HI,

Thanks. Indeed, reticulate can’t find tensorflow.

```
> tensorflow::tf_config()
Installation of TensorFlow not found.
Python environments searched for 'tensorflow' package:
/home/xyz/anaconda3/envs/r-tensorflow/bin/python3.6
/usr/bin/python2.7
/usr/bin/python3.6
/home/xyz/anaconda3/bin/python3.7
You can install TensorFlow using the install_tensorflow() function.
> reticulate::conda_list()
name python
1 anaconda3 /home/xyz/anaconda3/bin/python
2 r-tensorflow /home/xyz/anaconda3/envs/r-tensorflow/bin/python
> reticulate::py_module_available("tensorflow")
[1] FALSE
> reticulate::py_module_available("tensorflow_probability")
[1] FALSE
```

There were unmet dependencies during the installation of tensorflow-probability. I tried both to downgrade numpy and to install tensorflow-probability from anaconda.org, but reticulate keeps ignoring it.

```
> reticulate::conda_install("r-tensorflow", "tensorflow-probability", pip = TRUE)
Collecting tensorflow-probability
Downloading https://files.pythonhosted.org/packages/a1/ca/6f213618b5f7d0bf6139e6ec928d412a5ca14e4776adfd41a59c74a34021/tensorflow_probability-0.5.0-py2.py3-none-any.whl (680kB)
Collecting numpy>=1.13.3 (from tensorflow-probability)
Downloading https://files.pythonhosted.org/packages/f5/bf/4981bcbee43934f0adb8f764a1e70ab0ee5a448f6505bd04a87a2fda2a8b/numpy-1.16.1-cp36-cp36m-manylinux1_x86_64.whl (17.3MB)
Collecting six>=1.10.0 (from tensorflow-probability)
Using cached https://files.pythonhosted.org/packages/73/fb/00a976f728d0d1fecfe898238ce23f502a721c0ac0ecfedb80e0d88c64e9/six-1.12.0-py2.py3-none-any.whl
tensorflow 1.10.0 has requirement numpy<=1.14.5,>=1.13.3, but you'll have numpy 1.16.1 which is incompatible.
tensorflow 1.10.0 has requirement setuptools<=39.1.0, but you'll have setuptools 40.7.3 which is incompatible.
Installing collected packages: numpy, six, tensorflow-probability
Successfully installed numpy-1.16.1 six-1.12.0 tensorflow-probability-0.5.0
```

The `conda list`

shows tensorflow and tensorflow-probability.

```
(r-tensorflow) xyz@pop-os:~$ conda list
# packages in environment at /home/xyz/anaconda3/envs/r-tensorflow:
#
# Name Version Build Channel
absl-py 0.7.0 pypi_0 pypi
asn1crypto 0.24.0 py36_1003 conda-forge
astor 0.7.1 pypi_0 pypi
blas 1.1 openblas conda-forge
ca-certificates 2018.11.29 ha4d7672_0 conda-forge
certifi 2018.11.29 py36_1000 conda-forge
cffi 1.11.5 py36h9745a5d_1001 conda-forge
chardet 3.0.4 py36_1003 conda-forge
cryptography 2.4.2 py36h1ba5d50_0
freetype 2.9.1 h94bbf69_1005 conda-forge
gast 0.2.2 pypi_0 pypi
grpcio 1.18.0 pypi_0 pypi
h5py 2.9.0 nompi_py36hf008753_1102 conda-forge
hdf5 1.10.4 nompi_h11e915b_1105 conda-forge
idna 2.8 py36_1000 conda-forge
jpeg 9c h14c3975_1001 conda-forge
keras 2.2.4 pypi_0 pypi
keras-applications 1.0.7 pypi_0 pypi
keras-preprocessing 1.0.8 pypi_0 pypi
libffi 3.2.1 hf484d3e_1005 conda-forge
libgcc-ng 7.3.0 hdf63c60_0 conda-forge
libgfortran-ng 7.2.0 hdf63c60_3 conda-forge
libpng 1.6.36 h84994c4_1000 conda-forge
libstdcxx-ng 7.3.0 hdf63c60_0 conda-forge
libtiff 4.0.10 h648cc4a_1001 conda-forge
markdown 3.0.1 pypi_0 pypi
ncurses 6.1 hf484d3e_1002 conda-forge
numpy 1.14.5 pypi_0 pypi
olefile 0.46 py_0 conda-forge
openblas 0.3.3 h9ac9557_1001 conda-forge
openssl 1.1.1a h14c3975_1000 conda-forge
pillow 5.4.1 py36h00a061d_1000 conda-forge
pip 19.0.1 py36_0 conda-forge
protobuf 3.6.1 pypi_0 pypi
pycparser 2.19 py_0 conda-forge
pyopenssl 19.0.0 py36_0 conda-forge
pysocks 1.6.8 py36_1002 conda-forge
python 3.6.8 h0371630_0
pyyaml 3.13 py36h14c3975_1001 conda-forge
readline 7.0 hf8c457e_1001 conda-forge
requests 2.21.0 py36_1000 conda-forge
scipy 1.2.0 py36_blas_openblash1522bff_1201 [blas_openblas] conda-forge
setuptools 39.1.0 pypi_0 pypi
six 1.12.0 pypi_0 pypi
sqlite 3.26.0 h67949de_1000 conda-forge
tensorboard 1.10.0 pypi_0 pypi
tensorflow 1.10.0 pypi_0 pypi
tensorflow-hub 0.2.0 pypi_0 pypi
tensorflow-probability 0.5.0 pypi_0 pypi
termcolor 1.1.0 pypi_0 pypi
tk 8.6.9 h84994c4_1000 conda-forge
urllib3 1.24.1 py36_1000 conda-forge
werkzeug 0.14.1 pypi_0 pypi
wheel 0.32.3 pypi_0 pypi
xz 5.2.4 h14c3975_1001 conda-forge
yaml 0.1.7 h14c3975_1001 conda-forge
zlib 1.2.11 h14c3975_1004 conda-forge
```