don't write lock file until snapshot is complete to avoid inconsistency between sources and lock file
collect errors while getting sources for multiple packages, output all errors at the end
remove unused
fetch repository URLs from packrat.lock
bugfix
also fetch sources for dependencies

regression introduced in 6e1790fd9d934f
refactor: extract variable appPackagesFlat
Merge branch 'travis' into bootstrap
need sourcePath
Merge pull request #45 from krlmlr/bootstrap

Streamline bootstrapping