Resolving dependencies... Configuring mtl-2.2.1... Configuring network-2.6.3.1... Building mtl-2.2.1... Building network-2.6.3.1... Installed mtl-2.2.1 Downloading fst-0.10.0.1... Configuring old-locale-1.0.0.7... Building old-locale-1.0.0.7... Configuring parallel-3.2.1.0... Installed old-locale-1.0.0.7 Building parallel-3.2.1.0... Configuring random-1.1... Installed parallel-3.2.1.0 Building random-1.1... Configuring stm-2.4.4.1... Installed network-2.6.3.1 Building stm-2.4.4.1... Configuring syb-0.6... Installed random-1.1 Building syb-0.6... Configuring text-1.2.2.1... Installed stm-2.4.4.1 Building text-1.2.2.1... Configuring utf8-string-1.0.1.1... Installed syb-0.6 Building utf8-string-1.0.1.1... Configuring transformers-compat-0.5.1.4... Installed utf8-string-1.0.1.1 Building transformers-compat-0.5.1.4... Installed transformers-compat-0.5.1.4 Configuring fst-0.10.0.1... Building fst-0.10.0.1... Configuring old-time-1.1.0.3... Installed text-1.2.2.1 Building old-time-1.1.0.3... Configuring exceptions-0.8.3... Installed old-time-1.1.0.3 Building exceptions-0.8.3... Configuring parsec-3.1.11... Installed fst-0.10.0.1 Building parsec-3.1.11... Installed exceptions-0.8.3 Installed parsec-3.1.11 Configuring multipart-0.1.2... Configuring network-uri-2.6.1.0... Building multipart-0.1.2... Building network-uri-2.6.1.0... Configuring json-0.9.1... Installed multipart-0.1.2 Building json-0.9.1... Installed network-uri-2.6.1.0 Configuring httpd-shed-0.4.0.3... Building httpd-shed-0.4.0.3... Configuring cgi-3001.3.0.2... Installed httpd-shed-0.4.0.3 Building cgi-3001.3.0.2... Installed json-0.9.1 Installed cgi-3001.3.0.2 Downloading gf-3.4... Configuring gf-3.4... Failed to install gf-3.4 Build log ( /home/builder/.cabal/logs/gf-3.4.log ): cabal: Entering directory '/tmp/cabal-tmp-6565/gf-3.4' cabal: Leaving directory '/tmp/cabal-tmp-6565/gf-3.4' cabal: Error: some packages failed to install: gf-3.4 failed during the configure step. The exception was: user error ('/opt/ghc/8.0.2/bin/ghc' exited with an error: /tmp/cabal-tmp-6565/gf-3.4/WebSetup.hs:5:1: warning: [-Wdeprecations] Module ‘System.Cmd’ is deprecated: Use "System.Process" instead /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:120:10: error: Ambiguous occurrence ‘die’ It could refer to either ‘Distribution.Simple.Utils.die’, imported from ‘Distribution.Simple.Utils’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:5:1-32 or ‘System.Exit.die’, imported from ‘System.Exit’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:17:1-18 /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:383:30: error: Ambiguous occurrence ‘die’ It could refer to either ‘Distribution.Simple.Utils.die’, imported from ‘Distribution.Simple.Utils’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:5:1-32 or ‘System.Exit.die’, imported from ‘System.Exit’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:17:1-18 /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:390:71: error: Ambiguous occurrence ‘exeExtension’ It could refer to either ‘Distribution.Simple.BuildPaths.exeExtension’, imported from ‘Distribution.Simple.BuildPaths’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:4:1-37 or ‘System.Directory.exeExtension’, imported from ‘System.Directory’ at /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:15:1-23 (and originally defined in ‘directory-1.2.6.2:System.Directory.Internal.Config’) /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:394:14: error: Not in scope: ‘E.try’ Module ‘System.IO.Error’ does not export ‘try’. /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:413:20: error: Not in scope: ‘E.try’ Module ‘System.IO.Error’ does not export ‘try’. /tmp/cabal-tmp-6565/gf-3.4/dist/setup/setup.hs:422:13: error: Not in scope: ‘E.try’ Module ‘System.IO.Error’ does not export ‘try’. )