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Add Look In Ruby Version Dotfile as a Mise TIL

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jbranchaud
2026-01-01 16:00:46 -07:00
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README.md
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@@ -10,7 +10,7 @@ working across different projects via [VisualMode](https://www.visualmode.dev/).
For a steady stream of TILs, [sign up for my newsletter](https://visualmode.kit.com/newsletter).
_1716 TILs and counting..._
_1717 TILs and counting..._
See some of the other learning resources I work on:
@@ -747,6 +747,7 @@ If you've learned something here, support my efforts writing daily TILs by
- [Create Umbrella Task For All Test Tasks](mise/create-umbrella-task-for-all-test-tasks.md)
- [List The Files Being Loaded By Mise](mise/list-the-files-being-loaded-by-mise.md)
- [Look In Ruby Version Dotfile](mise/look-in-ruby-version-dotfile.md)
- [Preserve Color Output For Task Command](mise/preserve-color-output-for-task-command.md)
- [Read Existing Dot Env File Into Env Vars](mise/read-existing-dot-env-file-into-env-vars.md)
- [Run A Command With Specific Tool Version](mise/run-a-command-with-specific-tool-version.md)

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mise/look-in-ruby-version-dotfile.md Normal file
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# Look In Ruby Version Dotfile
Newer versions of [`mise`](https://mise.jdx.dev/dev-tools/) specifically only
look for tool versions in `mise.toml` as well as the asdf `.tool-versions` file.
A lot of Ruby projects use the `.ruby-version` file to indicate the Ruby version
of a project. To continue to use the `.ruby-version` file instead of migrating
to `mise.toml`, you need to tell `mise` that you prefer to use the idiomatic
version file.
I added the following line to my
[`~/.config/mise/config.toml`](https://github.com/jbranchaud/dotfiles/commit/8edeb7a9c53500e89e88b4079cbd1859ebebcbda)
file:
```toml
idiomatic_version_file_enable_tools = ["ruby"]
```
Now, whenever `mise` is looking for the specified Ruby version of a project, it
will also look for `.ruby-version`.
Here is a [full list of idomatic version files supported by
`mise`](https://mise.jdx.dev/configuration.html#idiomatic-version-files).
See
[`idiomatic_version_file_enable_tools`](https://mise.jdx.dev/configuration/settings.html#idiomatic_version_file_enable_tools)
for more details.