How to enable isort for Python?

[aspizu]

isort is a formatter for import statements

[Ordoviz]

Installing pyls-isort should work, but I didn't test.

[aspizu]

im not using pylsp, im using pyright

[kirawi]

pyright doesn't support isort
You can, however, override formatting via an external formatter: https://github.com/helix-editor/helix/wiki/External-binary-formatter-configuration

[aspizu]

i alrady have setup black
how to add another formatter?

[gabydd]

You could make a script that calls both black and isort and

[kirawi]

https://pycqa.github.io/isort/docs/configuration/black_compatibility.html

[CobaltCause]

If you use pyright and want to use black and isort together, I found that this works well:

[[language]]
name = "python"
auto-format = true
formatter = { command = "sh", args = ["-c", "black --quiet - | isort -"]}

Edit: here's one that also works with ruff and will only run commands that are actually available:

[[language]]
name = "python"
auto-format = true

[language.formatter]
command = "bash"
args = [
    "-c",
    """
    set -eou pipefail

    COMMAND="cat"

    if command -v black &> /dev/null; then
        COMMAND+=" | black --quiet -"
    fi

    if command -v isort &> /dev/null; then
        COMMAND+=" | isort -"
    fi

    if command -v ruff &> /dev/null; then
        COMMAND+=" | ruff check --select I --fix -"
    fi

    echo "$COMMAND" >&2

    eval "$COMMAND"
    """,
]

[Rhylan2333]

Here is my configuration with ruff and isort working😄:

[[language]]
name = "python"
# …
formatter = { command = "zsh", args = ["-c", """
  ruff format --stdin-filename python | isort -d -
  """] }

[Pierre-Thibault]

I removed the isort dependency to use only ruff:

[[language]]
name = "python"
# …
formatter = { command = "zsh", args = ["-c", """
  ruff check --select I --fix - | ruff format -
  """] }