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...
Configuring random-1.1...
Installed mtl-2.2.1
Building network-2.6.3.1...
Building random-1.1...
Configuring text-1.2.2.1...
Installed random-1.1
Building text-1.2.2.1...
Installed network-2.6.3.1
Installed text-1.2.2.1
Configuring polyparse-1.12...
Configuring parsec-3.1.11...
Building polyparse-1.12...
Building parsec-3.1.11...
Installed parsec-3.1.11
Installed polyparse-1.12
Configuring HaXml-1.25.3...
Building HaXml-1.25.3...
Installed HaXml-1.25.3
Configuring dbus-core-0.5...
Building dbus-core-0.5...
Failed to install dbus-core-0.5
Build log ( /home/builder/.cabal/logs/dbus-core-0.5.log ):
cabal: Entering directory '/tmp/cabal-tmp-15067/dbus-core-0.5'
Configuring dbus-core-0.5...
Building dbus-core-0.5...
Preprocessing library dbus-core-0.5...
[ 1 of 10] Compiling DBus.Util        ( hs/DBus/Util.hs, dist/build/DBus/Util.o )
[ 2 of 10] Compiling DBus.Types       ( hs/DBus/Types.hs, dist/build/DBus/Types.o )

hs/DBus/Types.hs:215:10: 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-15067/dbus-core-0.5'
cabal: Error: some packages failed to install:
dbus-client-0.1 depends on dbus-core-0.5 which failed to install.
dbus-core-0.5 failed during the building phase. The exception was:
ExitFailure 1
fdo-notify-0.1 depends on dbus-core-0.5 which failed to install.