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
Configuring syb-0.6...
Building syb-0.6...
Configuring text-1.2.2.1...
Installed syb-0.6
Building text-1.2.2.1...
Configuring utf8-string-1.0.1.1...
Installed network-2.6.3.1
Building utf8-string-1.0.1.1...
Installed utf8-string-1.0.1.1
Installed text-1.2.2.1
Configuring parsec-3.1.11...
Building parsec-3.1.11...
Installed parsec-3.1.11
Configuring network-uri-2.6.1.0...
Configuring json-0.9.1...
Building network-uri-2.6.1.0...
Building json-0.9.1...
Installed network-uri-2.6.1.0
Configuring HTTP-4000.3.4...
Building HTTP-4000.3.4...
Installed json-0.9.1
Installed HTTP-4000.3.4
Configuring ffeed-0.2...
Building ffeed-0.2...
Failed to install ffeed-0.2
Build log ( /home/builder/.cabal/logs/ffeed-0.2.log ):
cabal: Entering directory '/tmp/cabal-tmp-5036/ffeed-0.2'
Warning: ffeed.cabal: Unknown fields: build-depends (line 14)
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 ffeed-0.2...
Building ffeed-0.2...
Preprocessing library ffeed-0.2...
[ 1 of 14] Compiling Util.Fetch       ( Util/Fetch.hs, dist/build/Util/Fetch.o )

Util/Fetch.hs:26:1: error:
    Failed to load interface for ‘Network.URI’
    It is a member of the hidden package ‘network-uri-2.6.1.0’.
    Perhaps you need to add ‘network-uri’ to the build-depends in your .cabal file.
    Use -v to see a list of the files searched for.
cabal: Leaving directory '/tmp/cabal-tmp-5036/ffeed-0.2'
cabal: Error: some packages failed to install:
ffeed-0.2 failed during the building phase. The exception was:
ExitFailure 1