#Imagine a I have a function called `cli`

1 messages · Page 1 of 1 (latest)

karmic stag
#

Here is a concrete example

    @function
    def run(self, cmd: str = "--version") -> dagger.Container:
        return (
            self.base().with_exec(["sh", "-c", f"python {cmd}"])
        )

I want to call run from the CLI but add a new directory before executing the command inside.

#

@slow sphinx yeah for sure we could, but the whole idea here is to create a simple proxy for a CLI as a starting point before implementing each command.

slow sphinx
#

What I do in this case is set self.container in the constructor and use that as the base.

karmic stag
#

I basically want to do something before with_exec via the CLI

karmic stag
slow sphinx
#

Once you chain core functions in the CLI you can't chain from your module since those functions don't know about your module.

karmic stag
#

Yeah exactly

#

So it seems like its not possible or am I missing somethign obvious again? 🙂

slow sphinx
#

You need to encode what you need in a function in your module

#

Not possible to have a custom function after a core function

karmic stag
#

got it -- it feels like if we wanted to create a simple "cli proxy" function then it would probably make more sense to return a container having the cli and do everything else with chaining -- so

dagger call run with-directory with-exec

#

Maybe a tiny bit more context will help, the goal is to create a "minimally useful module" that wraps an open source CLI.

self.base().with_exec(["sh", "-c", f"$CLI {cmd}"])

(replace $CLI with your favorite CLI)

something like this works perfect if you just have simple string args, but as soon as you need to do something more complex, like passing a file or directory then it becomes more challenging.

Yes, ideally we have a function that does the right thing, but for a CLI with dozens or hundreds of functions this means we would need to reimplement all of them and I am trying to think about the simplest possible solution.

hopefully the use case I am talking about makes sense.

candid patrol
karmic stag
#

Im not sure I follow @candid patrol - can you give me an example of what you mean?