libghc-decimal-dev 0.5.1-3build2 (arm64 binary) in ubuntu hirsute

 Library for manipulating decimal numebers, primary for financial arithmetic.
 .
 Decimal number has an integer mantissa and a negative
 exponent. The exponent can be interpreted as the number
 of decimal places in the value.
 .
 This package provides a library for the Haskell programming language.
 See http://www.haskell.org/ for more information on Haskell.