add dioxus fmt

README.md

@@ -129,7 +129,7 @@ This flake exposes a [flake-parts](https://flake.parts/) module as well. To use
 
     For an example, see [haskell-template](https://github.com/srid/haskell-template)'s `flake.nix`.
 
-See [this page](https://zero-to-flakes.com/treefmt-nix) for a detailed walkthrough.
+See [this page](https://haskell.flake.page/treefmt) for details.
 
 ## Configuration
 While dealing with `treefmt` outside of `nix`, the formatter configuration is specified in a `toml` format. On the contrary, with `nix`, you write in with a nix syntax like this:
@@ -180,6 +180,7 @@ This repo contains a top-level `default.nix` that returns the library helper fun
 * deadnix
 * deno
 * dhall
+* dioxus
 * dprint
 * elm-format
 * erlfmt

examples/formatter-dioxus.toml

@@ -0,0 +1,6 @@
+# Example generated by ../examples.sh
+[formatter.dioxus-cli]
+command = "dioxus-fmt"
+excludes = []
+includes = ["*.rs"]
+options = []

programs/dioxus.nix

@@ -0,0 +1,27 @@
+{ lib, pkgs, config, ... }:
+let
+  cfg = config.programs.dioxus;
+in
+{
+  options.programs.dioxus = {
+    enable = lib.mkEnableOption "dioxus";
+    package = lib.mkPackageOption pkgs "dioxus-cli" { };
+  };
+
+  config = lib.mkIf cfg.enable {
+    settings.formatter.dioxus = {
+      command = pkgs.writeShellApplication {
+        name = "dioxus-fmt";
+        runtimeInputs = [
+          cfg.package
+        ];
+        text = ''
+          for file in "$@"; do
+            dx fmt -f "$file"
+          done
+        '';
+      };
+      includes = [ "*.rs" ];
+    };
+  };
+}