63 lines
1.7 KiB
Nix
63 lines
1.7 KiB
Nix
{ pkgs, config, lib, ... }:
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with lib;
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let
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cfg = config.programs.vscode.haskell;
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defaultHieNixExe = hie-nix.hies + "/bin/hie-wrapper";
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defaultHieNixExeText =
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literalExpression ''"''${pkgs.hie-nix.hies}/bin/hie-wrapper"'';
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hie-nix = pkgs.hie-nix or (abort ''
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vscode.haskell: pkgs.hie-nix missing. Please add an overlay such as:
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${exampleOverlay}
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'');
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exampleOverlay = ''
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nixpkgs.overlays = [
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(self: super: { hie-nix = import ~/src/hie-nix {}; })
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]
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'';
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in {
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options.programs.vscode.haskell = {
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enable = mkEnableOption "Haskell integration for Visual Studio Code";
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hie.enable = mkOption {
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type = types.bool;
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default = true;
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description = "Whether to enable Haskell IDE engine integration.";
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};
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hie.executablePath = mkOption {
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type = types.path;
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default = defaultHieNixExe;
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defaultText = defaultHieNixExeText;
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description = ''
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The path to the Haskell IDE Engine executable.
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</para><para>
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Because hie-nix is not packaged in Nixpkgs, you need to add it as an
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overlay or set this option. Example overlay configuration:
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<programlisting language="nix">${exampleOverlay}</programlisting>
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'';
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example = literalExpression ''
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(import ~/src/haskell-ide-engine {}).hies + "/bin/hie-wrapper";
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'';
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};
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};
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config = mkIf cfg.enable {
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programs.vscode.userSettings = mkIf cfg.hie.enable {
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"languageServerHaskell.enableHIE" = true;
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"languageServerHaskell.hieExecutablePath" = cfg.hie.executablePath;
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};
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programs.vscode.extensions =
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[ pkgs.vscode-extensions.justusadam.language-haskell ]
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++ lib.optional cfg.hie.enable
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pkgs.vscode-extensions.alanz.vscode-hie-server;
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};
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}
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