retext: add module

modules/programs/retext.nix

@@ -0,0 +1,53 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  inherit (lib)
+    mkIf
+    mkEnableOption
+    mkPackageOption
+    mkOption
+    ;
+
+  cfg = config.programs.retext;
+  iniFormat = pkgs.formats.ini { };
+in
+{
+  meta.maintainers = with lib.hm.maintainers; [ aguirre-matteo ];
+  options.programs.retext = {
+    enable = mkEnableOption "retext";
+    package = mkPackageOption pkgs "retext" { nullable = true; };
+    settings = mkOption {
+      inherit (iniFormat) type;
+      default = { };
+      example = {
+        General = {
+          documentStatsEnabled = true;
+          lineNumbersEnabled = true;
+          relativeLineNumbers = true;
+          useWebEngine = true;
+        };
+
+        ColorScheme = {
+          htmlTags = "green";
+          htmlSymbols = "#ff8800";
+          htmlComments = "#abc";
+        };
+      };
+      description = ''
+        Configuration settings for retext. All the available options can be found
+        here: <https://github.com/retext-project/retext/blob/master/configuration.md>.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = mkIf (cfg.package != null) [ cfg.package ];
+    xdg.configFile."ReText Project/ReText.conf" = mkIf (cfg.settings != { }) {
+      source = iniFormat.generate "ReText.conf" cfg.settings;
+    };
+  };
+}