title: Failure to install package using Anaconda
body: <p>I want to install PythonOCC.
  From the official documentation (<a href="http://www.pythonocc.org/download/" rel="nofollow noreferrer">http://www.pythonocc.org/download/</a>), i saw that i have to use:</p>
  <pre><code>conda install -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core==0.18.1
  </code></pre>
  <p>So from the base terminal, i typed that command, but i had some conflicts that i am unable to interpet them or find a solution, since this is my first time using Anaconda.
  I am on Ubuntu Linux 20.04.</p>
  <p>This is the error message:</p>
  <pre><code>Collecting package metadata (current_repodata.json): done
  Solving environment: failed with initial frozen solve. Retrying with flexible solve.
  Solving environment: failed with repodata from current_repodata.json, will retry with next repodata source.
  Collecting package metadata (repodata.json): done
  Solving environment: failed with initial frozen solve. Retrying with flexible solve.
  Solving environment: / 
  Found conflicts! Looking for incompatible packages.
  This can take several minutes.  Press CTRL-C to abort.
  failed                                                                          
  
  UnsatisfiableError: The following specifications were found
  to be incompatible with the existing python installation in your environment:
  
  Specifications:
  
    - pythonocc-core==0.18.1 -&gt; python[version='&gt;=2.7,&lt;2.8.0a0|&gt;=3.5,&lt;3.6.0a0|&gt;=3.6,&lt;3.7.0a0']
  
  Your python: python=3.8
  
  If python is on the left-most side of the chain, that's the version you've asked for.
  When python appears to the right, that indicates that the thing on the left is somehow
  not available for the python version you are constrained to. Note that conda will not
  change your python version to a different minor version unless you explicitly specify
  that.
  
  The following specifications were found to be incompatible with your CUDA driver:
  
    - feature:/linux-64::__cuda==10.2=0
    - feature:|@/linux-64::__cuda==10.2=0
  
  Your installed CUDA driver is: 10.2
  </code></pre>
  <p>Any ideas on how to proceed from here?</p>
  <p><strong>EDIT:</strong> After following user's vc 74 suggesttions, i tried these commands:</p>
  <pre><code>conda create -n py36 python=3.6
  conda activate py36
  conda install -c conda-forge -c dlr-sc -c pythonocc -c oce pythonocc-core==0.18.1
  </code></pre>
  <p>This is the new conflict i got:</p>
  <pre><code>Found conflicts! Looking for incompatible packages.
  This can take several minutes.  Press CTRL-C to abort.
  failed                                                                          
  
  UnsatisfiableError: The following specifications were found to be incompatible with each other:
  
  Output in format: Requested package -&gt; Available versionsThe following specifications were found to be incompatible with your CUDA driver:
  
    - feature:/linux-64::__cuda==10.2=0
  
  Your installed CUDA driver is: 10.2
  </code></pre>