idiomatic versions default disabled

[jdx]

I am starting to feel that idiomatic versions should default to disabled and enabled via settings for specific tools. I think back when mise started defaulting to enabled made sense because each language required a plugin. Now that most of the tools with idiomatic versions are core, it's weird that just having a go.mod or Gemfile in the project directory causes mise to install that tool.

While it's certainly convenient that mise works with everything out of the box, I think it's too much and before these files should be used a command like mise settings add idiomatic_version_file_enable_tools ruby.

This is, of course, a breaking change. My plan to roll it out is to show a warning when an idiomatic version file is in use and the setting is not set for 6 months.

I'll leave this open for 30 days and go with whatever people think is best.

[jdx]

my plan:

• add a new setting, idiomatic_version_file_enable_tools = ["ruby"] that does what you'd think (open to ideas on naming)
• deprecate old setting idiomatic_version_file_disable_tools and direct users to new "enable" setting
• if an idiomatic file is in the tree and idiomatic_version_file_enable_tools is not set, show the following deprecation warning:

(example for if .ruby-version was the idiomatic file being used)

deprecated: idiomatic version files like `.ruby-version` are currently automatically
            used by mise but this functionality will be removed in the 2025.9.0 release of mise.
            Explicitly enable idiomatic version file support for ruby with
            `mise settings add idiomatic_version_file_enable_tools ruby` to remove this
            deprecation warning and continue using `.ruby-version` files
            with mise—however note this will cause mise to not read idiomatic version files
            for any other tools unless they are also enabled via settings.

[glasser]

Is .tool-versions considered an idiomatic version in this context?

[jdx]

no