title: Couldn't create working virtual environment for Python 3.4
body: <p>I <a href="https://docs.python.org/3/using/unix.html#building-python" rel="nofollow">installed Python 3.4.2</a> and Virtualenv 12.0.5 in my Linux Mint 17.1</p>
  
  <p>Then I tried creating:
  <code>$ virtualenv venv</code></p>
  
  <p>And also using --clear and/or -p /usr/bin/python3.4, always getting the messages:</p>
  
  <p><code>Using base prefix '/usr'
  New python executable in venv/bin/python3
  Also creating executable in venv/bin/python
  ERROR: The executable venv/bin/python3 could not be run: [Errno 13] Permission denied</code></p>
  
  <p>Another try was:
  <code>$ pyvenv-3.4 venv</code></p>
  
  <p>It gave no errors on creation, but in the venv/bin file the python3.4 is a symbolic link to /usr/local/bin/python3.4. Then when I activate and install any lib using pip or pip3, then try to import it, I get the error:
  <code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
  ImportError: No module named 'anymoduledownloaded'</code></p>
  
  <p>I always used virtualenv in Python 2.X and never got this kind of errors. Any thoughts on what am I doing wrong?</p>
  
  <p>Thanks!!</p>
  
  <p>=======EDITED=======</p>
  
  <p>This is the output of my partitions (fdisk -l):</p>
  
  <pre><code>Device Boot      Start         End      Blocks   Id  System
  /dev/sda1            2048    98707455    49352704   83  Linux
  /dev/sda2       303507456  3890644991  1793568768    5  Extended
  /dev/sda3   *    98707456   303507455   102400000    7  HPFS/NTFS/exFAT
  /dev/sda4      3890644992  3907028991     8192000   82  Linux swap / Solaris
  /dev/sda5       303509504  3890644991  1793567744    7  HPFS/NTFS/exFAT`
  </code></pre>
  
  <p>And also my fstab:</p>
  
  <pre><code>&lt;file system&gt; &lt;mount point&gt;   &lt;type&gt;  &lt;options&gt;       &lt;dump&gt;  &lt;pass&gt;
  -&gt; was on /dev/sda1 during installation
  UUID=a38f9c6d-3cd9-4486-b896-acbc6182ec61 /               ext4    errors=remount-ro 0       1
  -&gt; swap was on /dev/sda4 during installation
  UUID=efad7b53-79a8-4230-8226-9ca90c68ea9d none            swap    sw              0       0`
  </code></pre>