The Molinillo library is a good library for systems that need a
constraint solver that will solve dependency problems requiring a single
version of each named dependency.
In our case, the eventual goal is to allow libraries to have conflicting
transitive dependencies at runtime. Isolation will be provided by
restricting all calls within a given profile to scope which can only see
that profile's dependencies.
To facilitate working on the isolation feature, I've replaced the
Molinillo-based resolver with a minimal resolver which will allow us to
load multiple versions of the same library.
Since we will likely want a good amount of logging around this feature
in the future, I've added a Inspec::Log singleton-style class, replacing
the previous Inpsec::Log which appeared unused in the code base.
Signed-off-by: Steven Danna <steve@chef.io>
Developers use the github repo to get full access to the development of this gem. The fixed (non git-ls-files) approach to packaging files has led to a 30mb gem recently, this will prevent that from happening again.
This commit is the foundation of the dependency resolution as described in https://github.com/chef/inspec/issues/888 .
It currently only works with local dependencies, as seen in the example inheritance profile.
Tests and full resolution are coming next on the path to an MVP implementation.
Currently, #readable?, #writeable?, and #executable? will incorrectly
return true if the file does not exist.
In addition, I took the opportunity to refactor the File resource to
make it easier to write unit tests and supplied a full unit test
suite for this resource.
