Error looping over files

[raymon-roos]

Hi! Thanks for your work on this plugin, I'm super excited for the potential!

I tried looping over some audio files in a directory to view their metada:

ls | get name | each {sound meta $in}

and ran into the following error:

Error: nu::shell::only_supports_this_input_type

  × Input type not supported.
    ╭─[repl_entry #68:1:1]
  1 │ ls | get name | each {sound meta $in}
    ·   ─┬                     ─────┬────
    ·    │                          ╰── only nothing and binary input data is supported
    ·    ╰── input type: string
    ╰────

Incidentally sound meta (ls | get 0.name) succeeds.

I'm sorry if I misunderstand how it's supposed to work.

I'm using version v.0.2.4 of the plugin, and Nushell version 0.111. Built from source on NixOS.

[raymon-roos]

ls | get name | each { let f = $in; sound meta $f } is a workaround.

[SuaveIV]

It's definitely a bug. The sound meta command is too picky about its pipeline input; it currently only accepts Nothing or Binary.

When you run each { sound meta $in }, Nushell tries to pipe that string into the command. Since sound meta doesn't think it's supposed to take strings from a pipe, the type-checker kills it before it can start.

The reason your workaround works:

ls | get name | each { let f = $in; sound meta $f }

is that sound meta $f passes the path as an argument instead of through the pipe. That skips the check that's causing the error.

I'm going to update the signature to allow Any input so the normal pipe syntax works. I also noticed the help text for that command accidentally says "file to play" instead of "file to read," so I'll fix that error while I'm at it.

Thanks for reporting this and sharing that workaround. I should have this sorted in the next release!