diff --git a/node_modules/qqjs/lib/exec.js b/node_modules/qqjs/lib/exec.js
index 835f565..84bb5be 100644
--- a/node_modules/qqjs/lib/exec.js
+++ b/node_modules/qqjs/lib/exec.js
@@ -5,6 +5,11 @@ const m = {
     m: {},
     get execa() { return this.m.execa = this.m.execa || require('execa'); },
 };
+const { isCygwin, isMinGW, isMSYS2 } = require('execa');
+exports.isCygwin = isCygwin;
+exports.isMinGW = isMinGW;
+exports.isMSYS2 = isMSYS2;
+console.log(`qqjs exec.js MSYSTEM=${process.env.MSYSTEM} OSTYPE=${process.env.OSTYPE} isMSYS2=${isMSYS2} isMingGW=${isMinGW} isCygwin=${isCygwin}`);
 /**
  * easy access to process.env
  */