Resolving dependencies...
Configuring mtl-2.2.1...
Configuring old-locale-1.0.0.7...
Building mtl-2.2.1...
Building old-locale-1.0.0.7...
Installed old-locale-1.0.0.7
Configuring text-1.2.2.1...
Building text-1.2.2.1...
Configuring old-time-1.1.0.3...
Installed mtl-2.2.1
Building old-time-1.1.0.3...
Installed old-time-1.1.0.3
Installed text-1.2.2.1
Configuring polyparse-1.12...
Building polyparse-1.12...
Installed polyparse-1.12
Configuring cpphs-1.20.2...
Building cpphs-1.20.2...
Installed cpphs-1.20.2
Configuring haskell-src-exts-1.19.1...
Building haskell-src-exts-1.19.1...
Installed haskell-src-exts-1.19.1
Configuring hsx-0.4.4...
Building hsx-0.4.4...
Failed to install hsx-0.4.4
Build log ( /home/builder/.cabal/logs/hsx-0.4.4.log ):
cabal: Entering directory '/tmp/cabal-tmp-5366/hsx-0.4.4'
Configuring hsx-0.4.4...
Building hsx-0.4.4...
Preprocessing library hsx-0.4.4...

on the commandline: warning:
    -XOverlappingInstances is deprecated: instead use per-instance pragmas OVERLAPPING/OVERLAPPABLE/OVERLAPS
[1 of 2] Compiling HSX.XMLGenerator ( src/HSX/XMLGenerator.hs, dist/build/HSX/XMLGenerator.o )

src/HSX/XMLGenerator.hs:71:22: error:
    • Illegal type synonym family application in instance: XML m
    • In the instance declaration for ‘EmbedAsChild m (XML m)’
cabal: Leaving directory '/tmp/cabal-tmp-5366/hsx-0.4.4'
cabal: Error: some packages failed to install:
hsx-0.4.4 failed during the building phase. The exception was:
ExitFailure 1