1

warning: Nix search path entry '/home/demo/.nix-defexpr/channels' does not exist, ignoring
these derivations will be built:
  /nix/store/d6ji516i7pry5l6gv18y6hpj9k1bvgg5-heist-1.0.1.0.drv
  /nix/store/zj1clks7mzq8gn91ahhwa3nvpi5rwra9-snap-1.0.0.2.drv
  /nix/store/ifygvvhjcg46mrv7sgsw3nl3p54kr2c3-hoogle-local-0.1.drv
  /nix/store/fd2g848zlh59lyypvy3kbcz4pkgp6j42-ghc-8.0.2-with-packages.drv
building '/nix/store/d6ji516i7pry5l6gv18y6hpj9k1bvgg5-heist-1.0.1.0.drv'...
setupCompilerEnvironmentPhase
Build with /nix/store/snpnx6gdggvjpdig04n4q7x2yd1bgjbb-ghc-8.0.2.
unpacking sources
unpacking source archive /nix/store/8wwcjygz0ijxszjrngzwfp23yccb3s25-heist-1.0.1.0.tar.gz
source root is heist-1.0.1.0
/nix/store/j1ly0zzpnzb8y8ry6k4vi4prk8vwq233-set-source-date-epoch-to-latest.sh: line 7: warning: command substitution: ignored null byte in input
setting SOURCE_DATE_EPOCH to timestamp 1477644095 of file heist-1.0.1.0/TODO
patching sources
Replace Cabal file with edited version from http://hackage.haskell.org/package/heist-1.0.1.0/revision/6.cabal.
compileBuildDriverPhase
setupCompileFlags: -package-db=/tmp/nix-build-heist-1.0.1.0.drv-0/package.conf.d -j1 -threaded
[1 of 1] Compiling Main             ( Setup.hs, /tmp/nix-build-heist-1.0.1.0.drv-0/Main.o )
Linking Setup ...
configuring
configureFlags: --verbose --prefix=/nix/store/7drqwffg1zzwqrb289xk2wiwqaksl7i1-heist-1.0.1.0 --libdir=$prefix/lib/$compiler --libsubdir=$pkgid --docdir=/nix/store/abm9xfhki18348j7yab2na2b36dxrx4s-heist-1.0.1.0-doc/share/doc --with-gcc=gcc --package-db=/tmp/nix-build-heist-1.0.1.0.drv-0/package.conf.d --ghc-option=-optl=-Wl,-rpath=/nix/store/7drqwffg1zzwqrb289xk2wiwqaksl7i1-heist-1.0.1.0/lib/ghc-8.0.2/heist-1.0.1.0 --ghc-option=-j1 --disable-split-objs --disable-library-profiling --disable-profiling --enable-shared --disable-coverage --enable-library-vanilla --enable-executable-dynamic --enable-tests --ghc-option=-split-sections --ghc-options=-fexpose-all-unfoldings --extra-lib-dirs=/nix/store/sldddw66nndddmjf6knlla50ls5dkkxf-ncurses-6.0-20170902/lib --extra-lib-dirs=/nix/store/h9g62cvpviyhfp3v5k6qwb7k2pafg23a-gmp-6.1.2/lib
Configuring heist-1.0.1.0...
Setup: Encountered missing dependencies:
aeson >=0.6 && <1.2
builder for '/nix/store/d6ji516i7pry5l6gv18y6hpj9k1bvgg5-heist-1.0.1.0.drv' failed with exit code 1
cannot build derivation '/nix/store/fd2g848zlh59lyypvy3kbcz4pkgp6j42-ghc-8.0.2-with-packages.drv': 1 dependencies couldn't be built
error: build of '/nix/store/fd2g848zlh59lyypvy3kbcz4pkgp6j42-ghc-8.0.2-with-packages.drv' failed