code: function findSolutionFile () {
      glob('build/*.sln', function (err, files) {
        if (err) return callback(err)
        if (files.length === 0) {
          return callback(new Error('Could not find *.sln file. Did you run "configure"?'))
        }
        guessedSolution = files[0]
        log.verbose('found first Solution file', guessedSolution)
        doWhich()
      })
    }
docs: On Windows, find the first build/*.sln file.