/usr/bin/hsc2hs-hugs is in hugs 98.200609.21-5.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#! /bin/sh runhugs -98 /usr/lib/hugs/programs/hsc2hs/Main.hs -I/usr/lib/hugs/include "$@"