libhugs-unix-bundled 98.200609.21-5.4build2 (riscv64 binary) in ubuntu focal

 This package gives you access to the set of operating system
 services standardised by POSIX 1003.1b (or the IEEE Portable
 Operating System Interface for Computing Environments -
 IEEE Std. 1003.1).
 .
 The package is not supported under Windows (except under Cygwin).
 .
 This is the version bundled with the interpreter.