oh-my-posh/website/docs/segments/haskell.mdx
Jan De Dobbeleer 3057e474d7 docs: tables for data
this look a lot better
2022-09-16 16:35:44 +02:00

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---
id: haskell
title: Haskell
sidebar_label: Haskell
---
## What
Display the currently active Glasgow Haskell Compiler (GHC) version.
## Sample Configuration
```json
{
"type": "haskell",
"style": "powerline",
"powerline_symbol": "\uE0B0",
"foreground": "#906cff",
"background": "#100e23",
"template": " \ue61f {{ .Full }}"
}
```
## Properties
| Name | Type | Description |
| ---------------------- | --------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `home_enabled` | `boolean` | display the segment in the HOME folder or not - defaults to `false` |
| `fetch_version` | `boolean` | display the GHC version - defaults to `true` |
| `missing_command_text` | `string` | text to display when the command is missing - defaults to empty |
| `display_mode` | `string` | <ul><li>`always`: the segment is always displayed</li><li>`files`: the segment is only displayed when `*.hs`, `*.lhs`, `stack.yaml`, `package.yaml`, `*.cabal`, or `cabal.project` files are present (**default**)</li></ul> |
| `version_url_template` | `string` | a go [text/template][go-text-template] [template][templates] that creates the URL of the version info / release notes |
| `stack_ghc_mode` | `string` | determines when to use `stack ghc` to retrieve the version information. Using `stack ghc` will decrease performance.<ul><li>`never`: never use `stack ghc` (**default**)</li><li>`package`: only use `stack ghc` when `stack.yaml` is in the root of the </li><li>`always`: always use `stack ghc`</li></ul> |
## Template ([info][templates])
:::note default template
```template
{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}
```
:::
### Properties
| Name | Type | Description |
| ----------- | --------- | -------------------------------------------------- |
| `.Full` | `string` | the full version |
| `.Major` | `string` | major number |
| `.Minor` | `string` | minor number |
| `.Patch` | `string` | patch number |
| `.URL` | `string` | URL of the version info / release notes |
| `.Error` | `string` | error encountered when fetching the version string |
| `.StackGhc` | `boolean` | `true` if `stack ghc` was used, otherwise `false` |
[go-text-template]: https://golang.org/pkg/text/template/
[templates]: /docs/configuration/templates