desktop-file-validate: init

Add support for `desktop-file-validate` from `desktop-file-utils`,
which checks `.desktop` files for XDG Desktop Entry compliance.

Author: a-kenji

README.md

@@ -246,6 +246,7 @@ functions.
 * [dart-format](programs/dart-format.nix)
 * [deadnix](programs/deadnix.nix)
 * [deno](programs/deno.nix)
+* [desktop-file-validate](programs/desktop-file-validate.nix)
 * [detekt](programs/detekt.nix)
 * [dfmt](programs/dfmt.nix)
 * [dhall](programs/dhall.nix)

examples/formatter-desktop-file-validate.toml

@@ -0,0 +1,6 @@
+# Example generated by ../examples.sh
+[formatter.desktop-file-validate]
+command = "desktop-file-validate"
+excludes = []
+includes = ["*.desktop"]
+options = []

programs/desktop-file-validate.nix

@@ -0,0 +1,13 @@
+{ mkFormatterModule, ... }:
+{
+  meta.maintainers = [ "a-kenji" ];
+
+  imports = [
+    (mkFormatterModule {
+      name = "desktop-file-validate";
+      package = "desktop-file-utils";
+      mainProgram = "desktop-file-validate";
+      includes = [ "*.desktop" ];
+    })
+  ];
+}