title: How to specify version ranges in Conda environment.yml
body: <p>Is it possible to specify version ranges in an environment.yml file for Conda packages?</p>
  
  <p>The <a href="https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#creating-an-environment-file-manually" rel="noreferrer">official documentation</a> mentions a few examples that rely on the asterisks (*) and I am wondering if that is the only feature or whether Conda supports other more sophisticated version ranges such as those <a href="https://docs.npmjs.com/about-semantic-versioning#using-semantic-versioning-to-specify-update-types-your-package-can-accept" rel="noreferrer">supported by npm</a>.</p>
  
  <p>For example, is it possible to install any patch version that is higher or equal to <code>1.2.3</code> (e.g., <code>1.2.10</code> would be fine but <code>1.3.0</code> is not)? </p>