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Rule graph question :thread: about input Params..

I’ve come across this a few times now, and think it would be nice if it would work, but it seems like it doesn’t (or I’m doing it wrong).
Example scenario:

```rule_a(T1, T2) -&gt; T3
rule_b(T1) -&gt; T2
rule_x() :: Get(T3, T1)```
That is, I would like the engine to use `T1` to use `rule_b` to get the `T2` param for `rule_a`.

This seems to work though, but requires another level of indirection:
```rule_a(T1) -&gt; T2
rule_b(T2, T3) -&gt; T4
rule_c(T1) -&gt; T3
rule_x() :: Get(T4, T1)```
(This is the pattern for Process -&gt; ProcessResult btw)

Here, the engine seems to be aware of `T1` in order to use `rule_c` to get the `T3` for `rule_b`.

ah, yea… this is unfortunately a restriction that i needed to put in place to make solve time manageable last time i was refactoring that code:  <https://github.com/pantsbuild/pants/blob/main/src/rust/engine/rule_graph/README.md#constraints> … the `param_consumption` one in particular.

my hope is that <https://github.com/pantsbuild/pants/issues/11269> will allow us to remove that one