### 🐛 Bug Fixes

- **(install)** use backend bin paths for per-tool postinstall hooks by
@jdx in [#8234](#8234)
- **(use)** write to config.toml instead of config.local.toml by @jdx in
[#8240](#8240)
- default legacy .mise.backend installs to non-explicit by @jean-humann
in [#8245](#8245)

### 🚜 Refactor

- **(config)** consolidate flat task_* settings into nested task.* by
@jdx in [#8239](#8239)

## [2026.2.18](https://github.com/jdx/mise/compare/v2026.2.17..v2026.2.18) - 2026-02-21

### 🚀 Features

- **(install)** auto-lock all platforms after tool installation by @jdx in [#8277](jdx/mise#8277)

### 🐛 Bug Fixes

- **(config)** respect --yes flag for config trust prompts by @jdx in [#8288](jdx/mise#8288)
- **(exec)** strip shims from PATH on Unix to prevent infinite recursion by @jdx in [#8276](jdx/mise#8276)
- **(install)** validate --locked before --dry-run short-circuit by @altendky in [#8290](jdx/mise#8290)
- **(release)** refresh PATH after mise up in release-plz by @jdx in [#8292](jdx/mise#8292)
- **(schema)** replace unevaluatedProperties with additionalProperties by @jdx in [#8285](jdx/mise#8285)
- **(task)** avoid duplicated stderr on task failure in replacing mode by @jdx in [#8275](jdx/mise#8275)
- **(task)** use process groups to kill child process trees on Unix by @jdx in [#8279](jdx/mise#8279)
- **(task)** run depends_post tasks even when parent task fails by @jdx in [#8274](jdx/mise#8274)
- **(task)** suggest similar commands when mistyping a CLI subcommand by @jdx in [#8286](jdx/mise#8286)
- **(task)** execute monorepo subdirectory prepare steps from root by @jdx in [#8291](jdx/mise#8291)
- **(upgrade)** don't force-reinstall already installed versions by @jdx in [#8282](jdx/mise#8282)
- **(watch)** restore terminal state after watchexec exits by @jdx in [#8273](jdx/mise#8273)

### 📚 Documentation

- clarify that MISE_CEILING_PATHS excludes the ceiling directory itself by @jdx in [#8283](jdx/mise#8283)

### Chore

- replace gen-release-notes script with communique by @jdx in [#8289](jdx/mise#8289)

### New Contributors

- @altendky made their first contribution in [#8290](jdx/mise#8290)

### 📦 Aqua Registry Updates

#### New Packages (4)

- [`Skarlso/crd-to-sample-yaml`](https://github.com/Skarlso/crd-to-sample-yaml)
- [`kunobi-ninja/kunobi-releases`](https://github.com/kunobi-ninja/kunobi-releases)
- [`swanysimon/markdownlint-rs`](https://github.com/swanysimon/markdownlint-rs)
- [`tmux/tmux-builds`](https://github.com/tmux/tmux-builds)

#### Updated Packages (2)

- [`firecow/gitlab-ci-local`](https://github.com/firecow/gitlab-ci-local)
- [`k1LoW/runn`](https://github.com/k1LoW/runn)

## [2026.2.17](https://github.com/jdx/mise/compare/v2026.2.16..v2026.2.17) - 2026-02-19

### 🚀 Features

- **(prepare)** update mtime of outputs after command is run by @halms in [#8243](jdx/mise#8243)

### 🐛 Bug Fixes

- **(install)** use backend bin paths for per-tool postinstall hooks by @jdx in [#8234](jdx/mise#8234)
- **(use)** write to config.toml instead of config.local.toml by @jdx in [#8240](jdx/mise#8240)
- default legacy .mise.backend installs to non-explicit by @jean-humann in [#8245](jdx/mise#8245)

### 🚜 Refactor

- **(config)** consolidate flat task_* settings into nested task.* by @jdx in [#8239](jdx/mise#8239)

### Chore

- **(prepare)** refactor common code into ProviderBase by @halms in [#8246](jdx/mise#8246)

### 📦 Aqua Registry Updates

#### Updated Packages (1)

- [`namespacelabs/foundation/nsc`](https://github.com/namespacelabs/foundation/nsc)

## Summary

- Fix legacy `.mise.backend` files (2-line format) defaulting to
`explicit_backend = true`, which prevents auto-migration to updated
registry backends

## Problem

`mise install glab@1.85.3` fails with:

```
mise WARN  deprecated [ubi]: The ubi backend is deprecated
mise ERROR Failed to install gitlab:gitlab-org/cli@1.85.3: HTTP request to
  https://api.github.com/repos/gitlab-org/cli/releases/tags/1.85.3 returned an error status
```

The registry correctly maps `glab` → `gitlab:gitlab-org/cli`, but the
auto-migration logic in `BackendArg::full()` is blocked because legacy
installs are marked as `explicit_backend = true`.

## Root Cause

In `src/toolset/install_state.rs`, `read_legacy_backend_meta()` parses
the old 2-line `.mise.backend` format:

```
glab
ubi:gitlab-org/cli[provider=gitlab,exe=glab]
```

Line 130 defaults missing third line to explicit:

```rust
let explicit_backend = lines.get(2).is_none_or(|v| *v == "1");
//                                  ^^^^^^^^^^^ None → true
```

This prevents the registry-based backend resolution in
`BackendArg::full()` from running for any legacy install.

## Fix

Change `is_none_or` → `is_some_and` so legacy installs (which were
always resolved from the registry, never explicitly chosen) default to
`explicit_backend = false`:

```rust
let explicit_backend = lines.get(2).is_some_and(|v| *v == "1");
```

This allows the auto-migration logic to resolve them to current registry
backends.

## Test plan

- [ ] Verify `mise install glab@1.85.3` resolves to
`gitlab:gitlab-org/cli` and installs from `gitlab.com`
- [ ] Verify explicitly installed backends (3-line format with `1`)
still respect the explicit flag
- [ ] Verify tools without legacy `.mise.backend` files are unaffected

Fixes jdx#8244

### 🐛 Bug Fixes

- **(install)** use backend bin paths for per-tool postinstall hooks by
@jdx in [jdx#8234](jdx#8234)
- **(use)** write to config.toml instead of config.local.toml by @jdx in
[jdx#8240](jdx#8240)
- default legacy .mise.backend installs to non-explicit by @jean-humann
in [jdx#8245](jdx#8245)

### 🚜 Refactor

- **(config)** consolidate flat task_* settings into nested task.* by
@jdx in [jdx#8239](jdx#8239)