Set Deno.execPath() inside Windows PATH so that deno task can find deno

Author: cderv

src/webui/quarto-preview/build.ts

@@ -1,3 +1,5 @@
+import { dirname } from "node:path";
+
 // ensure this is treated as a module
 export {};
 
@@ -20,6 +22,13 @@ const run = async (args: string[], quiet = true) => {
   console.log(`Running: ${Deno.execPath()} ${args.join(" ")}`);
   const command = new Deno.Command(Deno.execPath(), {
     args,
+    env: Deno.build.os === "windows"
+      ? {
+        PATH: `${dirname(Deno.execPath())}${
+          Deno.env.get("PATH") ? `;${Deno.env.get("PATH")}` : ""
+        }`,
+      }
+      : undefined,
   });
   const output = await command.output();
   if (output.success || quiet) {