Consider excluding virtual fields when inspecting

[fishtreesugar]

For example, without excluding virtual fields:

defmodule TestWorkflow do
  use Pacer.Workflow

  graph do
    field :foo, virtual?: true
    field :bar, dependencies: ~w[foo]a, resolver: &__MODULE__.add1/1, default: nil
  end

  def add1(%{foo: foo}), do: foo + 1
end

Because field :foo is missing in the struct, so the inspect result looks like a map:
inspect(Pacer.Workflow.execute(%TestWorkflow{foo: 1})) => %{__struct__: TestWorkflow, bar: 2}

When exclude virtual fields manually:

defmodule TestWorkflow do
  use Pacer.Workflow
  @derive {Inspect, except: [:foo]}

  graph do
    field :foo, virtual?: true
    field :bar, dependencies: ~w[foo]a, resolver: &__MODULE__.add1/1, default: nil
  end

  def add1(%{foo: foo}), do: foo + 1
end

The inspect result is same as struct with excluded fields:
inspect(Pacer.Workflow.execute(%TestWorkflow{foo: 1})) => #TestWorkflow<bar: 2, ...>

[stelane]

@fishtreesugar Thanks for bringing this up! We have this on our backlog!