/usr/lib/ is in libhugs-parsec-bundled 98.200609.21-5.3ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/hugs/
/usr/lib/hugs/packages/
/usr/lib/hugs/packages/parsec/
/usr/lib/hugs/packages/parsec/Paths_parsec.hs
/usr/lib/hugs/packages/parsec/Text/
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Token.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Language.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Pos.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Expr.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Char.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Combinator.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Perm.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Prim.hs
/usr/lib/hugs/packages/parsec/Text/ParserCombinators/Parsec/Error.hs