Error from document-level caching with non-standard Jupyter kernel #9244
Description
While adapting my own ipykernel-based kernel for Matlab to the new support from Quarto, I tried document-level caching and ran into an error. To exclude a problem with my kernel, I tried with echo_kernel.
Minimal document cache.qmd:
---
jupyter: echo
execute:
cache: true
---
```{echo}
2 + 2
```The first processing works without a problem:
$ quarto preview cache.qmd --no-browser --no-watch-inputs
Starting echo kernel...Done
Executing 'cache.quarto_ipynb'
pandoc
to: html
output-file: cache.html
standalone: true
section-divs: true
html-math-method: mathjax
wrap: none
default-image-extension: png
metadata
document-css: false
link-citations: true
date-format: long
lang: en
jupyter: echo
Output created: cache.html
Watching files for changes
Browse at http://localhost:5271/
But on reprocessing (triggered by saving the file, but without changes ), this happens:
Starting echo kernel...ERROR:
expected str, bytes or os.PathLike object, not builtin_function_or_method
To get more information:
$ quarto preview cache.qmd --no-browser --no-watch-inputs --execute-debug
- Connecting to kernel
Starting echo kernel...2024-03-30 00:43:19,923 - root - Level 25 - starting notebook server subprocess
2024-03-30 00:43:19,923 - root - Level 25 - starting notebook server subprocess
2024-03-30 00:43:20,175 - root - Level 25 - running notebook server subprocess
2024-03-30 00:43:20,175 - root - Level 25 - creating notebook server (tcp: /run/user/1000/jt/9a71d08a82b73a3b4e56)
2024-03-30 00:43:20,176 - root - Level 25 - notebook server bound to port 42867
- Kernel connection successful
2024-03-30 00:43:20,274 - root - Level 25 - handling server request
- Sending execute command to kernel
- Execute command sent, reading response
2024-03-30 00:43:20,285 - root - Level 25 - executing notebook
2024-03-30 00:43:20,285 - root - Level 25 - inside notebook_execute
2024-03-30 00:43:20,321 - root - Level 25 - notebook was read
2024-03-30 00:43:20,322 - root - Level 25 - {
"name": "echo",
"language": "text",
"display_name": "Echo",
"path": "/home/ca/.local/share/jupyter/kernels/echo"
}
2024-03-30 00:43:20,322 - root - Level 25 - No text directory found in /opt/quarto/share/jupyter/lang/text
2024-03-30 00:43:20,322 - root - Level 25 - Will look for explicit quarto setup cell information in kernelspec dir
2024-03-30 00:43:20,322 - root - Level 25 - No quarto_setup_cell file found in /home/ca/.local/share/jupyter/kernels/echo
2024-03-30 00:43:20,322 - root - Level 25 - /home/ca/.local/share/jupyter/kernels/echo/quarto_setup_cell
2024-03-30 00:43:20,323 - root - Level 25 - using cache
2024-03-30 00:43:20,323 - root - Level 25 - getting cache
- Error response received
ERROR:
expected str, bytes or os.PathLike object, not builtin_function_or_method
Created from #9100 (comment).
Quarto check
$ quarto check
Quarto 1.5.27
[✓] Checking versions of quarto binary dependencies...
Pandoc version 3.1.11: OK
Dart Sass version 1.70.0: OK
Deno version 1.41.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
Version: 1.5.27
Path: /opt/quarto/bin
[✓] Checking tools....................OK
TinyTeX: (not installed)
Chromium: (not installed)
[✓] Checking LaTeX....................OK
Using: Installation From Path
Path: /usr/bin
Version: 2022
[✓] Checking basic markdown render....OK
[✓] Checking Python 3 installation....OK
Version: 3.10.12 (Conda)
Path: /home/ca/Store/micromamba/envs/std/bin/python
Jupyter: 5.3.1
Kernels: python3, mkernel, echo
[✓] Checking Jupyter engine render....OK
[✓] Checking R installation...........OK
Version: 4.3.3
Path: /usr/lib/R
LibPaths:
- /home/ca/Store/R/4.3
- /usr/local/lib/R/site-library
- /usr/lib/R/site-library
- /usr/lib/R/library
knitr: 1.45
rmarkdown: 2.25
[✓] Checking Knitr engine render......OK