gistfile1.txt

 * Package:    dev-haskell/transformers-compat-0.3.3.4
 * Repository: gentoo-haskell
 * Maintainer: haskell@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking transformers-compat-0.3.3.4.tar.gz to /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work
>>> Source unpacked in /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work
>>> Preparing source in /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4 ...
 * Using cabal-1.18.1.2.
 * Prepending /usr/lib64/ghc-7.6.3 to LD_LIBRARY_PATH
/usr/bin/ghc -package Cabal-1.18.1.2 --make /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4/Setup.lhs -dynamic -o setup
[1 of 1] Compiling Main             ( /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4/Setup.lhs, /var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4/Setup.o )
Linking setup ...
./setup configure --ghc --prefix=/usr --with-compiler=/usr/bin/ghc --with-hc-pkg=/usr/bin/ghc-pkg --prefix=/usr --libdir=/usr/lib64 --libsubdir=transformers-compat-0.3.3.4/ghc-7.6.3 --datadir=/usr/share/ --datasubdir=transformers-compat-0.3.3.4/ghc-7.6.3 --ghc-option=-optl-Wl,-O1 --ghc-option=-optl-Wl,--as-needed --disable-executable-stripping --docdir=/usr/share/doc/transformers-compat-0.3.3.4 --verbose --sysconfdir=/etc
Configuring transformers-compat-0.3.3.4...
setup: At least the following dependencies are missing:
transformers >=0.4.1 && <0.5
 * ghc-pkg check: 'checking for other broken packages:'
 * ERROR: dev-haskell/transformers-compat-0.3.3.4::gentoo-haskell failed (configure phase):
 *   setup configure failed
 * 
 * Call stack:
 *     ebuild.sh, line   93:  Called src_configure
 *   environment, line 2757:  Called haskell-cabal_src_configure
 *   environment, line 1884:  Called cabal-configure
 *   environment, line  510:  Called cabal-show-brokens-and-die 'setup configure failed'
 *   environment, line  606:  Called die
 * The specific snippet of code:
 *       die "$@"
 * 
 * If you need support, post the output of `emerge --info '=dev-haskell/transformers-compat-0.3.3.4::gentoo-haskell'`,
 * the complete build log and the output of `emerge -pqv '=dev-haskell/transformers-compat-0.3.3.4::gentoo-haskell'`.
 * The complete build log is located at '/var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/temp/environment'.
 * Working directory: '/var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4'
 * S: '/var/tmp/portage/dev-haskell/transformers-compat-0.3.3.4/work/transformers-compat-0.3.3.4'

what transformers you have installed?