William Rusnack

use vaulted centos packages to fix old-ghc ci

1

Followed instructions from: https://bitsanddragons.wordpress.com/2024/06/04/fixing-no-urls-in-mirrorlist-error-on-centos-8-stream/

Fixed Point Rounding

2

A [test](https://github.com/haskell/bytestring/blob/46a3aeb179c26d2385f95ba518eaa5464c94ceaa/tests/builder/Data/ByteString/Builder/Tests.hs#L775) for printing a floating point number of `12.345` with two decimal places checks for the result of "12.34". This matches with the result of `showFFloat` but @clyring is...

It is useful to have these for testing. Also, Text Builder has these instances; it just converts them to LazyText and uses that that types instances of Eq and Ord.