Has the idea come up yet to support a trace intrinsic It wou Pants #development

Has the idea come up yet to support a trace intrin...

enough-analyst-54434

03/19/2021, 3:44 PM

Has the idea come up yet to support a trace intrinsic? It would be useful to be able to add something like this to a rule to debug:

Copy code

trace = await Get(Trace, Here())
print(f"At {here}")

And have a rendering of the stack of rules that are suspended waiting on the current (

Here()

) rule.

hundreds-father-404

03/19/2021, 4:56 PM

I don't think it has! I like that a lot! What do you mean rules that are suspended?

enough-analyst-54434

03/19/2021, 5:03 PM

The call stack. Most vivdly, for

await Get

calls you are literally suspended. For chaining rule input parameters its less vivid.

enough-analyst-54434

03/19/2021, 5:05 PM

There can be more than one stack of course, so there would need to be some choice. Maybe paramtrizable

Here(All)

Here(Any)

enough-analyst-54434

03/19/2021, 5:06 PM

Put another way or rendered anothe way - the subgraph of the rule graph waiting on me.

witty-crayon-22786

03/19/2021, 5:28 PM

we have that (for better or worse) in two forms: workunits and the Graph

witty-crayon-22786

03/19/2021, 5:29 PM

so yea, could do.

witty-crayon-22786

03/19/2021, 8:03 PM

also, in case you do this: i’m about 90% sure we’ll need to support non-

Get

await

usage at some point (i.e. for methods of the `Console`/`Workspace`), particularly for https://github.com/pantsbuild/pants/issues/10542

👍 1

witty-crayon-22786

03/19/2021, 8:05 PM

(in case that would allow for better syntax here)