The app is shown on splunkbase as supporting Splunk Enterprise 8.0, however it doesn't seem to work due to missing libraries in python3:
ERROR ModularInputs - <stderr> Introspecting scheme=citrix_netscaler: File "/opt/splunk/etc/apps/Splunk_TA_citrix-netscaler/bin/ta_util2/job_scheduler.py", line 7, in <module>
ERROR ModularInputs - <stderr> Introspecting scheme=citrix_netscaler: import Queue
ERROR ModularInputs - <stderr> Introspecting scheme=citrix_netscaler: ModuleNotFoundError: No module named 'Queue'
ERROR ModularInputs - Introspecting scheme=citrix_netscaler: script running failed (exited with code 1). ERROR ModularInputs - Unable to initialize modular input "citrix_netscaler" defined in the app "Splunk_TA_citrix-netscaler": Introspecting scheme=citrix_netscaler: script running failed (exited with code 1)..
Does this app support python3 enabled Splunk 8?
Not that it helps, but I am planning an upgrade to version 8 and ran the "Splunk Platform Upgrade Readiness App" it rpoerted there were Python 3 issues in most of the scripts. "Required Action:Update these Python scripts to be dual-compatible with Python 2 and 3"
So appears maybe not fully compatible with Python 3 yet?