do not overwrite process.env and Linux-only fix

Author: Ptival

lib/worker/lib/workerLib.ts

@@ -231,7 +231,10 @@ export class Parent extends RequesterResponder {
     /** start worker */
     startWorker(childJsPath: string, terminalError: (e: Error) => any, customArguments: string[]) {
         try {
-            var spawnEnv = process.env;
+            /** At least on NixOS, the environment must be preserved for
+                dynamic libraries to be properly linked.
+                On Windows/MacOS, it needs to be cleared, cf. atom/atom#2887 */
+            var spawnEnv = (process.platform === 'linux') ? Object.create(process.env) : {};
             spawnEnv['ATOM_SHELL_INTERNAL_RUN_AS_NODE'] = '1';
             this.child = spawn(this.node, [
             // '--debug', // Uncomment if you want to debug the child process