Don‘t forget capital crimes whose sentences pronounced by a judge once upon a time did come with wordings like “shall be hanged from the neck until dead” and such. That one is a “real” passive, but I don't think of yours as such. Native speakers don’t consciously think of every single past participle as being passive the way this question appears to, no more so than we think of ...
The phrase hung, drawn and quartered would seem to be an exception to the phenomenon of "hanged" being the only form for that form of execution. However, a Google NGrams comparison of the two forms of the phrase hanged/hung, drawn and quartered shows a different story.
b: to suspend by the neck until dead —often hanged in the past Thus the past tense of "hang" in the execution sense is "hanged" but if this is to happen in the future, is it He will be hung Or He will be hanged It seems odd that the future tense would have anything to do with past tense.
Hung vs Hanged: “going to be hung” or “going to be hanged”?
I would use "hangs". "Gets hanged" is inappropriate and awkward, saying that the software has been executed by hanging, and "gets hung" invokes a slang expression regarding the size of sexual anatomy. ("Gets hung up" would avoid this, but "hangs" is still better.) Fun fact: being sentenced to "death by hanging" and "to be hung by the neck until dead" denote different forms of execution. "Death ...
Usage For centuries, hanged and hung were used interchangeably as the past participle of hang. However, most contemporary usage guides insist that hanged, not hung, should be used when referring to executions: convicted killers are hanged; posters are hung. This looks to me like an attempt to dictate practice.