title: Why pip does not install a package?
body: <p><code>pip install</code> indicates that the <code>nitime</code> package was successfully installed but it is not. Why is this?</p>
  <pre><code>$ pip3 install nitime
  Defaulting to user installation because normal site-packages is not writeable
  Collecting nitime
    Using cached nitime-0.9.tar.gz (6.2 MB)
    Preparing metadata (setup.py) ... done
  Requirement already satisfied: numpy in ./.local/lib/python3.8/site-packages (from nitime) (1.22.3)
  Requirement already satisfied: cython in /usr/lib64/python3.8/site-packages (from nitime) (0.29.14)
  Requirement already satisfied: scipy in ./.local/lib/python3.8/site-packages (from nitime) (1.8.0)
  Requirement already satisfied: matplotlib in /usr/lib64/python3.8/site-packages (from nitime) (3.2.2)
  Requirement already satisfied: networkx in /usr/lib/python3.8/site-packages (from nitime) (2.5)
  Requirement already satisfied: nibabel in ./.local/lib/python3.8/site-packages (from nitime) (3.2.2)
  Requirement already satisfied: cycler&gt;=0.10 in /usr/lib/python3.8/site-packages (from matplotlib-&gt;nitime) (0.10.0)
  Requirement already satisfied: kiwisolver&gt;=1.0.1 in /usr/lib64/python3.8/site-packages (from matplotlib-&gt;nitime) (1.3.1)
  Requirement already satisfied: pyparsing!=2.0.4,!=2.1.2,!=2.1.6,&gt;=2.0.1 in /usr/lib/python3.8/site-packages (from matplotlib-&gt;nitime) (2.4.7)
  Requirement already satisfied: python-dateutil&gt;=2.1 in ./.local/lib/python3.8/site-packages (from matplotlib-&gt;nitime) (2.8.2)
  Requirement already satisfied: decorator&gt;=4.3.0 in /usr/lib/python3.8/site-packages (from networkx-&gt;nitime) (4.4.0)
  Requirement already satisfied: packaging&gt;=14.3 in ./.local/lib/python3.8/site-packages (from nibabel-&gt;nitime) (21.3)
  Requirement already satisfied: setuptools in ./.local/lib/python3.8/site-packages (from nibabel-&gt;nitime) (60.6.0)
  Requirement already satisfied: six in /usr/lib/python3.8/site-packages (from cycler&gt;=0.10-&gt;matplotlib-&gt;nitime) (1.14.0)
  Using legacy 'setup.py install' for nitime, since package 'wheel' is not installed.
  Installing collected packages: nitime
    Running setup.py install for nitime ... done
  Successfully installed nitime
  $ pip3 show nitime
  WARNING: Package(s) not found: nitime
  $ python3 -c &quot;import nitime&quot;
  Traceback (most recent call last):
    File &quot;&lt;string&gt;&quot;, line 1, in &lt;module&gt;
  ModuleNotFoundError: No module named 'nitime'
  
  
  $ pip3 show pip
  Name: pip
  Version: 22.0.4
  Summary: The PyPA recommended tool for installing Python packages.
  Home-page: https://pip.pypa.io/
  Author: The pip developers
  Author-email: distutils-sig@python.org
  License: MIT
  Location: /home/servoz/.local/lib/python3.8/site-packages
  Requires: 
  Required-by: 
  $ uname -a
  Linux 5.11.22-100.fc32.x86_64 #1 SMP Wed May 19 18:58:25 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
  $ python3 -V
  Python 3.8.10
  </code></pre>
  <p><strong>EDIT:</strong>
  Ok! I managed to install using <code>dnf install python3-nitime</code> (fedora).</p>
  <p>I don't really understand why pip doesn't work with nitime on fedora ...</p>