these derivations will be built:
  /nix/store/lmz5063wzpl0p8p5hpp6nz48yp6adfly-datetime-0.3.1.drv
  /nix/store/p2l2pi8kg3dhnwqp9lqfd6365lwf64bf-ghc-8.6.5-with-packages.drv
building '/nix/store/lmz5063wzpl0p8p5hpp6nz48yp6adfly-datetime-0.3.1.drv'...
setupCompilerEnvironmentPhase
Build with /nix/store/9wvsbqr57k9n6d8vv6b10d04j51f9ims-ghc-8.6.5.
unpacking sources
unpacking source archive /nix/store/bg69hdkm9vxcjsyszrnbz00kfxhw0fr8-datetime-0.3.1.tar.gz
source root is datetime-0.3.1
setting SOURCE_DATE_EPOCH to timestamp 1437431091 of file datetime-0.3.1/datetime.cabal
patching sources
compileBuildDriverPhase
setupCompileFlags: -package-db=/build/setup-package.conf.d -j4 -threaded
[1 of 1] Compiling Main             ( Setup.lhs, /build/Main.o )
Linking Setup ...
configuring
configureFlags: --verbose --prefix=/nix/store/h2m8v2c4gdcg2wgb97zfi1v3h2pwnqwb-datetime-0.3.1 --libdir=$prefix/lib/$compiler --libsubdir=$abi/$libname --docdir=/nix/store/apagwfckrcp6r8m6cjf8ny5aybsc6n9g-datetime-0.3.1-doc/share/doc/datetime-0.3.1 --with-gcc=gcc --package-db=/build/package.conf.d --ghc-option=-j4 --disable-split-objs --enable-library-profiling --profiling-detail=exported-functions --disable-profiling --enable-shared --disable-coverage --enable-static --disable-executable-dynamic --enable-tests --disable-benchmarks --enable-library-vanilla --disable-library-for-ghci --ghc-option=-split-sections --extra-lib-dirs=/nix/store/xhhkr936b9q5sz88jp4l29wljbbcg39k-ncurses-6.1-20190112/lib --extra-lib-dirs=/nix/store/j2fdy70n25zaws892dc95yhj0gfhdxg6-libffi-3.3/lib --extra-lib-dirs=/nix/store/447im4mh8gmw85dkrvz3facg1jsbn6c7-gmp-6.2.0/lib
Using Parsec parser
Configuring datetime-0.3.1...
CallStack (from HasCallStack):
  die', called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:950:20 in Cabal-2.4.0.1:Distribution.Simple.Configure
  configureFinalizedPackage, called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:460:12 in Cabal-2.4.0.1:Distribution.Simple.Configure
  configure, called at libraries/Cabal/Cabal/Distribution/Simple.hs:596:20 in Cabal-2.4.0.1:Distribution.Simple
  confHook, called at libraries/Cabal/Cabal/Distribution/Simple/UserHooks.hs:67:5 in Cabal-2.4.0.1:Distribution.Simple.UserHooks
  configureAction, called at libraries/Cabal/Cabal/Distribution/Simple.hs:178:19 in Cabal-2.4.0.1:Distribution.Simple
  defaultMainHelper, called at libraries/Cabal/Cabal/Distribution/Simple.hs:115:27 in Cabal-2.4.0.1:Distribution.Simple
  defaultMain, called at Setup.lhs:3:10 in main:Main
Setup: Encountered missing dependencies:
base >=4.2 && <4.9

builder for '/nix/store/lmz5063wzpl0p8p5hpp6nz48yp6adfly-datetime-0.3.1.drv' failed with exit code 1
cannot build derivation '/nix/store/p2l2pi8kg3dhnwqp9lqfd6365lwf64bf-ghc-8.6.5-with-packages.drv': 1 dependencies couldn't be built
error: build of '/nix/store/p2l2pi8kg3dhnwqp9lqfd6365lwf64bf-ghc-8.6.5-with-packages.drv' failed