$ nix-shell
these derivations will be built:
  /nix/store/xdj4vprr0valjrg1k7ldd7f31p38b47q-python3.6-Keras-2.2.0.drv
  /nix/store/yqklvfrf0k6r57mr7ihjsqw5dknhkbgm-python3-3.6.6-env.drv
building '/nix/store/xdj4vprr0valjrg1k7ldd7f31p38b47q-python3.6-Keras-2.2.0.drv'...
unpacking sources
unpacking source archive /nix/store/p9ybilmm6achrmdhbk260qdp76svjgdx-Keras-2.2.0.tar.gz
source root is Keras-2.2.0
setting SOURCE_DATE_EPOCH to timestamp 1528327085 of file Keras-2.2.0/setup.cfg
patching sources
configuring
building
running bdist_wheel
running build
running build_py
creating build
creating build/lib
creating build/lib/docs
copying docs/autogen.py -> build/lib/docs
copying docs/__init__.py -> build/lib/docs
creating build/lib/keras
copying keras/initializers.py -> build/lib/keras
copying keras/objectives.py -> build/lib/keras
copying keras/__init__.py -> build/lib/keras
copying keras/losses.py -> build/lib/keras
copying keras/constraints.py -> build/lib/keras
copying keras/callbacks.py -> build/lib/keras
copying keras/optimizers.py -> build/lib/keras
copying keras/activations.py -> build/lib/keras
copying keras/models.py -> build/lib/keras
copying keras/regularizers.py -> build/lib/keras
copying keras/metrics.py -> build/lib/keras
creating build/lib/keras/datasets
copying keras/datasets/mnist.py -> build/lib/keras/datasets
copying keras/datasets/__init__.py -> build/lib/keras/datasets
copying keras/datasets/imdb.py -> build/lib/keras/datasets
copying keras/datasets/cifar10.py -> build/lib/keras/datasets
copying keras/datasets/reuters.py -> build/lib/keras/datasets
copying keras/datasets/fashion_mnist.py -> build/lib/keras/datasets
copying keras/datasets/boston_housing.py -> build/lib/keras/datasets
copying keras/datasets/cifar100.py -> build/lib/keras/datasets
copying keras/datasets/cifar.py -> build/lib/keras/datasets
creating build/lib/keras/engine
copying keras/engine/training_utils.py -> build/lib/keras/engine
copying keras/engine/network.py -> build/lib/keras/engine
copying keras/engine/training.py -> build/lib/keras/engine
copying keras/engine/training_generator.py -> build/lib/keras/engine
copying keras/engine/input_layer.py -> build/lib/keras/engine
copying keras/engine/training_arrays.py -> build/lib/keras/engine
copying keras/engine/base_layer.py -> build/lib/keras/engine
copying keras/engine/topology.py -> build/lib/keras/engine
copying keras/engine/saving.py -> build/lib/keras/engine
copying keras/engine/sequential.py -> build/lib/keras/engine
copying keras/engine/__init__.py -> build/lib/keras/engine
creating build/lib/keras/wrappers
copying keras/wrappers/scikit_learn.py -> build/lib/keras/wrappers
copying keras/wrappers/__init__.py -> build/lib/keras/wrappers
creating build/lib/keras/layers
copying keras/layers/pooling.py -> build/lib/keras/layers
copying keras/layers/cudnn_recurrent.py -> build/lib/keras/layers
copying keras/layers/convolutional_recurrent.py -> build/lib/keras/layers
copying keras/layers/embeddings.py -> build/lib/keras/layers
copying keras/layers/merge.py -> build/lib/keras/layers
copying keras/layers/normalization.py -> build/lib/keras/layers
copying keras/layers/__init__.py -> build/lib/keras/layers
copying keras/layers/advanced_activations.py -> build/lib/keras/layers
copying keras/layers/recurrent.py -> build/lib/keras/layers
copying keras/layers/core.py -> build/lib/keras/layers
copying keras/layers/convolutional.py -> build/lib/keras/layers
copying keras/layers/local.py -> build/lib/keras/layers
copying keras/layers/wrappers.py -> build/lib/keras/layers
copying keras/layers/noise.py -> build/lib/keras/layers
creating build/lib/keras/utils
copying keras/utils/__init__.py -> build/lib/keras/utils
copying keras/utils/vis_utils.py -> build/lib/keras/utils
copying keras/utils/layer_utils.py -> build/lib/keras/utils
copying keras/utils/test_utils.py -> build/lib/keras/utils
copying keras/utils/conv_utils.py -> build/lib/keras/utils
copying keras/utils/generic_utils.py -> build/lib/keras/utils
copying keras/utils/np_utils.py -> build/lib/keras/utils
copying keras/utils/io_utils.py -> build/lib/keras/utils
copying keras/utils/multi_gpu_utils.py -> build/lib/keras/utils
copying keras/utils/data_utils.py -> build/lib/keras/utils
creating build/lib/keras/preprocessing
copying keras/preprocessing/text.py -> build/lib/keras/preprocessing
copying keras/preprocessing/__init__.py -> build/lib/keras/preprocessing
copying keras/preprocessing/sequence.py -> build/lib/keras/preprocessing
copying keras/preprocessing/image.py -> build/lib/keras/preprocessing
creating build/lib/keras/applications
copying keras/applications/vgg19.py -> build/lib/keras/applications
copying keras/applications/densenet.py -> build/lib/keras/applications
copying keras/applications/inception_resnet_v2.py -> build/lib/keras/applications
copying keras/applications/__init__.py -> build/lib/keras/applications
copying keras/applications/inception_v3.py -> build/lib/keras/applications
copying keras/applications/nasnet.py -> build/lib/keras/applications
copying keras/applications/mobilenetv2.py -> build/lib/keras/applications
copying keras/applications/xception.py -> build/lib/keras/applications
copying keras/applications/resnet50.py -> build/lib/keras/applications
copying keras/applications/vgg16.py -> build/lib/keras/applications
copying keras/applications/imagenet_utils.py -> build/lib/keras/applications
copying keras/applications/mobilenet.py -> build/lib/keras/applications
creating build/lib/keras/legacy
copying keras/legacy/interfaces.py -> build/lib/keras/legacy
copying keras/legacy/__init__.py -> build/lib/keras/legacy
copying keras/legacy/layers.py -> build/lib/keras/legacy
creating build/lib/keras/backend
copying keras/backend/common.py -> build/lib/keras/backend
copying keras/backend/cntk_backend.py -> build/lib/keras/backend
copying keras/backend/__init__.py -> build/lib/keras/backend
copying keras/backend/tensorflow_backend.py -> build/lib/keras/backend
copying keras/backend/theano_backend.py -> build/lib/keras/backend
installing to build/bdist.linux-x86_64/wheel
running install
running install_lib
creating build/bdist.linux-x86_64
creating build/bdist.linux-x86_64/wheel
creating build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/callbacks.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/legacy
copying build/lib/keras/legacy/__init__.py -> build/bdist.linux-x86_64/wheel/keras/legacy
copying build/lib/keras/legacy/layers.py -> build/bdist.linux-x86_64/wheel/keras/legacy
copying build/lib/keras/legacy/interfaces.py -> build/bdist.linux-x86_64/wheel/keras/legacy
copying build/lib/keras/optimizers.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/preprocessing
copying build/lib/keras/preprocessing/text.py -> build/bdist.linux-x86_64/wheel/keras/preprocessing
copying build/lib/keras/preprocessing/sequence.py -> build/bdist.linux-x86_64/wheel/keras/preprocessing
copying build/lib/keras/preprocessing/image.py -> build/bdist.linux-x86_64/wheel/keras/preprocessing
copying build/lib/keras/preprocessing/__init__.py -> build/bdist.linux-x86_64/wheel/keras/preprocessing
copying build/lib/keras/initializers.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/backend
copying build/lib/keras/backend/tensorflow_backend.py -> build/bdist.linux-x86_64/wheel/keras/backend
copying build/lib/keras/backend/__init__.py -> build/bdist.linux-x86_64/wheel/keras/backend
copying build/lib/keras/backend/cntk_backend.py -> build/bdist.linux-x86_64/wheel/keras/backend
copying build/lib/keras/backend/common.py -> build/bdist.linux-x86_64/wheel/keras/backend
copying build/lib/keras/backend/theano_backend.py -> build/bdist.linux-x86_64/wheel/keras/backend
creating build/bdist.linux-x86_64/wheel/keras/wrappers
copying build/lib/keras/wrappers/__init__.py -> build/bdist.linux-x86_64/wheel/keras/wrappers
copying build/lib/keras/wrappers/scikit_learn.py -> build/bdist.linux-x86_64/wheel/keras/wrappers
copying build/lib/keras/metrics.py -> build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/losses.py -> build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/__init__.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/cifar100.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/cifar.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/cifar10.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/__init__.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/imdb.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/fashion_mnist.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/mnist.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/boston_housing.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/datasets/reuters.py -> build/bdist.linux-x86_64/wheel/keras/datasets
copying build/lib/keras/objectives.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/pooling.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/merge.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/cudnn_recurrent.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/advanced_activations.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/__init__.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/convolutional.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/noise.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/normalization.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/embeddings.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/local.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/convolutional_recurrent.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/wrappers.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/recurrent.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/layers/core.py -> build/bdist.linux-x86_64/wheel/keras/layers
copying build/lib/keras/constraints.py -> build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/activations.py -> build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/models.py -> build/bdist.linux-x86_64/wheel/keras
copying build/lib/keras/regularizers.py -> build/bdist.linux-x86_64/wheel/keras
creating build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/__init__.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/training_generator.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/network.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/topology.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/saving.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/base_layer.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/input_layer.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/training_arrays.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/training.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/sequential.py -> build/bdist.linux-x86_64/wheel/keras/engine
copying build/lib/keras/engine/training_utils.py -> build/bdist.linux-x86_64/wheel/keras/engine
creating build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/mobilenetv2.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/mobilenet.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/xception.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/resnet50.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/vgg16.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/nasnet.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/__init__.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/inception_resnet_v2.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/vgg19.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/imagenet_utils.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/inception_v3.py -> build/bdist.linux-x86_64/wheel/keras/applications
copying build/lib/keras/applications/densenet.py -> build/bdist.linux-x86_64/wheel/keras/applications
creating build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/data_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/__init__.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/multi_gpu_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/conv_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/layer_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/np_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/test_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/generic_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/io_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
copying build/lib/keras/utils/vis_utils.py -> build/bdist.linux-x86_64/wheel/keras/utils
creating build/bdist.linux-x86_64/wheel/docs
copying build/lib/docs/autogen.py -> build/bdist.linux-x86_64/wheel/docs
copying build/lib/docs/__init__.py -> build/bdist.linux-x86_64/wheel/docs
running install_egg_info
running egg_info
writing Keras.egg-info/PKG-INFO
writing dependency_links to Keras.egg-info/dependency_links.txt
writing requirements to Keras.egg-info/requires.txt
writing top-level names to Keras.egg-info/top_level.txt
reading manifest file 'Keras.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
writing manifest file 'Keras.egg-info/SOURCES.txt'
Copying Keras.egg-info to build/bdist.linux-x86_64/wheel/Keras-2.2.0-py3.6.egg-info
running install_scripts
creating build/bdist.linux-x86_64/wheel/Keras-2.2.0.dist-info/WHEEL
creating '/tmp/nix-build-python3.6-Keras-2.2.0.drv-0/Keras-2.2.0/dist/Keras-2.2.0-py3-none-any.whl' and adding '.' to it
adding 'docs/__init__.py'
adding 'docs/autogen.py'
adding 'keras/__init__.py'
adding 'keras/activations.py'
adding 'keras/callbacks.py'
adding 'keras/constraints.py'
adding 'keras/initializers.py'
adding 'keras/losses.py'
adding 'keras/metrics.py'
adding 'keras/models.py'
adding 'keras/objectives.py'
adding 'keras/optimizers.py'
adding 'keras/regularizers.py'
adding 'keras/applications/__init__.py'
adding 'keras/applications/densenet.py'
adding 'keras/applications/imagenet_utils.py'
adding 'keras/applications/inception_resnet_v2.py'
adding 'keras/applications/inception_v3.py'
adding 'keras/applications/mobilenet.py'
adding 'keras/applications/mobilenetv2.py'
adding 'keras/applications/nasnet.py'
adding 'keras/applications/resnet50.py'
adding 'keras/applications/vgg16.py'
adding 'keras/applications/vgg19.py'
adding 'keras/applications/xception.py'
adding 'keras/backend/__init__.py'
adding 'keras/backend/cntk_backend.py'
adding 'keras/backend/common.py'
adding 'keras/backend/tensorflow_backend.py'
adding 'keras/backend/theano_backend.py'
adding 'keras/datasets/__init__.py'
adding 'keras/datasets/boston_housing.py'
adding 'keras/datasets/cifar.py'
adding 'keras/datasets/cifar10.py'
adding 'keras/datasets/cifar100.py'
adding 'keras/datasets/fashion_mnist.py'
adding 'keras/datasets/imdb.py'
adding 'keras/datasets/mnist.py'
adding 'keras/datasets/reuters.py'
adding 'keras/engine/__init__.py'
adding 'keras/engine/base_layer.py'
adding 'keras/engine/input_layer.py'
adding 'keras/engine/network.py'
adding 'keras/engine/saving.py'
adding 'keras/engine/sequential.py'
adding 'keras/engine/topology.py'
adding 'keras/engine/training.py'
adding 'keras/engine/training_arrays.py'
adding 'keras/engine/training_generator.py'
adding 'keras/engine/training_utils.py'
adding 'keras/layers/__init__.py'
adding 'keras/layers/advanced_activations.py'
adding 'keras/layers/convolutional.py'
adding 'keras/layers/convolutional_recurrent.py'
adding 'keras/layers/core.py'
adding 'keras/layers/cudnn_recurrent.py'
adding 'keras/layers/embeddings.py'
adding 'keras/layers/local.py'
adding 'keras/layers/merge.py'
adding 'keras/layers/noise.py'
adding 'keras/layers/normalization.py'
adding 'keras/layers/pooling.py'
adding 'keras/layers/recurrent.py'
adding 'keras/layers/wrappers.py'
adding 'keras/legacy/__init__.py'
adding 'keras/legacy/interfaces.py'
adding 'keras/legacy/layers.py'
adding 'keras/preprocessing/__init__.py'
adding 'keras/preprocessing/image.py'
adding 'keras/preprocessing/sequence.py'
adding 'keras/preprocessing/text.py'
adding 'keras/utils/__init__.py'
adding 'keras/utils/conv_utils.py'
adding 'keras/utils/data_utils.py'
adding 'keras/utils/generic_utils.py'
adding 'keras/utils/io_utils.py'
adding 'keras/utils/layer_utils.py'
adding 'keras/utils/multi_gpu_utils.py'
adding 'keras/utils/np_utils.py'
adding 'keras/utils/test_utils.py'
adding 'keras/utils/vis_utils.py'
adding 'keras/wrappers/__init__.py'
adding 'keras/wrappers/scikit_learn.py'
adding 'Keras-2.2.0.dist-info/top_level.txt'
adding 'Keras-2.2.0.dist-info/WHEEL'
adding 'Keras-2.2.0.dist-info/METADATA'
adding 'Keras-2.2.0.dist-info/RECORD'
removing build/bdist.linux-x86_64/wheel
installing
/tmp/nix-build-python3.6-Keras-2.2.0.drv-0/Keras-2.2.0/dist /tmp/nix-build-python3.6-Keras-2.2.0.drv-0/Keras-2.2.0
Processing ./Keras-2.2.0-py3-none-any.whl
Requirement already satisfied: six>=1.9.0 in /nix/store/nmkaim5kp9sgmnpi2xk12fmbvkacbp4w-python3.6-six-1.11.0/lib/python3.6/site-packages (from Keras==2.2.0) (1.11.0)
Requirement already satisfied: pyyaml in /nix/store/1xmgisc61lg6dx92ax344k764lpn9a36-python3.6-PyYAML-3.13/lib/python3.6/site-packages (from Keras==2.2.0) (3.13)
Requirement already satisfied: scipy>=0.14 in /nix/store/lbw2psi7x2nc4z2bwjn0lf395jbn4429-python3.6-scipy-1.1.0/lib/python3.6/site-packages (from Keras==2.2.0) (1.1.0)
Collecting keras-preprocessing==1.0.1 (from Keras==2.2.0)
  Could not find a version that satisfies the requirement keras-preprocessing==1.0.1 (from Keras==2.2.0) (from versions: )
No matching distribution found for keras-preprocessing==1.0.1 (from Keras==2.2.0)
builder for '/nix/store/xdj4vprr0valjrg1k7ldd7f31p38b47q-python3.6-Keras-2.2.0.drv' failed with exit code 1
cannot build derivation '/nix/store/yqklvfrf0k6r57mr7ihjsqw5dknhkbgm-python3-3.6.6-env.drv': 1 dependencies couldn't be built
error: build of '/nix/store/yqklvfrf0k6r57mr7ihjsqw5dknhkbgm-python3-3.6.6-env.drv' failed