workaround for tmux 2 bug

node_modules/vfs-local/localfs.js

@@ -1926,10 +1926,18 @@ module.exports = function setup(fsOptions) {
             
             function run(err){
                 if (err) return callback(err);
+                _setDefaultEnv(options);
+                delete options.env.TMUX;
+                
+                // HACK: workaround for tmux 2.2 bug: 
+                // tmux passes PATH to new sessions breaking rvm
+                var sep = isWin ? ";" : ":";
+                options.env.PATH = options.env.PATH.split(sep).filter(function(p) {
+                    return !/\/rvm\//.test(p);
+                }).join(sep);
+                // ENDHACK
                 
                 if (options.detach && options.output) {
-                    _setDefaultEnv(options);
-                    delete options.env.TMUX;
                     
                     return _execFile(TMUX, args, {
                         args: args,