ensure main.go is updated with schema changes during ftl dev

[worstell]

it seemed like the build dir main.go wasn't updating on redeploys until quitting and rerunning with ftl dev --recreate. we need to recompile this file whenever we rebuild the schema because it generates based on schema information now

[wesbillman]

@safeer I assigned this one to you since it's in the same area as the code you're looking at to delete the DeployDir during the build phase.

[alecthomas]

Delete the DeployDir or the build dir? If it's the former, @gak implemented garbage collection of it yesterday. But the latter makes sense.

[safeer]

@alecthomas is the generated _ftl directory the DeployDir or the build directory? I have a PR up, but I was mistakenly under the impression they were the same 🙃

[alecthomas]

I was thinking of DeploymentDir, but I think a completely separate concept is cunningly called DeployDir in the context of the build system 😂 - so DeployDir is correct yep, I was just clarifying.

[safeer]

Fixed by #1500; verified that main.go is updated now on schema changes.