Port to GHC 9.x.x and emacs package

[ycpei]

Hello,

I ported haskell-code-explorer to GHC 9.x.x, more specifically 9.2.2 but probably at most only minor changes are needed for other versions with major version 9. Recently I have been happily using an Emacs package to talk to the server exclusively, so I removed the js client. You may find the last commit with a web client at https://g.ypei.me/hcel.git/tree/?h=last-web-client. Though my fork is currently just an indexer / server now, I might add back a simpler web client that does not require handling npm vulnerabilities once I have improved the server more (e.g. removing dependency on cabal-helper if possible).

I am happy to send pull requests here, if folks are ok with the license (AGPLv3+) covering my code.

Best,
Yuchen

[alexwl]

Hello,

Thank you for working on this!

Pull requests are welcome. I'm perfectly ok with the AGPLv3+ license.

[ycpei]

On Mon 2022-09-19 05:55:05 -0700, Alexey Kiryushin wrote: Hello, Thank you for working on this! Pull requests are welcome. I'm perfectly ok with the AGPLv3+ license.

Great! I will prepare them in the next few days. A quick question: do you want the code in the pull requests to retain the CPP templates used for GHC version compatibility? In my port I removed them all for simplicity. Best, Yuchen

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[alexwl]

I believe it's better to retain the CPP templates.