.o ) Data/SG/Vector/Basic.hs:50:1: warning: [-Wunused-imports] The import of ‘Data.Foldable’ is redundant except perhaps to import instances from ‘Data.Foldable’ To import instances alone, use: import Data.Foldable() [3 of 8] Compiling Data.SG.Matrix ( Data/SG/Matrix.hs, dist/build/Data/SG/Matrix.o ) [4 of 8] Compiling Data.SG.Geometry ( Data/SG/Geometry.hs, dist/build/Data/SG/Geometry.o ) Data/SG/Geometry.hs:64:13: error: • Could not deduce (Show a) arising from a use of ‘+’ from the context: Num a bound by the type signature for: plusDir :: Num a => Pair a -> Pair a -> Pair a at Data/SG/Geometry.hs:64:3-9 Possible fix: add (Show a) to the context of the type signature for: plusDir :: Num a => Pair a -> Pair a -> Pair a • In the expression: (+) In an equation for ‘plusDir’: plusDir = (+) In the instance declaration for ‘Geometry Pair Pair LinePair’ Data/SG/Geometry.hs:65:12: error: • Could not deduce (Show a) arising from a use of ‘-’ from the context: Num a bound by the type signature for: fromPt :: Num a => Pair a -> Pair a -> Pair a at Data/SG/Geometry.hs:65:3-8 Possible fix: add (Show a) to the context of the type signature for: fromPt :: Num a => Pair a -> Pair a -> Pair a • In the expression: (-) In an equation for ‘fromPt’: fromPt = (-) In the instance declaration for ‘Geometry Pair Pair LinePair’ Data/SG/Geometry.hs:70:13: error: • Could not deduce (Show a) arising from a use of ‘+’ from the context: Num a bound by the type signature for: plusDir :: Num a => Triple a -> Triple a -> Triple a at Data/SG/Geometry.hs:70:3-9 Possible fix: add (Show a) to the context of the type signature for: plusDir :: Num a => Triple a -> Triple a -> Triple a • In the expression: (+) In an equation for ‘plusDir’: plusDir = (+) In the instance declaration for ‘Geometry Triple Triple LineTriple’ Data/SG/Geometry.hs:71:12: error: • Could not deduce (Show a) arising from a use of ‘-’ from the context: Num a bound by the type signature for: fromPt :: Num a => Triple a -> Triple a -> Triple a at Data/SG/Geometry.hs:71:3-8 Possible fix: add (Show a) to the context of the type signature for: fromPt :: Num a => Triple a -> Triple a -> Triple a • In the expression: (-) In an equation for ‘fromPt’: fromPt = (-) In the instance declaration for ‘Geometry Triple Triple LineTriple’ Data/SG/Geometry.hs:164:5: error: • Could not deduce (Eq a) arising from a use of ‘==’ from the context: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) bound by the type signature for: valueAtX :: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) => ln a -> a -> Maybe a at Data/SG/Geometry.hs:(161,1)-(162,25) Possible fix: add (Eq a) to the context of the type signature for: valueAtX :: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) => ln a -> a -> Maybe a • In the expression: xd == 0 In a stmt of a pattern guard for an equation for ‘valueAtX’: xd == 0 In an equation for ‘valueAtX’: valueAtX l tgt | xd == 0 = Nothing | otherwise = let t = (tgt - x) / xd in Just t where x = getX $ getLineStart l xd = getX $ getLineDir l Data/SG/Geometry.hs:177:5: error: • Could not deduce (Eq a) arising from a use of ‘==’ from the context: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) bound by the type signature for: valueAtY :: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) => ln a -> a -> Maybe a at Data/SG/Geometry.hs:(174,1)-(175,25) Possible fix: add (Eq a) to the context of the type signature for: valueAtY :: (Geometry rel pt ln, Coord2 rel, Coord2 pt, Fractional a) => ln a -> a -> Maybe a • In the expression: yd == 0 In a stmt of a pattern guard for an equation for ‘valueAtY’: yd == 0 In an equation for ‘valueAtY’: valueAtY l tgt | yd == 0 = Nothing | otherwise = let t = (tgt - y) / yd in Just t where y = getY $ getLineStart l yd = getY $ getLineDir l Data/SG/Geometry.hs:190:5: error: • Could not deduce (Eq a) arising from a use of ‘==’ from the context: (Geometry rel pt ln, Coord3 rel, Coord3 pt, Fractional a) bound by the type signature for: valueAtZ :: (Geometry rel pt ln, Coord3 rel, Coord3 pt, Fractional a) => ln a -> a -> Maybe a at Data/SG/Geometry.hs:(187,1)-(188,25) Possible fix: add (Eq a) to the context of the type signature for: valueAtZ :: (Geometry rel pt ln, Coord3 rel, Coord3 pt, Fractional a) => ln a -> a -> Maybe a • In the expression: zd == 0 In a stmt of a pattern guard for an equation for ‘valueAtZ’: zd == 0 In an equation for ‘valueAtZ’: valueAtZ l tgt | zd == 0 = Nothing | otherwise = let t = (tgt - z) / zd in Just t where z = getZ $ getLineStart l zd = getZ $ getLineDir l cabal: Leaving directory '/tmp/cabal-tmp-10255/SG-1.0' Building logict-0.6.0.2... Installed logict-0.6.0.2 Configuring tf-random-0.5... Building tf-random-0.5... Installed tf-random-0.5 Configuring QuickCheck-2.9.2... Building QuickCheck-2.9.2... Installed text-1.2.2.1 Configuring xml-1.3.14... Building xml-1.3.14... Configuring parsec-3.1.11... Installed xml-1.3.14 Building parsec-3.1.11... Configuring html-minimalist-0.12... Installed parsec-3.1.11 Building html-minimalist-0.12... Installed html-minimalist-0.12 Installed QuickCheck-2.9.2 Configuring permutation-0.5.0.5... Building permutation-0.5.0.5... Installed permutation-0.5.0.5 cabal: Error: some packages failed to install: SG-1.0 failed during the building phase. The exception was: ExitFailure 1 hcg-minus-0.12 depends on SG-1.0 which failed to install. hly-0.12 depends on SG-1.0 which failed to install. hmt-0.12 depends on SG-1.0 which failed to install.