[ELPA] New package: hcel

[Yuchen Pei]

Hello,

I'd like to submit my little package called hcel[1] to ELPA.

It is a Haskell codebase explorer, using the server program provided by
haskell-code-explorer[2], which I ported to recent GHC version[3] and
I named my port / fork hcel.

[1] https://g.ypei.me/hcel.git/tree/lisp
[2] https://github.com/alexwl/haskell-code-explorer
[3] https://g.ypei.me/hcel.git/about/

I'm not sure whether it is unusual to submit a package that relies on a
self-hosted free software server program, but I am also not aware of
packages doing anything similar.  There are packages offering related
functionalities, like eglot, which can work with
haskell-language-server.  However, haskell-language-server requires more
ram and cpu, and does not support cross-package find-definition and
references.

Basically, this is an emacs version of the web client that is included
in the original haskell-code-explorer.  In general, I think emacs as an
alternative client to the web browser is a way to avoid nonfree
javascript, similar to alternative web frontends (e.g. invidious,
teddit, haketilo), but better (because emacs).  Ideally there should be
an "emacs app store" offering (GPL covered) clients to all sorts of web
services, which could be a subset of ELPA packages, to advance the user
freedom of at least emacs users.  But I digress.

The server and client programs are currently in the same repo, and I
hold the copyright of the emacs package, but not the server.  I can
assign the copyright of the emacs package and separate it out into its
own git repo of course, and I can also ask the original authors for
copyright assignment if needed.

I have been using this package for a week or two, and expect to use it
as aid for writing Haskell programs.  So as long as I write Haskell and
the package has not been superceded by other tools like
haskell-language-server, I am motivated to make sure it works well.

What do you think?

Best,
Yuchen

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