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feat: add a default_host setting for rust#8154

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jdx merged 1 commit intojdx:mainfrom
aacebedo:aacebedo/add_rustup_default_host
Feb 15, 2026
Merged

feat: add a default_host setting for rust#8154
jdx merged 1 commit intojdx:mainfrom
aacebedo:aacebedo/add_rustup_default_host

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@aacebedo
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This PR add a new setting default_host to the rust module.
This parameter is used by rustup init to install the default toolchain.
On nixos, the default toolchain is x86_64-unknown-linux-musl which cannot run.

If this setting is set to x86_64-unknown-linux-gnu, it starts working on NixOS.

Copilot AI review requested due to automatic review settings February 14, 2026 18:36
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Summary of Changes

Hello @aacebedo, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the Rust plugin by introducing a new default_host configuration setting. This allows users to explicitly define the default host triple for rustup init, which is crucial for ensuring compatibility and correct toolchain installation in environments where the default might be unsuitable, such as NixOS.

Highlights

  • New Rust Setting: Introduced a default_host setting within the Rust plugin configuration to specify the default host triple for rustup init.
  • Rustup Integration: Integrated the new default_host setting into the rustup init command, allowing it to pass the --default-host argument when configured.
  • NixOS Compatibility: Addressed an issue where the default Rust toolchain on NixOS might not be runnable by providing a mechanism to override the default host.
Changelog
  • settings.toml
    • Added a new [rust.default_host] section to define the new setting, including its description, environment variable, and type.
  • src/plugins/core/rust.rs
    • Modified the rustup init command builder to conditionally include the --default-host argument and its value if the settings.rust.default_host is provided.
Activity
  • Pull request created by aacebedo.
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Code Review

This pull request introduces a default_host setting for the Rust plugin, which is a helpful addition for users on platforms like NixOS. The implementation correctly adds the --default-host flag to the rustup init command. The main feedback is that the documentation for this new setting appears to be missing. The comment in settings.toml suggests running mise run render to generate documentation. Please ensure this is done and the generated files are included in the PR. Additionally, I've left a comment in src/plugins/core/rust.rs with a suggestion to improve the pattern for adding optional arguments to commands, which would enhance code clarity and maintainability.

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Pull request overview

This PR adds support for configuring the default host triple for Rust toolchain installation on NixOS systems, where the default x86_64-unknown-linux-musl toolchain cannot run.

Changes:

  • Added rust.default_host setting to allow users to specify a host triple for rustup init
  • Implementation passes the setting via --default-host flag to rustup init command
  • Configuration is exposed via MISE_RUST_DEFAULT_HOST environment variable

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File Description
settings.toml Adds rust.default_host configuration with description, env var, and type specification
src/plugins/core/rust.rs Implements passing the default_host setting to rustup init via optional arguments

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@aacebedo aacebedo force-pushed the aacebedo/add_rustup_default_host branch 5 times, most recently from cc05033 to b4597a9 Compare February 15, 2026 11:21
@aacebedo aacebedo force-pushed the aacebedo/add_rustup_default_host branch from 2ef3d9c to 2e7d8ad Compare February 15, 2026 11:33
@jdx jdx merged commit c17bf0d into jdx:main Feb 15, 2026
33 checks passed
mise-en-dev added a commit that referenced this pull request Feb 16, 2026
### 🚀 Features

- **(vfox)** allow plugins to request env var redaction via
MiseEnvResult by @jdx in [#8166](#8166)
- add a default_host setting for rust by @aacebedo in
[#8154](#8154)
- add github_content package support for aqua backend by @risu729 in
[#8147](#8147)
- support devEngines.runtime in deno by @risu729 in
[#8144](#8144)

### 🐛 Bug Fixes

- **(asset_matcher)** penalize vsix files by @risu729 in
[#8151](#8151)
- **(edit)** strip formatting whitespace from TOML values in `mise edit`
by @jdx in [#8162](#8162)
- **(install)** improve --locked support for python and ubi backends by
@jdx in [#8163](#8163)
- **(npm)** suppress npm update notifier while npm install by @risu729
in [#8152](#8152)
- **(schema)** add task_templates, extends, and timeout by @risu729 in
[#8145](#8145)

### 🚜 Refactor

- **(registry)** remove [key=value] options syntax from backends by
@risu729 in [#8146](#8146)

### 📚 Documentation

- **(settings)** remove wrong tip for github_attestations by @risu729 in
[#8158](#8158)

### Chore

- **(release-plz)** delete embedded plugins directory before update by
@risu729 in [#8149](#8149)
- adds necessary env var to the mcp help message in cli by @joaommartins
in [#8133](#8133)

### New Contributors

- @joaommartins made their first contribution in
[#8133](#8133)

## 📦 Aqua Registry Updates

#### New Packages (5)

- [`containers/podlet`](https://github.com/containers/podlet)
-
[`hickford/git-credential-azure`](https://github.com/hickford/git-credential-azure)
-
[`hickford/git-credential-oauth`](https://github.com/hickford/git-credential-oauth)
- [`kovetskiy/mark`](https://github.com/kovetskiy/mark)
- [`openbao/openbao/bao`](https://github.com/openbao/openbao/bao)
lucasew pushed a commit to lucasew/CONTRIB-mise that referenced this pull request Feb 18, 2026
This PR add a new setting default_host to the rust module.
This parameter is used by rustup init to install the default toolchain.
On nixos, the default toolchain is x86_64-unknown-linux-musl which
cannot run.

If this setting is set to x86_64-unknown-linux-gnu, it starts working on
NixOS.
lucasew pushed a commit to lucasew/CONTRIB-mise that referenced this pull request Feb 18, 2026
### 🚀 Features

- **(vfox)** allow plugins to request env var redaction via
MiseEnvResult by @jdx in [jdx#8166](jdx#8166)
- add a default_host setting for rust by @aacebedo in
[jdx#8154](jdx#8154)
- add github_content package support for aqua backend by @risu729 in
[jdx#8147](jdx#8147)
- support devEngines.runtime in deno by @risu729 in
[jdx#8144](jdx#8144)

### 🐛 Bug Fixes

- **(asset_matcher)** penalize vsix files by @risu729 in
[jdx#8151](jdx#8151)
- **(edit)** strip formatting whitespace from TOML values in `mise edit`
by @jdx in [jdx#8162](jdx#8162)
- **(install)** improve --locked support for python and ubi backends by
@jdx in [jdx#8163](jdx#8163)
- **(npm)** suppress npm update notifier while npm install by @risu729
in [jdx#8152](jdx#8152)
- **(schema)** add task_templates, extends, and timeout by @risu729 in
[jdx#8145](jdx#8145)

### 🚜 Refactor

- **(registry)** remove [key=value] options syntax from backends by
@risu729 in [jdx#8146](jdx#8146)

### 📚 Documentation

- **(settings)** remove wrong tip for github_attestations by @risu729 in
[jdx#8158](jdx#8158)

### Chore

- **(release-plz)** delete embedded plugins directory before update by
@risu729 in [jdx#8149](jdx#8149)
- adds necessary env var to the mcp help message in cli by @joaommartins
in [jdx#8133](jdx#8133)

### New Contributors

- @joaommartins made their first contribution in
[jdx#8133](jdx#8133)

## 📦 Aqua Registry Updates

#### New Packages (5)

- [`containers/podlet`](https://github.com/containers/podlet)
-
[`hickford/git-credential-azure`](https://github.com/hickford/git-credential-azure)
-
[`hickford/git-credential-oauth`](https://github.com/hickford/git-credential-oauth)
- [`kovetskiy/mark`](https://github.com/kovetskiy/mark)
- [`openbao/openbao/bao`](https://github.com/openbao/openbao/bao)
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2 participants