Structure

[emil14]

You can run and build program like this:

neva build path/to/main # build executable
neva run path/to/main # run in interpreter

By default if you didn't provide path argument current directory is used. So running neva run is the same as neva run . or neva run ./. Same goes for neva build.

You pass path to package, not file. Package is a directory that

1. Contains *.neva files
2. Exist inside neva space (file tree with space.yml at the root)

There's 2 kind of packages: library package and executable package. Difference is that

• library: must contain at least 1 pub entity and must not contain main component
• executable: must contain main component and must not contain pub entities

Executable packages usually located in cmd directory like this

cmd/
  bot/
  cli/
  server/

main component in executable package must have (implement) specific interface that is

(sig any) -> ()

I.e one sig inport of any type with no outports. Note that normally we would use generic <T>(sig T) but main component, being root node of the program's network that is triggered by runtime, have no outports and no logic must depend on sig's type.

(Please note #225 where we talk about this interface. It might be changed)

[emil14]

I don't think we need this discussion