How to combine named recipe arguments with variadic arguments?

[alshdavid]

I'd like to have named arguments on recipes that fall back to a default value with the last argument being a variadic argument - like this:

just run ./fixture/test-fixture
> cargo run -- ./fixture/test-fixture

just run target=release ./fixture/test-fixture
> cargo run --target  release -- ./fixture/test-fixture

However I cannot find an approach for this in the docs. The closest I have come was to use arguments with conditional expressions - however the variadic argument supersedes the recipe argument.

profile := "dev"

build:
  cargo build --profile {{profile}}

run *ARGS:
  cargo run --profile {{profile}} -- {{ARGS}}

But that results in

just run ./fixture/test-fixture
> cargo run  --profile dev -- profile=dev ./fixture/test-fixture

just run target=release ./fixture/test-fixture
> cargo run --profile dev -- profile=release

EDIT:

Env Vars

I can use environment variables:

profile := env_var_or_default("profile", "dev")

build:
  cargo build --profile {{profile}}

run *ARGS:
  cargo run --profile {{profile}} -- {{ARGS}}

just run 
> cargo run --

profile=release just run
> cargo run --profile release

but I'd like to be able to list them as part of just -l so they are discoverable and autocompletion could work, however env vars don't work

just -l
> Available recipes:
>    build
>    run *ARGS

Suggestion

Ideally I'd be able to use optional named recipie arguments along with variadic arguments so they can be listed with just -l and ignored if omitted.

This isn't valid just config but like this:

build #profile="dev":
  cargo build --profile {{profile}}

build #profile="dev" *args:
  cargo build --profile {{profile}}

Where I could invoke it with

just run hello-world
> cargo run --profile dev -- hello-world

just run profile=release hello-world
> cargo run --profile release -- hello-world

just -l
> Available recipes:
>    build #profile="dev"
>    run #profile="dev" *ARGS

[alshdavid]

Moving to an issue