Comment 55 for bug 1486731

% uname -a
Linux pa 4.2.0-0.bpo.1-amd64 #1 SMP Debian 4.2.6-1~bpo8+1 (2015-11-18) x86_64 GNU/Linux

% hp-plugin

HP Linux Imaging and Printing System (ver. 3.15.11)
Plugin Download and Install Utility ver. 2.1

***

HP Linux Imaging and Printing System (ver. 3.15.11)
Plugin Download and Install Utility ver. 2.1

***

Downloading plug-in from: file:///home/pa/1/hplip-3.15.11-plugin.run
\Download in progress.......100%Download in progress.......100%Receiving digital keys: /usr/bin/gpg --homedir /home/pa/.hplip/.gnupg --no-permission-warning --keyserver pgp.mit.edu --recv-keys 0x4ABA2F66DBD5A95894910E0673D770CDA59047B9
Creating directory plugin_tmp
Verifying archive integrity... All good.
Uncompressing HPLIP 3.15.11 Plugin Self Extracting Archive................................................

HP Linux Imaging and Printing System (ver. 3.15.11)
Plugin Installer ver. 3.0

***

Plug-in version: 3.15.11
Installed HPLIP version: 3.15.11
Number of files to install: 42

>>> waiting for a long time <<<

\^CTraceback (most recent call last):
  File "./plugin_install.py", line 249, in <module>
    ok = installPlugin()
  File "./plugin_install.py", line 56, in installPlugin
    status, output = utils.run(cmd, passwordObj)
  File "/usr/share/hplip/base/utils.py", line 1275, in run
    i = child.expect(EXPECT_LIST)
  File "/usr/share/hplip/base/pexpect/__init__.py", line 1418, in expect
    timeout, searchwindowsize)
  File "/usr/share/hplip/base/pexpect/__init__.py", line 1433, in expect_list
    timeout, searchwindowsize)
  File "/usr/share/hplip/base/pexpect/__init__.py", line 1502, in expect_loop
    c = self.read_nonblocking(self.maxread, timeout)
  File "/usr/share/hplip/base/pexpect/__init__.py", line 901, in read_nonblocking
    r, w, e = self.__select([self.child_fd], [], [], timeout)
  File "/usr/share/hplip/base/pexpect/__init__.py", line 1687, in __select
    return select.select(iwtd, owtd, ewtd, timeout)
KeyboardInterrupt
error: Python gobject/dbus may be not installed
error: Plug-in install failed.

# dpkg -l | grep python-gobj
ii python-gobject 3.14.0-1 all Python 2.x bindings for GObject - transitional package
ii python-gobject-2 2.28.6-12+b1 amd64 deprecated static Python bindings for the GObject library

# dpkg -l | grep python-dbus
ii python-dbus 1.2.0-2+b3 amd64 simple interprocess messaging system (Python interface)
ii python-dbus-dev 1.2.0-2 all main loop integration development files for python-dbus

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help https://bugzilla.redhat.com/show_bug.cgi?id=1249414#c9