Resolving dependencies... Configuring network-2.6.3.1... Configuring mtl-2.2.1... Building mtl-2.2.1... Building network-2.6.3.1... Configuring old-locale-1.0.0.7... Installed mtl-2.2.1 Building old-locale-1.0.0.7... Installed old-locale-1.0.0.7 Configuring old-time-1.1.0.3... Building old-time-1.1.0.3... Installed network-2.6.3.1 Installed old-time-1.1.0.3 Configuring urlcheck-0.1.1... Building urlcheck-0.1.1... Failed to install urlcheck-0.1.1 Build log ( /home/builder/.cabal/logs/urlcheck-0.1.1.log ): cabal: Entering directory '/tmp/cabal-tmp-1993/urlcheck-0.1.1' Warning: urlcheck.cabal: Unknown fields: build-depends (line 8) Fields allowed in this section: name, version, cabal-version, build-type, license, license-file, license-files, copyright, maintainer, stability, homepage, package-url, bug-reports, synopsis, description, category, author, tested-with, data-files, data-dir, extra-source-files, extra-tmp-files, extra-doc-files Configuring urlcheck-0.1.1... Building urlcheck-0.1.1... Preprocessing executable 'urlcheck' for urlcheck-0.1.1... [1 of 2] Compiling TinyHTTP ( TinyHTTP.hs, dist/build/urlcheck/urlcheck-tmp/TinyHTTP.o ) TinyHTTP.hs:21:1: error: Failed to load interface for ‘Network.URI’ Perhaps you meant Network.BSD (from network-2.6.3.1) Use -v to see a list of the files searched for. cabal: Leaving directory '/tmp/cabal-tmp-1993/urlcheck-0.1.1' cabal: Error: some packages failed to install: urlcheck-0.1.1 failed during the building phase. The exception was: ExitFailure 1