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nix-flake-base/languages/nix/default.nix

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Nix

# SPDX-FileCopyrightText: 2025 Ethan Reece <contact@ethanreece.com>
#
# SPDX-License-Identifier: LGPL-3.0-or-later
{ module-name, ... }:
{ flake-parts-lib, lib, ... }:
{
options.perSystem = flake-parts-lib.mkPerSystemOption (
{ config, pkgs, ... }:
{
options.languages.${module-name}.enable = lib.mkEnableOption "Nix";
config = lib.mkIf config.languages.${module-name}.enable {
editors.helix.languages = {
language = [
{
name = "nix";
language-servers =
[ "nil" ]
++ (lib.optionals config.languages.en-us.enable [
"harper-ls"
"typos"
]);
formatter = {
command = "${config.treefmt.build.wrapper}/bin/treefmt";
args = [
"--stdin"
"%{buffer_name}"
"--quiet"
];
};
auto-format = true;
}
];
language-server.nil.command = "${pkgs.nil}/bin/nil";
};
treefmt.programs.nixfmt = {
enable = true;
strict = true;
};
};
}
);
}