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VSCode Haskutil

'QuickFix' actions for Haskell editor

Requirements

This extension uses diagnostics (errors and warnings) from PROBLEMS tab which is populated by other Haskell extensions such as Simple GHC, Haskero, ghcid or ghcide. Please install one of them along with this extension.

Features

• Add missing import
• Organize imports
• Remove unused imports
• Add missing LANGUAGE extension
• Organize LANGUAGE extensions
• Add top-level signature
• Fill typed hole

Individual features can be turned on and off via haskutil.feature.[feature] flags

Add missing import

Uses Hoogle to search for matching modules. Configurable via hoogle-vscode extension configuration (can be configured to use local instance of hoogle for example).

Organize imports

Sorting and alignment are configurable via haskutil.sortImports and haskutil.alignImports respectively. Imports can also be organized on file save with haskutil.organiseImportsOnSave: true (dafault is false).

Remove unused imports

Removes unused imports identified by warnings. haskutil.alignImports controls if remaning imports are also aligned.

Add missing LANGUAGE extension

Adds LANGUAGE pragma suggested by error. List of supported pragmas is defined by haskutil.supportedExtensions.

Organize LANGUAGE extensions

Splitting, sorting and alignment of extensions are configurable via haskutil.splitExtensions, haskutil.sortExtensions and haskutil.alignExtensions respectively. Extensions can also be organized on file save with haskutil.organiseExtensionOnSave: true (dafault is false).

Add top-level signature

Adds signature suggested by warning.

Fill typed hole

Replaces typed hole with one of the valid hole fits from the warning.
Similarly replaces type wildcard with inferred type.

Dependencies

• Automatic dependency (auto install) hoogle-vscode