Today, we're releasing version 0.104.0 of Nu. This release adds additional job control capabilities, many datetime improvements, and a number of new Polars commands.

Starship is a customizable prompt with support for multiple shells, including Nushell.

Starship v1.23.0 includes:

completions: Offer Nushell completions (#6366) (df454d5)

The completions can be generated in the env.nu into an autoload dir:

 nu

    
starship completions nushell | save --force $'($nu.user-autoload-dirs | last)/starship-completions.nu'

  

I have a setup that generates env files only once per day, resulting in faster shell startup otherwise.

 nu

    
call-if-old $'($nu.user-autoload-dirs | last)/starship-completions.nu' {|filepath| starship completions nushell | save -f $filepath }

  

call-if-old is a command I defined.

Completions Demonstration:

![](https://lazysoci.al/api/v3/image_proxy?url=

Highlights:

• Support for Background Jobs
• Official .deb, .rpm, and .apk packages
• Custom Command Attributes (@example, @search-terms)
• std-rfc Module (experiments considered for the std lib)
• Improvements to LSP
• Improvements to Reedline Vi-mode

My website is implemented through Hugo, with content sources in Markdown. Metadata is added through a so-called "front matter" header within Markdown files. I noticed date metadata (front matter) was missing on content pages and consequently had 2001 on RSS feeds.

I used Nushell to en-mass add page dates after-the-fact, with date values determined through Git.

 nu

    
# Determine pages with missing date front matter (may be missing pages that have `date = ` as content)
glob **/*.md | where {|x| $x | open | not ($in | str contains 'date = ') } | save missing.json

# Determine content creation dates through Git add authoring date
open missing.json | wrap path | upsert date {|x| git log '--follow' '--diff-filter=A' '--format=%ad' '--date=iso' '--' $x.path | into datetime } | save dates.json

# Prepend date TOML front matter to closing fence
open dates.json | each {|x| $x.path | open --raw | str replace "\r\n+++\r\n" $"\r\ndate = \"($x.
  

I added two solutions to the Rosetta Code FizBuzz page in Nu.

The one that was already there was quite confusing/non-intuitive to me; with string determination, and by index value fixups.

I like the match solution because it's structurally obvious and demonstrates the record-field-value match and logical case matching:

 nu

    
1..100 | each {
  { x: $in, mod3: ($in mod 3), mod5: ($in mod 5), }
  | match $in {
    { mod3: 0, mod5: 0, } => 'FizzBuz',
    { mod3: 0, mod5: _, } => 'Fizz',
    { mod3: _, mod5: 0, } => 'Buzz',
                        _ => $in.x
  }
} | str join "\n"

  

Do you have alternative suggestions or improvements?

Nushell is a powerful shell and scripting language with strong typing, querying, and piping functionalities.

This release adds runtime pipeline input type checking, several new commands and operators, and various other miscellaneous improvements.

I track and version my Nushell environment and configuration in a public repository.

I added a GitHub Actions workflow that tests these files. That will ensure a more defined environment and prerequisites/assumptions, given that they have to be set up in the workflow configuration. Given that I mostly work on Windows, but set up the CI to run on Linux/Ubuntu, it will also ensure platform neutrality.

Since Nushell version 0.101.0, there's no need for a default, base env.nu or config.nu, and the nu binary can be called with only the custom, minimal env and config files.

The nu binary offers --env-config and --config parameters.

I noticed that when using them, errors do not lead to error exist codes; nu will continue execution and report success despite env or config not loading [correctly]. (Bug Ticket #14745)

Do you version your environment configuration? Only locally,

• Simplified Startup Configuration
• path self
• chunk-by
• term query
• merge deep
• WASM support (again)
• sys net inclueds new columns mac and ip
• raw string pattern matching
• dates can now be added to durations
• additional explore keybinds
• version in startup banner
• input --default
• PowerShell script invocation on Windows
• new introspection tools

Breaking Changes:

• ++ operator, stricter command signature parsing (resolves silent parse errors)
• group-by now supports "groupers" (multiple criteria)
• timeit
• sys cpu
• from csv and from tsv
• std/iter scan
• completion sorting in custom completers, import module naming with normalization
• display_output hook
• du flag changes
• Code specific environment variables updated during source

Command dl opus to download highest quality audio as or into an opus file through yt-dlp.

Add to config.nu:

 nu

    
# Download highest quality Opus audio as/into .opus file
def "dl opus" [url: string] {
    yt-dlp --extract-audio --audio-quality 0 --audio-format opus $"($url)"
}

  

Usage:

 nu

    
dl opus <url>

  

I have set up dl as an alias for yt-dlp via alias dl = yt-dlp. The def above adds an overlaying sub-command.