error-messages
hlint
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| error-messages | hlint | |
|---|---|---|
| 18 | 3 | |
| 73 | 1,432 | |
| - | - | |
| 0.0 | 8.1 | |
| almost 2 years ago | 8 days ago | |
| Haskell | Haskell | |
| - | BSD 3-clause "New" or "Revised" License |
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error-messages
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Why did GHC go from "occurs check failed" to talking about rigid type variables?
The GHC issue tracker or the error message improvement repo are two such places to get clarification (and potentially improve the message even if it turns out to be technically correct).
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Please help!
Indeed there is a ticket and the error message is somewhat better in 9.4 although it still doesn't mention the guard.
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What prevents Haskell from having good error messages?
Note that the Num literal issue is tracked here and there seems to be a good suggestion to fix it: https://github.com/haskell/error-messages/issues/5#issuecomment-1040788806
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GHC: could not deduce [instance]
I think it would be great to post this over at https://github.com/haskell/error-messages too so that we can track it more easily than here on Reddit.
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How to get better compiler error messages?
Also, reminder that https://github.com/haskell/error-messages exists to track these kind of issues. Feel free to open an issue there.
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Unable to get this to compile
If you are able to articulate what aspects of the error messages you find hard to understand, please do open an issue on https://github.com/haskell/error-messages. (Or reply here then I can open an issue for you if you don't have a github account.) It doesn't have to be a concrete suggestion for improvement, even just knowing which messages are bad can be useful.
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Another Confusing Haskell Error Message
Do you know about https://github.com/haskell/error-messages
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Was simplified subsumption worth it for industry Haskell programmers?
The error message is at the least very unhelpful. Please report it on https://github.com/haskell/error-messages/issues/new
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How do I specify the type inside function definition?
Please do open an issue at https://github.com/haskell/error-messages. The issue itself can be as simple as just summarizing what you wrote here, it doesn't have to immediately suggest a good alternative. That issue tracker is in the first place intended to document all error messages that Haskellers struggle with.
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Haskell Error Messages: Come on!
Do check out https://github.com/haskell/error-messages. We have a related discussion here: https://github.com/haskell/error-messages/issues/5, but I think perhaps a separate issue for this case would be good to have.
hlint
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Was simplified subsumption worth it for industry Haskell programmers?
There is an open issue on hlint for it and the situation doesn't seem encouraging for anyone using apply-refact on save for Haskell files.
- create a manage hook on only one workspace
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Write Rust lints without forking Clippy
may want to look at something like https://github.com/ndmitchell/hlint for inspiration. it can be a little finicky but you can express mildly complicated linting rules
What are some alternatives?
ghc - Mirror of the Glasgow Haskell Compiler. Please submit issues and patches to GHC's Gitlab instance (https://gitlab.haskell.org/ghc/ghc). First time contributors are encouraged to get started with the newcomers info (https://gitlab.haskell.org/ghc/ghc/wikis/contributing).
ormolu - A formatter for Haskell source code
tech-proposals - The Haskell Foundation Tech Proposal Process
hadolint - Dockerfile linter, validate inline bash, written in Haskell
error-message-index - A community-driven collection of documentation for Haskell error messages and warnings
ghcid - Very low feature GHCi based IDE
ghc-proposals - Proposed compiler and language changes for GHC and GHC/Haskell
haskell-language-server - Official haskell ide support via language server (LSP). Successor of ghcide & haskell-ide-engine.
pool-conduit - Persistence interface for Haskell allowing multiple storage methods.
haskell-lsp - Haskell library for the Microsoft Language Server Protocol
bisect-binary - Tool to determine relevant parts of binary data
nixfmt - The official (but not yet stable) formatter for Nix code