Precompilation fails on `@agent`

[zenna]

Describe the bug
Precompilation fails on simple examples which uses @agent Zombie OSMAgent

Minimal Working Example

1. Generate a new package TestAgents
2. Replace TestAgents.jl with:

module TestAgents

using Agents
@agent Zombie OSMAgent begin
  infected::Bool
end

end # module

Then try using TestAgents

Agents.jl version
Agents v4.0.4
Julia 1.5.3

[Libbum]

Hmm. I can't reproduce this. Can you send me ] st and ] st -m?

[Libbum]

OK, I've taken another look and managed to get it to fail. Will take a look at the issue soon.

[Libbum]

The problem lies with this eval call. I tried to make the call global in this branch, but the issue still occurs. Will check with some of the more competent metaprogramming people to see if there's a solution to this problem.

For the moment you can move ahead with your project by using the full struct which the macro would build for you here:

mutable struct Zombie <: AbstractAgent
      id::Int64
      pos::Tuple{Int64,Int64,Float64}
      route::Array{Int64,1}
      destination::Tuple{Int64,Int64,Float64}
      infected::Bool
end

[trevorgrif]

Bug still exist on v5.4.3.

[Tortar]

I managed to get it to fail in 5.4.3 as @trevorgrif reported, but not on 5.14.0, the agent macro has been rewritten somewhat between this two versions and the modifications apparently solved the problem. So I think it's safe to close the issue now