Update Nushell integration

Depends on jdx/mise#1763 in release.

getting-started.md

@@ -36,15 +36,19 @@ this uses `~/.local/bin/mise` as the binary location since that's what https://m
 installed mise by some other means it may be on PATH or somewhere different.
 
 ::: code-group
+
 ```sh [bash]
 echo 'eval "$(~/.local/bin/mise activate bash)"' >> ~/.bashrc
 ```
+
 ```sh [zsh]
 echo 'eval "$(~/.local/bin/mise activate zsh)"' >> ~/.zshrc
 ```
+
 ```sh [fish]
 echo '~/.local/bin/mise activate fish | source' >> ~/.config/fish/config.fish
 ```
+
 :::
 
 ### 2b. Alternative: Add mise shims to PATH
@@ -55,12 +59,15 @@ mise in interactive sessions (.bash_profile/.zprofile will work in non-interacti
 like scripts or IDEs).
 
 ::: code-group
+
 ```sh [bash]
 echo 'export PATH="$HOME/.local/share/mise/shims:$PATH"' >> ~/.bash_profile
 ```
+
 ```sh [zsh]
 echo 'export PATH="$HOME/.local/share/mise/shims:$PATH"' >> ~/.zprofile
 ```
+
 ```sh [fish]
 fish_add_path ~/.local/share/mise/shims
 ```
@@ -112,6 +119,7 @@ curl https://mise.run | sh
 ```
 
 Options:
+
 - `MISE_DEBUG=1` – enable debug logging
 - `MISE_QUIET=1` – disable non-error output
 - `MISE_INSTALL_PATH=/some/path` – change the binary path (default: `~/.local/bin/mise`)
@@ -128,18 +136,23 @@ sh ./install.sh
 or if you're allergic to `| sh`:
 
 ::: code-group
+
 ```sh [macos-arm64]
 curl https://mise.jdx.dev/mise-latest-macos-arm64 > ~/.local/bin/mise
 ```
+
 ```sh [macos-x64]
 curl https://mise.jdx.dev/mise-latest-macos-x64 > ~/.local/bin/mise
 ```
+
 ```sh [linux-x64]
 curl https://mise.jdx.dev/mise-latest-linux-x64 > ~/.local/bin/mise
 ```
+
 ```sh [linux-arm64]
 curl https://mise.jdx.dev/mise-latest-linux-arm64 > ~/.local/bin/mise
 ```
+
 :::
 
 It doesn't matter where you put it. So use `~/bin`, `/usr/local/bin`, `~/.local/bin` or whatever.
@@ -175,6 +188,7 @@ _mise lives in the [community repository](https://gitlab.alpinelinux.org/alpine/
 For installation on Ubuntu/Debian:
 
 ::: code-group
+
 ```sh [amd64]
 apt update -y && apt install -y gpg sudo wget curl
 sudo install -dm 755 /etc/apt/keyrings
@@ -192,6 +206,7 @@ echo "deb [signed-by=/etc/apt/keyrings/mise-archive-keyring.gpg arch=arm64] http
 sudo apt update
 sudo apt install -y mise
 ```
+
 :::
 
 ### aur
@@ -326,12 +341,24 @@ See [`MISE_FISH_AUTO_ACTIVATE=1`](/configuration#mise_fish_auto_activate1) for m
 
 #### Nushell
 
+Since Nu does [not support `eval`](https://www.nushell.sh/book/how_nushell_code_gets_run.html#eval-function) you must save the activation script:
+
+```nushell
+let mise_path = $nu.default-config-dir | path join scripts mise.nu
+^mise activate nu | save $mise_path --force
+"\nuse mise.nu" | save $nu.config-path --append
+```
+
+If you prefer to keep your dotfiles clean you can save it to another directory then update `$env.NU_LIB_DIRS`:
+
+```nushell
+"\n$env.NU_LIB_DIRS ++= ($mise_path | path dirname | to nuon)" | save $nu.env-path --append
+```
+
+You can update the generated script at any time by re-running:
+
 ```nushell
-do {
-  let misepath = ($nu.config-path | path dirname | path join "mise.nu")
-  run-external mise activate nu --redirect-stdout | save $misepath -f
-  $"\nsource "($misepath)"" | save $nu.config-path --append
-}
+^mise activate nu | save $mise_path --force
 ```
 
 #### Xonsh