I just published a new version (0.1.3) that makes it easier to deal with 
mulitple results callback. You don't need to write a wrapper any more; you 
just get the resutls as an array. So your example becomes:

var galaxy = require('galaxy');
var fs = galaxy.star(require('fs'));

var get = galaxy.star(require('request').get);

function* main() {
    var contents = yield fs.readFile('idList.json', 'utf8');
    yield contents.split('\n').forEachStar(function*(id) {
        var result = yield get('http://www.example.com?id='+id);
        console.log("body=" + result[1]);
    });
};

galaxy.unstar(main)(function(err, result) {
    if (err) throw err;
    console.log('done');
});




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