deno: update update script to changed deno

pkgs/development/web/deno/update/common.ts

···
 }
 
 const decode = (buffer: Uint8Array) => new TextDecoder("utf-8").decode(buffer);
-const run = async (command: string, args: string[]) => {
-  const cmd = Deno.run(
-    { cmd: [command, ...args], stdout: "piped", stderr: "piped" },
-  );
+const decodeTrim = (b: Uint8Array) => decode(b).trimEnd();
+export const run = async (command: string, args: string[]) => {
+  const cmd = Deno.run({
+    cmd: [command, ...args],
+    stdout: "piped",
+    stderr: "piped",
+  });
   if (!(await cmd.status()).success) {
-    const error = await cmd.stderrOutput().then((b) => decode(b).trimEnd());
+    const error = await cmd.stderrOutput().then(decodeTrim);
     // Known error we can ignore
     if (error.includes("'allow-unsafe-native-code-during-evaluation'")) {
       // Extract the target sha256 out of the error
···
     }
     throw new Error(error);
   }
-  return cmd.output().then((b) => decode(b).trimEnd());
+  return cmd.output().then(decodeTrim);
 };
 
 // Exports
 export const versionRegExp = /\d+\.\d+\.\d+/;
-export const sha256RegExp = /[a-z0-9]{52}/;
-
-export async function commit(
-  name: string,
-  oldVer: string,
-  newVer: string,
-  files: string[],
-) {
-  await run("git", ["add", ...files]);
-  await run("git", ["commit", "-m", `${name}: ${oldVer} -> ${newVer}`]);
-}
+export const sha256RegExp = /[a-z0-9]{52}|sha256-.{44}/;
 
 export const getExistingVersion = async (filePath: string) =>
-  read(filePath).then((s) =>
-    s.match(genValueRegExp("version", versionRegExp))?.shift() || ""
+  read(filePath).then(
+    (s) => s.match(genValueRegExp("version", versionRegExp))?.shift() || "",
   );
 
 export const getLatestVersion = (owner: string, repo: string) =>
···
 
 export const logger = (name: string) =>
   (...a: any) => console.log(`[${name}]`, ...a);
-
-export const nixPrefetch = (args: string[]) => run("nix-prefetch", args);
-export const nixPrefetchURL = (args: string[]) => run("nix-prefetch-url", args);
 
 export const read = Deno.readTextFile;
 export const write = Deno.writeTextFile;

pkgs/development/web/deno/update/deps.ts

···
-import {
-  getExistingVersion,
-  genValueRegExp,
-  logger,
-  nixPrefetchURL,
-  versionRegExp,
-  write,
-} from "./common.ts";
-
-const log = logger("deps");
-
-export interface Architecture {
-  nix: string;
-  rust: string;
-}
-interface PrefetchResult {
-  arch: Architecture;
-  sha256: string;
-}
-
-const getRustyV8Version = async (
-  owner: string,
-  repo: string,
-  version: string,
-) =>
-  fetch(
-    `https://github.com/${owner}/${repo}/raw/${version}/core/Cargo.toml`,
-  )
-    .then((res) => res.text())
-    .then((txt) =>
-      txt.match(genValueRegExp("rusty_v8", versionRegExp))?.shift()
-    );
-
-const archShaTasks = (version: string, arches: Architecture[]) =>
-  arches.map(async (arch: Architecture): Promise<PrefetchResult> => {
-    log("Fetching:", arch.nix);
-    const sha256 = await nixPrefetchURL(
-      [`https://github.com/denoland/rusty_v8/releases/download/v${version}/librusty_v8_release_${arch.rust}.a`],
-    );
-    log("Done:    ", arch.nix);
-    return { arch, sha256 };
-  });
-
-const templateDeps = (version: string, deps: PrefetchResult[]) =>
-  `# auto-generated file -- DO NOT EDIT!
-{}:
-rec {
-  librusty_v8 = {
-    version = "${version}";
-    sha256s = {
-${deps.map((d) => `      ${d.arch.nix} = "${d.sha256}";`).join("\n")}
-    };
-  };
-}
-`;
-
-export async function updateDeps(
-  filePath: string,
-  owner: string,
-  repo: string,
-  denoVersion: string,
-  arches: Architecture[],
-) {
-  log("Starting deps update");
-  // 0.0.0
-  const version = await getRustyV8Version(owner, repo, denoVersion);
-  if (typeof version !== "string") {
-    throw "no librusty_v8 version";
-  }
-  log("librusty_v8 version:", version);
-  const existingVersion = await getExistingVersion(filePath);
-  if (version === existingVersion) {
-    log("Version already matches latest, skipping...");
-    return;
-  }
-  const archShaResults = await Promise.all(archShaTasks(version, arches));
-  await write(filePath, templateDeps(version, archShaResults));
-  log("Finished deps update");
-}

pkgs/development/web/deno/update/librusty_v8.ts

···
+import {
+  genValueRegExp,
+  getExistingVersion,
+  logger,
+  run,
+  versionRegExp,
+  write,
+} from "./common.ts";
+
+const log = logger("librusty_v8");
+
+export interface Architecture {
+  nix: string;
+  rust: string;
+}
+interface PrefetchResult {
+  arch: Architecture;
+  sha256: string;
+}
+
+const getLibrustyV8Version = async (
+  owner: string,
+  repo: string,
+  version: string,
+) =>
+  fetch(`https://github.com/${owner}/${repo}/raw/${version}/core/Cargo.toml`)
+    .then((res) => res.text())
+    .then((txt) =>
+      txt.match(genValueRegExp("rusty_v8", versionRegExp))?.shift()
+    );
+
+const fetchArchShaTasks = (version: string, arches: Architecture[]) =>
+  arches.map(
+    async (arch: Architecture): Promise<PrefetchResult> => {
+      log("Fetching:", arch.nix);
+      const sha256 = await run("nix-prefetch", [
+        `
+{ fetchurl }:
+fetchurl {
+  url = "https://github.com/denoland/rusty_v8/releases/download/v${version}/librusty_v8_release_${arch.rust}.a";
+}
+`,
+      ]);
+      log("Done:    ", arch.nix);
+      return { arch, sha256 };
+    },
+  );
+
+const templateDeps = (version: string, deps: PrefetchResult[]) =>
+  `# auto-generated file -- DO NOT EDIT!
+{ rust, stdenv, fetchurl }:
+
+let
+  arch = rust.toRustTarget stdenv.hostPlatform;
+  fetch_librusty_v8 = args: fetchurl {
+    name = "librusty_v8-\${args.version}";
+    url = "https://github.com/denoland/rusty_v8/releases/download/v\${args.version}/librusty_v8_release_\${arch}.a";
+    sha256 = args.shas.\${stdenv.hostPlatform.system};
+    meta = { inherit (args) version; };
+  };
+in
+fetch_librusty_v8 {
+  version = "${version}";
+  shas = {
+${deps.map(({ arch, sha256 }) => `    ${arch.nix} = "${sha256}";`).join("\n")}
+  };
+}
+`;
+
+export async function updateLibrustyV8(
+  filePath: string,
+  owner: string,
+  repo: string,
+  denoVersion: string,
+  arches: Architecture[],
+) {
+  log("Starting librusty_v8 update");
+  // 0.0.0
+  const version = await getLibrustyV8Version(owner, repo, denoVersion);
+  if (typeof version !== "string") {
+    throw "no librusty_v8 version";
+  }
+  log("librusty_v8 version:", version);
+  const existingVersion = await getExistingVersion(filePath);
+  if (version === existingVersion) {
+    log("Version already matches latest, skipping...");
+    return;
+  }
+  const archShaResults = await Promise.all(fetchArchShaTasks(version, arches));
+  await write(filePath, templateDeps(version, archShaResults));
+  log("Finished deps update");
+}

pkgs/development/web/deno/update/src.ts

···
 import {
   genValueRegExp,
   logger,
-  nixPrefetch,
   read,
+  run,
   sha256RegExp,
   versionRegExp,
   write,
···
 const log = logger("src");
 
 const prefetchSha256 = (nixpkgs: string, version: string) =>
-  nixPrefetch(["-f", nixpkgs, "deno.src", "--rev", version]);
+  run("nix-prefetch", ["-f", nixpkgs, "deno.src", "--rev", version]);
 const prefetchCargoSha256 = (nixpkgs: string) =>
-  nixPrefetch(
-    [`{ sha256 }: (import ${nixpkgs} {}).deno.cargoDeps.overrideAttrs (_: { outputHash = sha256; })`],
+  run(
+    "nix-prefetch",
+    [`{ sha256 }: (import ${nixpkgs} {}).deno.cargoDeps.overrideAttrs (_: { inherit sha256; })`],
   );
 
 const replace = (str: string, replacers: Replacer[]) =>
···
     [
       genVerReplacer("version", trimVersion),
       genShaReplacer("sha256", sha256),
-      genShaReplacer("cargoSha256", ""), // Empty ready for prefetchCargoSha256
     ],
   );
   log("Fetching cargoSha256 for:", sha256);

pkgs/development/web/deno/update/update.ts

···
 /*
 #!nix-shell -i "deno run --allow-net --allow-run --allow-read --allow-write" -p deno git nix-prefetch
 */
-import {
-  commit,
-  getExistingVersion,
-  getLatestVersion,
-  logger,
-} from "./common.ts";
-import { Architecture, updateDeps } from "./deps.ts";
+import { getExistingVersion, getLatestVersion, logger } from "./common.ts";
+import { Architecture, updateLibrustyV8 } from "./librusty_v8.ts";
 import { updateSrc } from "./src.ts";
 
 const log = logger("update");
···
 const repo = "deno";
 const denoDir = `${nixpkgs}/pkgs/development/web/${repo}`;
 const src = `${denoDir}/default.nix`;
-const deps = `${denoDir}/deps.nix`;
+const librusty_v8 = `${denoDir}/librusty_v8.nix`;
 const architectures: Architecture[] = [
   { nix: "x86_64-linux", rust: "x86_64-unknown-linux-gnu" },
   { nix: "aarch64-linux", rust: "aarch64-unknown-linux-gnu" },
···
 
 const tasks = [
   updateSrc(src, nixpkgs, version),
-  updateDeps(deps, owner, repo, version, architectures),
+  updateLibrustyV8(librusty_v8, owner, repo, version, architectures),
 ];
 await Promise.all(tasks);
 log("Updating deno complete");
-log("Commiting");
-await commit(repo, existingVersion, trimVersion, [src, deps]);
-log("Done");