Resolving dependencies... Configuring mtl-2.2.1... Configuring network-2.6.3.1... Building mtl-2.2.1... Building network-2.6.3.1... Configuring syb-0.6... Installed mtl-2.2.1 Building syb-0.6... Configuring text-1.2.2.1... Installed syb-0.6 Building text-1.2.2.1... Installed network-2.6.3.1 Installed text-1.2.2.1 Configuring parsec-3.1.11... Building parsec-3.1.11... Installed parsec-3.1.11 Configuring json-0.9.1... Configuring network-uri-2.6.1.0... Building json-0.9.1... Building network-uri-2.6.1.0... Installed network-uri-2.6.1.0 Configuring HTTP-4000.3.3... Building HTTP-4000.3.3... Installed json-0.9.1 Installed HTTP-4000.3.3 Configuring hs-twitterarchiver-0.2... Building hs-twitterarchiver-0.2... Failed to install hs-twitterarchiver-0.2 Build log ( /home/builder/.cabal/logs/hs-twitterarchiver-0.2.log ): cabal: Entering directory '/tmp/cabal-tmp-28458/hs-twitterarchiver-0.2' Configuring hs-twitterarchiver-0.2... Building hs-twitterarchiver-0.2... Preprocessing executable 'hs-twitterarchiver' for hs-twitterarchiver-0.2... [1 of 1] Compiling Main ( hs-twitterarchiver.hs, dist/build/hs-twitterarchiver/hs-twitterarchiver-tmp/Main.o ) hs-twitterarchiver.hs:19:25: error: Module ‘System.IO.Error’ does not export ‘try’ cabal: Leaving directory '/tmp/cabal-tmp-28458/hs-twitterarchiver-0.2' cabal: Error: some packages failed to install: hs-twitterarchiver-0.2 failed during the building phase. The exception was: ExitFailure 1