The following contains some errors, it seems that the installed hplip package requires python-qt3 (?) or qt4

$ hp-info

HP Linux Imaging and Printing System (ver. 2.8.7)
Device Information Utility ver. 4.1

Copyright (c) 2001-8 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Using device: hp:/usb/HP_LaserJet_P1006?serial=AC094VM

HP Linux Imaging and Printing System (ver. 2.8.7)
System Tray Status Service ver. 0.1

Copyright (c) 2001-8 Hewlett-Packard Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Traceback (most recent call last):
  File "/usr/bin/hp-systray", line 139, in <module>
    from ui import systemtray_qt3
  File "/usr/share/hplip/ui/systemtray_qt3.py", line 33, in <module>
    from ui_utils import load_pixmap
  File "/usr/share/hplip/ui/ui_utils.py", line 32, in <module>
    from qt import *
ImportError: No module named qt
warning: Unable to connect to dbus. Is hp-systray running?

hp:/usb/HP_LaserJet_P1006?serial=AC094VM

Device Parameters (dynamic data):
  Parameter                     Value(s)                                                  
  ----------------------------  ----------------------------------------------------------
  agent1-ack                    False                                                     
  agent1-desc                   Black toner cartridge                                     
  agent1-dvc                    0                                                         
  agent1-health                 0                                                         
  agent1-health-desc            Good/OK                                                   
  agent1-hp-ink                 False                                                     
  agent1-id                     0                                                         
  agent1-kind                   4                                                         
  agent1-known                  False                                                     
  agent1-level                  100                                                       
  agent1-level-trigger          0                                                         
  agent1-sku                    35A                                                       
  agent1-type                   1                                                         
  agent1-virgin                 False                                                     
  back-end                      hp                                                        
  cups-printer                  HP_LaserJet_P1006                                         
  cups-uri                      hp:/usb/HP_LaserJet_P1006?serial=AC094VM                  
  dev-file                                                                                
  device-state                  1                                                         
  device-uri                    hp:/usb/HP_LaserJet_P1006?serial=AC094VM                  
  deviceid                      MFG:Hewlett-Packard;MDL:HP LaserJet                       
                                P1006;CMD:HBS,PJL,ACL;CLS:PRINTER;DES:HP LaserJet         
                                P1006;FWVER:20070517;                                     
  duplexer                      0                                                         
  error-state                   0                                                         
  host                                                                                    
  in-tray1                      1                                                         
  in-tray2                      1                                                         
  is-hp                         True                                                      
  media-path                    1                                                         
  panel                         0                                                         
  panel-line1                                                                             
  panel-line2                                                                             
  photo-tray                    0                                                         
  port                          1                                                         
  r                             0                                                         
  revision                      254                                                       
  rg                            000                                                       
  rr                            000000                                                    
  rs                            000000000                                                 
  serial                        AC094VM                                                   
  status-code                   1000                                                      
  status-desc                   Idle.                                                     
  supply-door                   1                                                         
  top-door                      1                                                         

Model Parameters (static data):
  Parameter                     Value(s)                                                  
  ----------------------------  ----------------------------------------------------------
  align-type                    0                                                         
  clean-type                    0                                                         
  color-cal-type                0                                                         
  copy-type                     0                                                         
  embedded-server-type          0                                                         
  fax-type                      0                                                         
  fw-download                   1                                                         
  icon                          HP_LaserJet_1012.png                                      
  io-mfp-mode                   6                                                         
  io-mode                       1                                                         
  io-support                    2                                                         
  job-storage                   0                                                         
  linefeed-cal-type             0                                                         
  model                         HP_LaserJet_P1006                                         
  model-ui                      HP LaserJet p1006                                         
  model1                        HP LaserJet P1006 Printer                                 
  panel-check-type              0                                                         
  pcard-type                    0                                                         
  plugin                        1                                                         
  power-settings                0                                                         
  pq-diag-type                  0                                                         
  r-type                        0                                                         
  r0-agent1-kind                4                                                         
  r0-agent1-sku                 35A                                                       
  r0-agent1-type                1                                                         
  scan-style                    0                                                         
  scan-type                     0                                                         
  status-battery-check          0                                                         
  status-dynamic-counters       0                                                         
  status-type                   8                                                         
  support-released              1                                                         
  support-type                  2                                                         
  support-ver                   2.8.2                                                     
  tech-class                    ['LJm1005']                                               
  tech-subclass                 ['Normal']                                                
  tech-type                     3                                                         
  usb-pid                       4117                                                      
  usb-vid                       03f0                                                      

Done.