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Newcomer help wanted in the Haskell Debugger

Haskell Community [Unofficial] May 28, 2026
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Hi all,

In preparation for ZuriHac, I’d love to have some help on a few haskell-debugger issues.

These issues are especially relevant here because they will help more people use the debugger, and I do hope to onboard more people to using it in Zurich!

(Hopefully, some of you will even want to hack on these or other Haskell debugger features/bugs there).

If you want to work on any of these, do reply in the issue thread, to make sure two people don’t end up doing overlapping work:

  • Emacs Support: we’ve got instructions and tested the debugger with VSCode, nvim-dap, and vimspector; however, we need an Emacs user to take the lead in setting up haskell-debugger with a DAP plugin, testing it, and writing down how to do it for other users (@simonpj is on Emacs, and I have yet to get him to try the debugger).

  • Installing with stack fails: Stack users! Please help make the debugger installable using stack. I don’t know what the required details are, so do come help.

  • Ship via GHCup: GHCup now supports 3rd party tools, and @hasufell suggested we start distributing haskell-debugger through GHCup in this way. Installation is currently a bit subtle (because of the flags we must pass to cabal-install), so providing ready to use binaries in GHCup would be excellent.

  • New Debugger Logo: We would love to have a cool logo for the debugger VSCode extension! It should ideally be recognizable when seen at a “small” scale on the VSCode marketplace.

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