PATH variable is not converted to list in Nushell

[polart]

Describe the bug
For Nushell in the hook for updating env vars here

mise/src/shell/nushell.rs

Line 80 in 78c41b6

load-env {{($var.name): $var.value}}

it sets $env.PATH as a simple string instead of list<string> which Nushell uses for $env.PATH by default.

It doesn't break anything for Mise, but for Nushell if $env.config.completions.external.enable is set to true then extra completions that Nushell can pick up from $env.PATH stop working.

It looks like it can be solved by handling updates for $env.PATH by parsing it to list, something like this:

if $var.name == "PATH" {
    $env.PATH = ($var.value | split row (char esep))
}

After this both Mise and Nushell seem to be working fine.

I can prepare a PR with the fix.

To Reproduce

• using Nushell
• activate Mise
• run $env.PATH | describe
• it outputs string

Expected behavior
After activating Mise running $env.PATH | describe should output list<string> (the default structure Nushell uses for $env.PATH)

mise doctor output

version: 2024.12.10 macos-arm64 (2024-12-14)
activated: yes
shims_on_path: no

build_info:
  Target: aarch64-apple-darwin
  Features: DEFAULT, NATIVE_TLS
  Built: Sat, 14 Dec 2024 18:40:19 +0000
  Rust Version: rustc 1.83.0 (90b35a623 2024-11-26) (Homebrew)
  Profile: release

shell:
  nu
  0.100.0

dirs:
  cache: ~/Library/Caches/mise
  config: ~/.config/mise
  data: ~/.local/share/mise
  shims: ~/.local/share/mise/shims
  state: ~/.local/state/mise

config_files:

backends:
  aqua
  asdf
  cargo
  core
  gem
  go
  npm
  pipx
  spm
  ubi
  vfox

plugins:

toolset:

path:
  ~/.config/carapace/bin
  /opt/homebrew/bin
  /usr/local/bin
  /usr/bin
  /bin
  /usr/sbin
  /sbin
  ~/Applications/iTerm.app/Contents/Resources/utilities

env_vars:
  MISE_SHELL=nu

settings:

No problems found

Additional context
n/a

[samuelallan72]

This appears to be the same issue as #2319 :)

[samuelallan72]

Please see #3592 for a PR with a fix. :)