Resolving dependencies...
Configuring hledger-web-0.17.1...
Building hledger-web-0.17.1...
Failed to install hledger-web-0.17.1
Build log ( /home/builder/.cabal/logs/hledger-web-0.17.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-1866/hledger-web-0.17.1'
Configuring hledger-web-0.17.1...
Building hledger-web-0.17.1...
Preprocessing library hledger-web-0.17.1...
[1 of 7] Compiling Hledger.Web.Settings ( Hledger/Web/Settings.hs, dist/build/Hledger/Web/Settings.o )

Hledger/Web/Settings.hs:124:25: error: parse error on input ‘{’
cabal: Leaving directory '/tmp/cabal-tmp-1866/hledger-web-0.17.1'
cabal: Error: some packages failed to install:
hledger-web-0.17.1 failed during the building phase. The exception was:
ExitFailure 1