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Building yaml-0.8.21.1...
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Configuring keter-1.4.2.1...
Building keter-1.4.2.1...
Failed to install keter-1.4.2.1
Build log ( /home/builder/.cabal/logs/keter-1.4.2.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-14908/keter-1.4.2.1'
Configuring keter-1.4.2.1...
Building keter-1.4.2.1...
Preprocessing library keter-1.4.2.1...
[ 1 of 18] Compiling Network.HTTP.ReverseProxy.Rewrite ( Network/HTTP/ReverseProxy/Rewrite.hs, dist/build/Network/HTTP/ReverseProxy/Rewrite.o )

Network/HTTP/ReverseProxy/Rewrite.hs:131:9: error:
    Not in scope: ‘checkStatus’
cabal: Leaving directory '/tmp/cabal-tmp-14908/keter-1.4.2.1'
cabal: Error: some packages failed to install:
keter-1.4.2.1 failed during the building phase. The exception was:
ExitFailure 1