desktop-packages team mailing list archive

[Launchpad Bug Tracker <1397750@xxxxxxxxxxxxxxxxxx>]

** Branch linked: lp:ubuntu/vivid-proposed/system-config-printer

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to system-config-printer in Ubuntu.
https://bugs.launchpad.net/bugs/1397750

Title:
  Not able to install packages using the PackageKit D-Bus API

Status in aptdaemon package in Ubuntu:
  New
Status in system-config-printer package in Ubuntu:
  In Progress

Bug description:
  I am on Ubuntu Utopic (14.10) and want to do the following, preferably
  with a Python script.

  I want to install a printer driver package from Epson (which is
  available as both DEB and RPM) through its apt or yum repository so that
  future updates get installed automatically through the distro's update
  mechanism. I also want to assure by means of a key fingerprint that
  repository and package are really from Epson.

  The package name for example is

  epson-inkjet-printer-escpr

  The key fingerprint is

  E5220FB7014D0FBDA50DFC2BE5E86C008AA65D56

  and the Debian package repository is

  deb http://download.ebz.epson.net/dsc/op/stable/debian/ lsb3.2 main

  This data is polled from OpenPrinting:

  https://www.openprinting.org/query.cgi?moreinfo=1&showprinterid=1&onlynewestdriverpackages=0&architectures=amd64&noobsoletes=1&onlyfree=0&onlymanufacturer=0&onlydownload=1&packagesystem=deb&onlysigneddriverpackages=0&format=xml&type=drivers&printer=MFG:EPSON;MDL
  :EP-801A%20Series;DES:EPSON%20EP-801A%20Series;CLS:PRINTER;

  One can replace the packagesystem=deb in the URL by packagesystem=rpm
  for RPM-based distros.

  Now I run a script of system-config-printer,
  /usr/share/system-config-printer/install-printerdriver.py via the command

  install-printerdriver 'epson-inkjet-printer-escpr' 'deb
  http://download.ebz.epson.net/dsc/op/stable/debian/ lsb3.2 main'
  'E5220FB7014D0FBDA50DFC2BE5E86C008AA65D56'

  Or by pasting the commands at the python prompt:

  till@till-twist:~$ python3
  Python 3.4.2 (default, Oct  8 2014, 13:08:17) 
  [GCC 4.9.1] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  >>> from gi.repository import GLib, PackageKitGlib
  >>> import sys
  >>> def progress(progress, type, user_data):
  ...    pass
  ... 
  >>> package = 'epson-inkjet-printer-escpr'
  >>> repo = 'deb http://download.ebz.epson.net/dsc/op/stable/debian/ lsb3.2 main'
  >>> repo_gpg_id = 'E5220FB7014D0FBDA50DFC2BE5E86C008AA65D56'
  >>> pk = PackageKitGlib.Client()
  >>> res = pk.install_signature(PackageKitGlib.SigTypeEnum.GPG, repo_gpg_id, '', None, progress, None)
  >>> res.get_exit_code()
  <enum PK_EXIT_ENUM_SUCCESS of type PkExitEnum>
  >>> res = pk.resolve(PackageKitGlib.FilterEnum.NONE, [package], None, lambda p, t, d: True, None)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  GLib.Error: pk_client_error: Package name epson-inkjet-printer-escpr could not be resolved. (263)
  >>> res = pk.repo_enable(repo, True, None, progress, None)
  >>> res = pk.refresh_cache(False, None, progress, None)
  >>> res = pk.resolve(PackageKitGlib.FilterEnum.NONE, [package], None, lambda p, t, d: True, None)
  >>> package_ids = res.get_package_array()
  >>> package_id = package_ids[0].get_id()
  >>> package_id
  'epson-inkjet-printer-escpr;1.4.1-1lsb3.2;amd64;printdriver'
  >>> package_ids[0].get_info() & PackageKitGlib.InfoEnum.INSTALLED
  0
  >>> res = pk.install_packages(True, [package_id], None, progress, None)
  Traceback (most recent call last):
    File "<stdin>", line 1, in <module>
  GLib.Error: pk_client_error: The version 1.4.1-1lsb3.2/printdriver of epson-inkjet-printer-escpr isn't available. (263)
  >>> res = pk.install_packages(True, ['epson-inkjet-printer-escpr;1.4.1-1lsb3.2;amd64;'], None, progress, None)
  >>> res = pk.get_files([package_id], None, progress, None)
  >>> files = res.get_files_array()
  >>>

  The problem is that the step of actually installing the package ("res
  = pk.install_packages(..)") errors. It says:

  The version 1.4.1-1lsb3.2/printdriver of epson-inkjet-printer-escpr
  isn't available.

  So the version number is messed up ("/printdriver" added) and
  therefore the package not found. If I manipulate the package ID
  somewhat, removing the "printdriver" in the end, the package
  installation works (I have checked in another terminal that the
  package got actually installed).

  The same error occurs with "pkcon install epson-inkjet-printer-escpr"
  on the command line.

  The problem seems not to be caused by the transition from Python 2 to
  Python3. I can paste the command sequence above also into Python 2 and
  get the same results.

  Please check whether this is really caused by aptdemon, perhaps it can
  also be the PackageKit client.

  Yje bug makes the automatic printer driver installation by system-
  config-printer not working any more, therefore i set its importance to
  "High".

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1397750/+subscriptions