Compatibility with GHC 9.8

[rvl]

This patch lets blaze-svg compile with GHC 9.8 and bumps the version to 0.3.7.1.

However, it may be better to edit the package version bounds on Hackage.

[rvl]

Hi @byorgey, there are a few other packages which I know can build with GHC 9.8, if their build-depends version ranges are expanded accordingly. (Because of NixOS/nixpkgs#276275)

Package	Offending bounds	Pull Request
blaze-svg	base <4.19	#2
diagrams-lib	base <4.19, text <2.1	diagrams/diagrams-lib#364
diagrams-postscript	base <4.19, bytestring <0.12
diagrams-svg	base <4.19, text <2.1
statestack	base <4.19	diagrams/statestack#11
svg-builder	base <4.19, bytestring <0.12, text <2.1

Should I open similar PRs on those packages? Or are you happy to make revisions on Hackage?

[byorgey]

Hi @rvl , thanks! I'm slowly working through updating all my packages, so no need to open more PRs, but I do appreciate the nudge.

[rvl]

Great, thanks. 👍

[byorgey]

I went ahead and did this via my own typical workflow, and revised the bounds on Hackage. I appreciate the PR though!