Clean up node path prepending (#7057)

* Delete unused scriptsPrependNodePath config option.

#6382 (e905f74) made this option obsolete.

* Do not prepend the node exec path.

#6382 (e905f74) made this unnecessary.

* Update CHANGELOG.md

* Clarify in changelog the --scripts-prepend-node-path is removed because it is obsolete

The current behavior after this PR is not to make `--scripts-prepend-node-path` always on, but to have a better default behavior than the option provided.

CHANGELOG.md

@@ -4,6 +4,10 @@ Please add one entry in this file for each change in Yarn's behavior. Use the sa
 
 ## Master
 
+- Removes `--scripts-prepend-node-path` as Yarn's default behavior makes this obsolete
+
+  [#7057](https://github.com/yarnpkg/yarn/pull/7057/files) - [**Jason Grout**](https://github.com/jasongrout)
+
 - Fixes the advisory link printed by `yarn audit`
 
   [#7091](https://github.com/yarnpkg/yarn/pull/7091) - [**Jakob Krigovsky**](https://github.com/sonicdoe)

src/config.js

@@ -50,7 +50,6 @@ export type ConfigOptions = {
   nonInteractive?: boolean,
   enablePnp?: boolean,
   disablePnp?: boolean,
-  scriptsPrependNodePath?: boolean,
   offlineCacheFolder?: string,
 
   enableDefaultRc?: boolean,
@@ -177,8 +176,6 @@ export default class Config {
   plugnplayUnplugged: Array<string>;
   plugnplayPurgeUnpluggedPackages: boolean;
 
-  scriptsPrependNodePath: boolean;
-
   workspacesEnabled: boolean;
   workspacesNohoistEnabled: boolean;
 
@@ -484,8 +481,6 @@ export default class Config {
     // $FlowFixMe$
     this.nonInteractive = !!opts.nonInteractive || isCi || !process.stdout.isTTY;
 
-    this.scriptsPrependNodePath = !!opts.scriptsPrependNodePath;
-
     this.requestManager.setOptions({
       offline: !!opts.offline && !opts.preferOffline,
       captureHar: !!opts.captureHar,

src/util/execute-lifecycle-script.js

@@ -164,13 +164,6 @@ export async function makeEnv(
   const envPath = env[constants.ENV_PATH_KEY];
   const pathParts = envPath ? envPath.split(path.delimiter) : [];
 
-  // Include the directory that contains node so that we can guarantee that the scripts
-  // will always run with the exact same Node release than the one use to run Yarn
-  const execBin = path.dirname(process.execPath);
-  if (pathParts.indexOf(execBin) === -1) {
-    pathParts.unshift(execBin);
-  }
-
   // Include node-gyp version that was bundled with the current Node.js version,
   // if available.
   pathParts.unshift(path.join(path.dirname(process.execPath), 'node_modules', 'npm', 'bin', 'node-gyp-bin'));