selectrum VS haskell-mode

Selectrum's wiki has some basic info on completing-read: https://github.com/radian-software/selectrum/wiki/Tips-for-Creating-Commands

[1] https://github.com/radian-software/selectrum/issues/114

I noticed over the weekend that the venerable Selectrum package made by Radon Rosborough has been deprecated in favor of Daniel Mendler's Vertico package.

https://github.com/radian-software/selectrum is getting superceded by https://github.com/minad/vertico within just a year or two.

I have been using straight for a while now and I think it is great! The ability to lazy load everything by default does a lot to make Emacs snappier (or at the very least, faster to boot). Being able to pull packages directly from git (be it local or a forge) makes package development a lot easier. raxod has a lot of really sleek, modern emacs packages that I would encourage everyone to check out, spectrum[0] and ctrf[1] in particular are really great as well.

[0] https://github.com/radian-software/selectrum

selectrum

;;https://github.com/raxod502/selectrum (defun force-debug (func &rest args) (condition-case e (apply func args) ((debug error) (signal (car e) (cdr e))))) (advice-add #'selectrum--minibuffer-post-command-hook :around #'force-debug) (selectrum-mode +1) ;; to make sorting and filtering more intelligent (selectrum-prescient-mode +1) ;; to save your command history on disk, so the sorting gets more ;; intelligent over time (prescient-persist-mode +1) (setq completion-styles '(orderless)) ;; Persist history over Emacs restarts (savehist-mode) ;; Optional performance optimization ;; by highlighting only the visible candidates. (setq orderless-skip-highlighting (lambda () selectrum-is-active)) (setq selectrum-highlight-candidates-function #'orderless-highlight-matches) (setq selectrum-prescient-enable-filtering nil) (selectrum-prescient-mode +1) (prescient-persist-mode +1) (use-package marginalia :ensure t :config (marginalia-mode)) (use-package embark :ensure t :bind (("C-." . embark-act) ;; pick some comfortable binding ("C-;" . embark-dwim) ;; good alternative: M-. ("C-h B" . embark-bindings)) ;; alternative for \describe-bindings' :init ;; Optionally replace the key help with a completing-read interface (setq prefix-help-command #'embark-prefix-help-command) :config ;; Hide the mode line of the Embark live/completions buffers (add-to-list 'display-buffer-alist '("\`\Embark Collect \(Live\|Completions\)\" nil (window-parameters (mode-line-format . none))))) ;; Consult users will also want the embark-consult package. (use-package embark-consult :ensure t :after (embark consult) :demand t ; only necessary if you have the hook below ;; if you want to have consult previews as you move around an ;; auto-updating embark collect buffer :hook (embark-collect-mode . consult-preview-at-point-mode))`

Selectrum and Prescient would be nice.

You can use GHCI's debugger through Emacs's haskell-debug-mode (part of the haskell-mode package), and probably through other editor/IDEs as well, a programming editor like Emacs or Vim simply needs to be able to run a GHCI session and send commands to it.

No, I was only using haskell-mode. So I guess this is LSP's fault, then. Not Emacs's fault and not haskell-mode's fault.

If I made it sound like there's something like IntelliSense today, apologies! We've got <https://github.com/haskell/haskell-mode/blob/master/haskell-...>, but it's type-a-command-and-do-a-search: it's not linked in with completion directly in the setups I've seen.

(In practice, I'm usually starting from a slightly different place: I know I want a Frob and I've got a This and a That, so I do :hoogle This -> That -> Frob and get some options. The thought-process is working backwards from the goal more than forwards from one key object in focus. A different way of working, but I'm not convinced it's less effective.)

My point though was that it's an engineering issue, not a fundamental language limitation. ie not a reason all future languages should shun haskell features. The building blocks to do better at completion than haskell curently does are there.

check if you have any similar config to what caused this issue: https://github.com/haskell/haskell-mode/issues/1777 for me

Package-lint has been on my list, but the maintainer, MELPA's Steve Purcell, has been hesitant about NonGNU ELPA in the past (see this discussion), so I have skipped his packages for now, and also because most of the packages he maintains have a "broken" version tag, most of the time -- the reason here is that MELPA adds these manually, and since he understandably is targetting MELPA, there is little interest from his side to fix that.

You can see the expected output in this PR description.

I use haskell-mode. It has a shortcut for loading a module into REPL, and it also runs hasktags for me. That's literally all I use.

Just as a note from my poking around, this is the "official" way to use a nix-shell with haskell-mode: https://github.com/haskell/haskell-mode/blob/3a019e65b504861d7ea23afbfecd14e5ef63e846/haskell-customize.el#L77