[Bug 1795278] Re: software-properties-{qt, kde} attempts to use KUrl but it doesn't exist

[Walter Lapchynski]

There are no PyKDE imports anymore, only PyQt. That said, replacing
`KUrl.fromPath` with just `QUrl` should resolve that.

But that's not our only issue:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/softwareproperties/qt/SoftwarePropertiesQt.py", line 713, in add_key_clicked
    filename = KFileDialog.getOpenFileName(url, 'application/pgp-keys', self.userinterface, _("Import key"))
NameError: name 'KFileDialog' is not defined

So we replace `KFileDialog` with `QFileDialog` and move some arguments
around:

    filename = QFileDialog.getOpenFileName(self.userinterface, _("Import
key"), url, 'application/pgp-keys')

The only other thing missing is that KFileDialog wanted a KUrl while
QFileDialog wants a string. So we should cast our QUrl call:

    url = str(QUrl(home))

Maybe there's a prettier/better way to do this, but that's what I got
for 10 minutes which is more progress than I can say this bug has had in
the past XD If people can test those changes, it would be greatly
appreciated.

** Changed in: software-properties (Ubuntu)
       Status: Confirmed => Triaged

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https://bugs.launchpad.net/bugs/1795278

Title:
  software-properties-{qt,kde} attempts to use KUrl but it doesn't exist

Status in software-properties package in Ubuntu:
  Triaged

Bug description:
  Release: Kubuntu 18.04
  Version: 0.96.24.32.1

  When clicking the "Import Key" button in the "Authentication" section
  of the panel it throws this error:

      Traceback (most recent call last):
        File "/usr/lib/python3/dist-packages/softwareproperties/kde/SoftwarePropertiesKDE.py", line 667, in add_key_clicked
          url = KUrl.fromPath(home)
      NameError: name 'KUrl' is not defined

  While this doesn't crash the program it causes nothing to happen when
  clicking the button. Running the program in a terminal reveals the
  error being printed to stderr.

  After debugging it appears KUrl doesn't exist anywhere and I'm not
  sure if's a python module that has changed.

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