title: Python TA-lib install error, how solve it?
body: <p>i install TA-lib with below command, </p>
  
  <pre><code>pip install TA-lib
  </code></pre>
  
  <p>but got this error "command 'gcc' failed with exit status 1":</p>
  
  <p><img src="https://i.stack.imgur.com/WrPZb.png" alt=""></p>
  
  <p>checked the <a href="https://github.com/mrjbq7/ta-lib" rel="noreferrer">Troubleshooting</a>, installed the gcc, python-devel, libffi-devel, openssl-devel, but still not working!</p>
  
  <p>then use  <code>conda install -c quantopian ta-lib=0.4.9</code> install talib but show 
   error "The following specifications were found to be in conflict:- py-xgboost, - ta-lib 0.4.9*"
  then <code>conda info ta-lib, it return the"NoPackagesFoundError: Package missing in current linux-64 channels"</code></p>