gfbot@gfbot-VirtualBox:~/Escritorio/compa/helios-server$ virtualenv env
Running virtualenv with interpreter /usr/bin/python2
New python executable in /home/gfbot/Escritorio/compa/helios-server/env/bin/python2
Also creating executable in /home/gfbot/Escritorio/compa/helios-server/env/bin/python
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 2363, in <module>
    main()
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 719, in main
    symlink=options.symlink)
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 942, in create_environment
    site_packages=site_packages, clear=clear, symlink=symlink))
  File "/usr/lib/python3/dist-packages/virtualenv.py", line 1400, in install_python
    os.symlink(py_executable_base, full_pth)
OSError: [Errno 30] Read-only file system