Skip to main content



Display the currently active Glasgow Haskell Compiler (GHC) version.

Sample Configuration#

"type": "haskell",
"style": "powerline",
"powerline_symbol": "\uE0B0",
"foreground": "#906cff",
"background": "#100e23",
"template": " \ue61f {{ .Full }}"


  • 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 - determines when the segment is displayed
    • always: the segment is always displayed
    • files: the segment is only displayed when *.hs, *.lhs, stack.yaml, package.yaml, *.cabal, or cabal.project files are present (default)
  • version_url_template: string - a go text/template template 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.
    • never: never use stack ghc (default)
    • package: only use stack ghc when stack.yaml is in the root of the package
    • always: always use stack ghc

Template (info)#

default template
{{ if .Error }}{{ .Error }}{{ else }}{{ .Full }}{{ end }}


  • .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