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Configuring servant-auth-hmac-0.1.0.1...
Building servant-auth-hmac-0.1.0.1...
Failed to install servant-auth-hmac-0.1.0.1
Build log ( /home/builder/.cabal/logs/servant-auth-hmac-0.1.0.1.log ):
cabal: Entering directory '/tmp/cabal-tmp-28264/servant-auth-hmac-0.1.0.1'
Configuring servant-auth-hmac-0.1.0.1...
Building servant-auth-hmac-0.1.0.1...
Preprocessing library servant-auth-hmac-0.1.0.1...
[1 of 1] Compiling Servant.Server.Experimental.Auth.HMAC ( src/Servant/Server/Experimental/Auth/HMAC.hs, dist/build/Servant/Server/Experimental/Auth/HMAC.o )
Preprocessing executable 'example' for servant-auth-hmac-0.1.0.1...
[1 of 1] Compiling Main             ( example/server/Example.hs, dist/build/example/example-tmp/Main.o )

example/server/Example.hs:9:1: error:
    Failed to load interface for ‘AuthAPI’
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-28264/servant-auth-hmac-0.1.0.1'
cabal: Error: some packages failed to install:
servant-auth-hmac-0.1.0.1 failed during the building phase. The exception was:
ExitFailure 1