diff -u -r ../node-v6.3.1/src/node_main.cc ./src/node_main.cc
--- ../node-v6.3.1/src/node_main.cc	2016-07-21 16:44:43.000000000 -0400
+++ ./src/node_main.cc	2016-07-23 13:53:57.530095071 -0400
@@ -54,6 +54,10 @@
   // calls elsewhere in the program (e.g., any logging from V8.)
   setvbuf(stdout, nullptr, _IONBF, 0);
   setvbuf(stderr, nullptr, _IONBF, 0);
+  if (getenv("TMPDIR") == NULL) {
+    // Give javascript programs (such as updated versions of npm) a working tmpdir.
+    putenv("TMPDIR=@TERMUX_PREFIX@/tmp");
+  }
   return node::Start(argc, argv);
 }
 #endif