The Haskell Error Index | GHCup

Welcome

This site describes error messages that can be returned by GHCup, including both errors and warnings. Every error and warning has a code that GHCup emits when you run into it—you can look them up below.

So far, 7 GHCup errors and warnings are documented here. If you encounter a message that is not yet documented, please open an issue or submit a pull request with documentation. Pull requests with additional examples and improved explanations for existing messages are also very welcome, as are improvements to the generated site.

This site is a project of The Haskell Foundation. Please get in touch if you have feedback or if you'd like to get involved!

The Messages

Nr.MessageSummarySince
GHCup-00010 Unable to find a download for the requested version/distro GHCup wasn't able to find a binary distribution for the requested tool for the current platform 0.1.19.0
GHCup-00110 The tool is already installed with that version GHCup has already installed the requested version of the tool 0.1.19.0
GHCup-00160 JSON decoding failed GHCup was unable to decode a JSON or YAML document (e.g. metadata file) 0.1.19.0
GHCup-00200 File digest verification failed GHCup tried to verify the integrity/authenticity of a downloaded file, but the verification failed 0.1.19.0
GHCup-00210 GPG verify failed GHCup tried to verify the authenticity of a software channel using GPG, but failed 0.1.19.0
GHCup-00841 A process exited prematurely GHCup executed a subprocess that did not complete successfully 0.1.19.0
GHCup-05841 A download failed GHCup tried to download a tool, but the download failed with a subprocess exiting prematurely 0.1.19.0