Bug#958571: hypercorn build-depends on package that is not in testing.

[peter green]

Source: hypercorn
Version: 0.9.4-1
Severity: serious

hypercorn build-depends on python3-uvloop which is not available in testing due 
to https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=950165 . Either uvloop 
needs to be fixed, hypercorn needs to be modified to not build-depend on uvloop 
or hypercorn needs to be removed from testing too.