fixup

Author: aduh95

README.md

@@ -306,6 +306,7 @@ same major line. Should you need to upgrade to a new major, use an explicit
 
 - `COREPACK_ENV_FILE` can be set to `0` to request Corepack to not attempt to
   load `.corepack.env`; it can be set to a path to specify a different env file.
+  Only keys that starts with `COREPACK_` will be taken into account.
   For Node.js 18.x users, this setting has no effect as that version doesn't
   support parsing of `.env` files.
 

sources/specUtils.ts

@@ -192,7 +192,10 @@ export async function loadSpec(initialCwd: string): Promise<LoadSpecResult> {
     } else {
       debugUtils.log(`Checking ${envFilePath}`);
       try {
-        localEnv = {...parseEnv(await fs.promises.readFile(envFilePath, `utf8`)), ...process.env};
+        localEnv = {
+          ...Object.fromEntries(Object.entries(parseEnv(await fs.promises.readFile(envFilePath, `utf8`))).filter(e => e[0].startsWith(`COREPACK_`))),
+          ...process.env,
+        };
         debugUtils.log(`Successfully loaded env file found at ${envFilePath}`);
       } catch (err) {
         if ((err as NodeError)?.code !== `ENOENT`)