Resolving dependencies...
Configuring data-binary-ieee754-0.4.4...
Configuring mtl-2.2.1...
Building data-binary-ieee754-0.4.4...
Building mtl-2.2.1...
Installed data-binary-ieee754-0.4.4
Configuring network-2.6.3.1...
Building network-2.6.3.1...
Configuring utf8-string-1.0.1.1...
Installed mtl-2.2.1
Building utf8-string-1.0.1.1...
Configuring text-1.2.2.1...
Installed utf8-string-1.0.1.1
Building text-1.2.2.1...
Installed network-2.6.3.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring dbus-core-0.2...
Building dbus-core-0.2...
Failed to install dbus-core-0.2
Build log ( /home/builder/.cabal/logs/dbus-core-0.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-5471/dbus-core-0.2'
Configuring dbus-core-0.2...
Building dbus-core-0.2...
Preprocessing library dbus-core-0.2...
[ 1 of 18] Compiling DBus.Types.Util  ( DBus/Types/Util.lhs, dist/build/DBus/Types/Util.o )

DBus/Types/Util.lhs:23:1: warning: [-Wtabs]
    Tab character found here, and in two further locations.
    Please use spaces instead.
[ 2 of 18] Compiling DBus.Types.Signature ( DBus/Types/Signature.lhs, dist/build/DBus/Types/Signature.o )

DBus/Types/Signature.lhs:20:1: warning: [-Wtabs]
    Tab character found here, and in 98 further locations.
    Please use spaces instead.
[ 3 of 18] Compiling DBus.Types.ObjectPath ( DBus/Types/ObjectPath.lhs, dist/build/DBus/Types/ObjectPath.o )

DBus/Types/ObjectPath.lhs:20:1: warning: [-Wtabs]
    Tab character found here, and in 7 further locations.
    Please use spaces instead.
[ 4 of 18] Compiling DBus.Types.Containers[boot] ( DBus/Types/Containers.lhs-boot, dist/build/DBus/Types/Containers.o-boot )

DBus/Types/Containers.lhs-boot:46:10: error:
    • Illegal instance declaration for ‘Variable String’
        (All instance types must be of the form (T a1 ... an)
         where a1 ... an are *distinct type variables*,
         and each type variable appears at most once in the instance head.
         Use FlexibleInstances if you want to disable this.)
    • In the instance declaration for ‘Variable String’
cabal: Leaving directory '/tmp/cabal-tmp-5471/dbus-core-0.2'
cabal: Error: some packages failed to install:
dbus-core-0.2 failed during the building phase. The exception was:
ExitFailure 1