title: fatal error: os/rand.c: No such file or directory
body: <p>Regarding my last question <a href="https://stackoverflow.com/q/66546716/15036724">How to fix deeptoolsintervals fatal error: Python.h?</a>,
  when trying to run <code>plotCoverage.py</code>, I bumped into another error:</p>
  <pre><code>    import pysam
  ModuleNotFoundError: No module named 'pysam'
  </code></pre>
  <p>when trying to install <code>pip3.9 install pysam</code>:</p>
  <pre><code>htslib/hts_os.c:30:21: fatal error: os/rand.c: No such file or directory
      compilation terminated.
      error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
  </code></pre>
  <p>Then I read somewhere that <code>apt-get install liblzma-dev</code> might fix this issue, although installed that successfully, I still have the same error when tying to install <code>pysam</code>.</p>