Unlazy collections/delegates

[lkoe]

#1194 unlazy collections/delegates

[nedtwigg]

Ah, shoot. I misunderstood your comments in the issue, I thought you were missing the commits I made to handle collections, but in fact I was missing your point about this premature instanceof check. But now we expose another problem, visible in the test failures for predeclare blocks, which is that

EDIT: Explanation below turned out to be wrong

• we unlazy as soon as a value is set
• which means that we are "unlazying" intermediate values
• which is slow for all builds, but creates a correctness problem for "predeclare" blocks because intermediate values might have un-predeclared versions which the user shouldn't have to fuss with

I'll need to think a bit for how we can fix this...

[nedtwigg]

Oh good! It wasn't so bad. The issue was as simple as:

• the predeclare task doesn't use the cache, thus it is running after the "unlazy" calls
• so all we needed to do was make the predeclare task call unlazy on itself