polars operations with columns in lazyframes

[maxim-uvarov]

Describe the bug

After using polars rename error happens when trying to substract one column from another.

How to reproduce

❯ let new = ([9 8 4] | polars into-df)

> let new_2 = $new * 3 + 10 | polars rename "0" memorable

> $new_2
╭────────────────┬────────────────────────────────────────────────────╮
│ plan           │ RENAME                                             │
│                │   DF ["0"]; PROJECT */1 COLUMNS; SELECTION: "None" │
│ optimized_plan │ RENAME                                             │
│                │   DF ["0"]; PROJECT */1 COLUMNS; SELECTION: "None" │
╰────────────────┴────────────────────────────────────────────────────╯

> $new - $new_2
Error: nu::shell::cant_convert

  × Can't convert to NuDataFrame.
   ╭─[entry #18:1:8]
 1 │ $new - $new_2
   ·        ───┬──
   ·           ╰── can't convert NuLazyFrameCustomValue to NuDataFrame
   ╰──── 

Expected behavior

I expect polars to work

Screenshots

No response

Configuration

key	value
version	0.93.1
major	0
minor	93
patch	1
branch	main
commit_hash	c54d223
build_os	macos-aarch64
build_target	aarch64-apple-darwin
rust_version	rustc 1.77.2 (25ef9e3d8 2024-04-09)
rust_channel	1.77.2-aarch64-apple-darwin
cargo_version	cargo 1.77.2 (e52e36006 2024-03-26)
build_time	2024-05-07 05:50:32 +00:00
build_rust_channel	release
allocator	mimalloc
features	dataframe, default, sqlite, system-clipboard, trash, which
installed_plugins	explore, image, inc, polars

Additional context

No response

[ayax79]

I create a pull request for the fix: #12819

[maxim-uvarov]

I checked, the example from my initial issue, and it works now. Thank you!

Though, I found a new inconsistency. I filled an issue : #12821

[maxim-uvarov]

I moved the content of my previous version of this comment into a separate issue: #12863

[maxim-uvarov]

I checked the example and everything works in the latest main. Thank you @ayax79

> let new = ([9 8 4] | polars into-df)
> let new_2 = $new * 3 + 10 | polars rename "0" memorable
> $new_2
> $new - $new_2
╭─#─┬─sub_0_memorable─╮
│ 0 │             -28 │
│ 1 │             -26 │
│ 2 │             -18 │
╰─#─┴─sub_0_memorable─╯