Setting to configure own sections of the configuration file

[iilyak]

I found it very useful to put arbitrary configuration into mise.toml. For example I am installing a bunch of packages using coursier (a scala package manager) and rebar (an erlang package manager). Here is how I abuse mise.toml to specify which things to install.

[coursier.scalafmt]
id = 'org.scalameta:scalafmt-cli_2.13'
version = '3.7.17'
install_args = "-r sonatype:snapshots --main org.scalafmt.cli.Cli"

[mix.jason]
id = 'jason'
version = '1.4'
checksum = 'c5eb0cab91f094599f94d55bc63409236a8ec69a21a67814529e8d5f6cc90b3b'

Then I can easily query the settings.

❯ mise config get 'coursier.scalafmt.id'
org.scalameta:scalafmt-cli_2.13

❯ mise config get 'coursier.scalafmt.version'
3.7.17

❯ mise config get 'coursier.scalafmt.install_args'
-r sonatype:snapshots --main org.scalafmt.cli.Cli

The reason it works because https://github.com/jdx/mise/blob/735cb3ee2601e203759cedd43df615a85bc4692b/schema/mise.json#L1504C1-L1506C6

    "_": {
      "additionalProperties": true
    }

The only downsides to this abuse are:

1. This is not official behavior and might break anytime
2. There is a warning when install tools using mise

❯ mise i
mise WARN  unknown field in ~/Code/experiments/mise-test/mise.toml: coursier
mise all runtimes are installed
mise WARN  unknown field in ~/Code/experiments/mise-test/mise.toml: coursier

My proposal is to make extra configuration support official and disable warning by adding a setting:

[settings]
extra_configuration_sections = ['coursier', 'mix']

The feature to list the keys on the selected level would be nice as well. Here is hypothetical use case.

> mise config get 'coursier' --list
scalafmt

This would simplify the commands I use

❯ mise config get 'coursier' | sed -n -e 's|\[\(.*\)\]|\1|p'
scalafmt

[hverlin]

My understanding is that _ is a special key that you can use for this already:

[_.coursier.scalafmt]
id = 'org.scalameta:scalafmt-cli_2.13'
version = '3.7.17'
install_args = "-r sonatype:snapshots --main org.scalafmt.cli.Cli"

You can then query it:

mise config get _.coursier.scalafmt
# id = "org.scalameta:scalafmt-cli_2.13"
# install_args = "-r sonatype:snapshots --main org.scalafmt.cli.Cli"
# version = "3.7.17"

See the end of this section: https://mise.jdx.dev/configuration.html#global-config-config-mise-config-toml

"_" is a special key for information you'd like to put into mise.toml that mise will never parse

[_]
foo = "bar"

Otherwise, if you validate the configuration you suggested against the schema, you should see this error:

---

There is a tool called dasel that you can use to query toml files. (mise use dasel)

dasel -r toml -w json -f mise.toml _.coursier.scalafmt 
{
  "id": "org.scalameta:scalafmt-cli_2.13",
  "install_args": "-r sonatype:snapshots --main org.scalafmt.cli.Cli",
  "version": "3.7.17"
}

[iilyak]

I am proposing to remove mise WARN unknown field warning when the field is mentioned in the settings.extra_configuration_sections.

[jdx]

I think _ fills the use-case well enough that we don't need extra settings for this sort of behavior. It's a bad idea to allow arbitrary additions since mise may add configuration later that will conflict.