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introduce expander (#4974)

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* introduce expander

* unify towards expand

* bubble up expand

* spelling

Co-authored-by: Andrei Sandu <54316454+sandreim@users.noreply.github.com>

* add newlines

Co-authored-by: Andrei Sandu <54316454+sandreim@users.noreply.github.com>
This commit is contained in:
Bernhard Schuster
2022-02-23 15:24:26 +01:00
committed by GitHub
parent 8aff3cb81b
commit d4176874a1
7 changed files with 54 additions and 37 deletions
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polkadot/node/overseer/overseer-gen/README.md
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@@ -76,3 +76,12 @@ subsystems must be initialized only once (another compile time check) or be _rep
a special setter like method `replace_<subsystem>`.
A task spawner and subsystem context are required to be defined with `SpawnNamed` and respectively `SubsystemContext` implemented.
## Debugging
As always, debugging is notoriously annoying with bugged proc-macros.
Therefore [`expander`](https://github.com/drahnr/expander) is employed to yield better
error messages. Enable with `--feature=polkadot-overseer-gen/expand` or
`--feature=polkadot-overseer/expand` from the root of the project or
make `"expand"` part of the default feature set.