With the last change in python-appdirs
https://build.opensuse.org/request/show/633233 , upgrade to current Tumbleweed
from Leap 15.0 fails to work due to python3-appdirs install failed.

2018-09-08 10:11:00 <5> install(3439) [zypp] Exception.cc(log):166
RpmDb.cc(doInstallPackage):2093 THROW:    Subprocess failed. Error: RPM failed:
error: unpacking of archive failed on file
/usr/lib/python3.6/site-packages/appdirs-1.4.3-py3.6.egg-info: cpio: File from
package already exists as a directory in system
2018-09-08 10:11:00 <5> install(3439) [zypp] Exception.cc(log):166 error:
python3-appdirs-1.4.3-2.1.noarch: install failed 
2018-09-08 10:11:00 <5> install(3439) [zypp] Exception.cc(log):166 error:
python3-appdirs-1.4.3-lp150.1.6.noarch: erase skipped
2018-09-08 10:11:00 <5> install(3439) [zypp] Exception.cc(log):166 
2018-09-08 10:11:01 <0> install(3439) [Pkg] Callbacks.YCP.cc(evaluate):240
Evaluating callback (registered funciton: ruby_reference)
2018-09-08 10:11:01 <0> install(3439) [Ruby]
binary/Yast.cc(ycp_module_call_ycp_function):282 Dynamic Proxy:
[UI::WidgetExists] with [5] params 
2018-09-08 10:11:01 <0> install(3439) [Ruby]
binary/Yast.cc(ycp_module_call_ycp_function):291 Namespace created from UI
2018-09-08 10:11:01 <0> install(3439) [ui]
YUINamespace.cc(createFunctionCall):1035 overloaded WidgetExists, 2@46
2018-09-08 10:11:01 <0> install(3439) [Ruby]
binary/Yast.cc(ycp_module_call_ycp_function):326 Call WidgetExists
2018-09-08 10:11:01 <0> install(3439) [Ruby]
binary/Yast.cc(ycp_module_call_ycp_function):332 Append parameter
`progressCurrentPackage
2018-09-08 10:11:01 <0> install(3439) [ui]
YUINamespace.cc(finishParameters):915 Actual type: <unspec> (symbol)
2018-09-08 10:11:01 <0> install(3439) [ui]
YUINamespace.cc(finishParameters):932 Candidate: boolean WidgetExists (symbol)
MATCH: 0
2018-09-08 10:11:01 <1> install(3439) [Ruby] modules/PackageCallbacks.rb:455
DonePackage(error: 3, reason: 'Subprocess failed. Error: RPM failed: error:
unpacking of archive failed on file
/usr/lib/python3.6/site-packages/appdirs-1.4.3-py3.6.egg-info: cpio: File from
package already exists as a directory in system
error: python3-appdirs-1.4.3-2.1.noarch: install failed 
error: python3-appdirs-1.4.3-lp150.1.6.noarch: erase skipped
')