The environment is inconsistent, please check the package plan carefully - cvxopt

Question

I have tried to install cvxopt for macOS Sierra 10.12.6 .

Than I have tried to solve this problem by all the tips of The environment is inconsistent, please check the package plan carefully but non of them worked and gave similar error messages like the one bellow.

I have tried:

• conda clean --all [and then] conda update --all
• conda update --all [only]
• conda install
• conda install anaconda
• one by one installing the problematic packages

Main ERROR message after conda install -c anaconda cvxopt

MyMachine:~ me$ conda install -c anaconda cvxopt 
Collecting package metadata (current_repodata.json): done
Solving environment: - 
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:

  - omnia/osx-64::autograd==1.1.2=np112py36_0
failed
Collecting package metadata (repodata.json): done
Solving environment: - 
The environment is inconsistent, please check the package plan carefully
The following packages are causing the inconsistency:

  - omnia/osx-64::autograd==1.1.2=np112py36_0
failed

UnsatisfiableError: The following specifications were found to be incompatible with each other:

  - anaconda/osx-64::pandas==0.24.2=py36h0a44026_0 -> numpy[version='>=1.12.1,<2.0a0']
  - anaconda/osx-64::quandl==3.4.5=py36_0 -> numpy[version='>=1.8']
  - autograd -> numpy=1.12
  - conda-forge/noarch::torchfile==0.1.0=py_0 -> numpy
  - conda-forge/noarch::visdom==0.1.8.5=0 -> numpy
  - pkgs/free/osx-64::blaze==0.10.1=py36_0 -> dask -> bokeh[version='>=1.0.0'] -> numpy[version='>=1.7.1']
  - pkgs/free/osx-64::blaze==0.10.1=py36_0 -> pytables[version='>=3.0.0'] -> numexpr
  - pkgs/free/osx-64::datashape==0.5.4=py36_0 -> numpy[version='>=1.7']
  - pkgs/free/osx-64::odo==0.5.0=py36_1 -> datashape[version='>=0.5'] -> numpy[version='>=1.7']
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> bokeh==1.0.4=py36_0 -> numpy[version='>=1.7.1']
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> cython==0.29.6=py36h0a44026_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> gevent==1.4.0=py36h1de35cc_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> importlib_metadata==0.8=py36_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> mkl-service==1.1.2=py36hfbe908c_5
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> numexpr==2.6.9=py36h7413580_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> ply==3.11=py36_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> scikit-learn==0.20.3=py36h27c97d8_0
  - pkgs/main/osx-64::anaconda==2019.03=py36_0 -> zipp==0.3.3=py36_1
  - pkgs/main/osx-64::astropy==3.1.2=py36h1de35cc_0 -> numpy[version='>=1.13.3,<2.0a0']
  - pkgs/main/osx-64::bkcharts==0.2=py36h073222e_0 -> numpy[version='>=1.7.1']
  - pkgs/main/osx-64::bokeh==1.0.4=py36_0 -> numpy[version='>=1.7.1']
  - pkgs/main/osx-64::bottleneck==1.2.1=py36h1d22016_1 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::cython==0.29.6=py36h0a44026_0
  - pkgs/main/osx-64::dask==1.1.4=py36_1 -> bokeh[version='>=0.13.0'] -> numpy[version='>=1.7.1']
  - pkgs/main/osx-64::gevent==1.4.0=py36h1de35cc_0
  - pkgs/main/osx-64::h5py==2.9.0=py36h3134771_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::imageio==2.5.0=py36_0 -> numpy
  - pkgs/main/osx-64::importlib_metadata==0.8=py36_0 -> zipp[version='>=0.3.2']
  - pkgs/main/osx-64::matplotlib==3.0.3=py36h54f8f79_0 -> numpy
  - pkgs/main/osx-64::mkl-service==1.1.2=py36hfbe908c_5
  - pkgs/main/osx-64::mkl_fft==1.0.10=py36h5e564d8_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::numba==0.43.1=py36h6440ff4_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::numexpr==2.6.9=py36h7413580_0 -> numpy[version='>=1.15.4,<2.0a0']
  - pkgs/main/osx-64::numpy-base==1.16.2=py36h6575580_0 -> numpy==1.16.2=py36hacdab7b_0
  - pkgs/main/osx-64::numpy==1.16.2=py36hacdab7b_0
  - pkgs/main/osx-64::path.py==11.5.0=py36_0 -> importlib_metadata[version='>=0.5']
  - pkgs/main/osx-64::patsy==0.5.1=py36_0 -> numpy[version='>=1.4.0']
  - pkgs/main/osx-64::ply==3.11=py36_0
  - pkgs/main/osx-64::pytables==3.5.1=py36h5bccee9_0 -> numexpr -> numpy[version='>=1.15.4,<2.0a0']
  - pkgs/main/osx-64::pytest-arraydiff==0.3=py36h39e3cac_0 -> numpy
  - pkgs/main/osx-64::pytest-astropy==0.5.0=py36_0 -> pytest-arraydiff[version='>=0.1'] -> numpy
  - pkgs/main/osx-64::pytest-doctestplus==0.3.0=py36_0 -> numpy[version='>=1.10']
  - pkgs/main/osx-64::pywavelets==1.0.2=py36h1d22016_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::scikit-image==0.14.2=py36h0a44026_0 -> imageio[version='>=2.1.0'] -> numpy
  - pkgs/main/osx-64::scikit-learn==0.20.3=py36h27c97d8_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::scipy==1.2.1=py36h1410ff5_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::seaborn==0.9.0=py36_0 -> matplotlib[version='>=1.4.3'] -> numpy
  - pkgs/main/osx-64::statsmodels==0.9.0=py36h1d22016_0 -> numpy[version='>=1.11.3,<2.0a0']
  - pkgs/main/osx-64::zipp==0.3.3=py36_1

Answer 1

1. just uninstall anaconda https://docs.anaconda.com/anaconda/install/uninstall/ with all it's packages than reinstall.
2. if that did not work than reinstall all other package management tool.: homebrew, miniconda, pip and anaconda.