Add input manifest-file (#454)

Adds capability to maintain custom uv builds or to override the default
sources

src/utils/octokit.ts

@@ -8,7 +8,7 @@ import {
   type PaginateInterface,
 } from "@octokit/plugin-paginate-rest";
 import { legacyRestEndpointMethods } from "@octokit/plugin-rest-endpoint-methods";
-import { fetch as undiciFetch, ProxyAgent, type RequestInit } from "undici";
+import { fetch as customFetch } from "./fetch";
 
 export type { RestEndpointMethodTypes } from "@octokit/plugin-rest-endpoint-methods";
 
@@ -17,26 +17,6 @@ const DEFAULTS = {
   userAgent: "setup-uv",
 };
 
-export function getProxyAgent() {
-  const httpProxy = process.env.HTTP_PROXY || process.env.http_prox;
-  if (httpProxy) {
-    return new ProxyAgent(httpProxy);
-  }
-
-  const httpsProxy = process.env.HTTPS_PROXY || process.env.https_proxy;
-  if (httpsProxy) {
-    return new ProxyAgent(httpsProxy);
-  }
-
-  return undefined;
-}
-
-export const customFetch = async (url: string, opts: RequestInit) =>
-  await undiciFetch(url, {
-    dispatcher: getProxyAgent(),
-    ...opts,
-  });
-
 export const Octokit: typeof Core &
   Constructor<
     {