# Nushell core team meeting 2025-07-09
## Attendees
- Jack
- Rose
- Stefan
- Michael
- Piet
- Bahex
- Yash
- Antoine
- Devyn
- Darren
-

## Agenda
- [x] Polars type checking issue {%preview https://github.com/nushell/nushell/pull/16079 %}
- [x] {%preview https://github.com/nushell/new-nu-parser/pull/58 %}
- [x] {%preview https://github.com/nushell/nushell/issues/14111 %}
- seems like it should be possible to implement while only breaking globs in command position?
- [x]

## Discussed Topics

### polars/customvalue type checking issue
- change NuDataFrame, etc. to match input/output
- warn on customvaule mismatches (ideally once per session), eventually plugin authors can fix the plugins

### glob string literal
- backtick strings from their behavior are pretty close to that in their logic
- we would like to make it explicit
- challenges:
- autocd
- command position clean (beginning of a pipeline element)
- completion for weirdly named executables needs to prepend the caret (and use single quotes)
- also deprecation
- command in fresh binding rhs
- currently still permitted (just for external commands!?!?)
- would require a warning/deprecation
- command in reassignment rhs is already an error