Re: [BuildStream] Preserving artifacts out of workspaces

[William Salmon <will salmon codethink co uk>]

> I have tried to recreate what you described in 
> https://gitlab.com/BuildStream/buildstream/commit/dab4489569652d8b37ff57b05f1f1e34059114f5
I have created a more interesting example that creates intermediate 
files out of the source directory. If a workspace is used then the 
intermediate files seem to be reused.

https://gitlab.com/BuildStream/buildstream/commit/cbb8c2dc2c4f7bf4c5444243ca51bbc80b5bcee1

I hope this example is very close to the use case described, but using 
Tristan's suggested approach and can form the basis for a good tutorial.