Warn user when latex is running its (very) long setup steps

I have:

• searched the issue tracker for similar issues
• installed the latest version of Quarto CLI
• formatted my issue following the Bug Reports guide

Bug description

When rendering a Quarto file to PDF, the rendering is stuck at "running lualatex", no error msg or output were given. Switching to other engines such as pdflatex and xelatex fixes this. This problem persists after switching to Tex distribution other than built in tinytex.

Steps to reproduce

A basic qmd file can reproduce this:

Some content

Then run quarto render file.qmd --to pdf.

Actual behavior

The rendering is stuck at "running lualatex".

  quarto render clean_test.qmd  --to pdf -o clean.pdf --verbose
pandoc -o clean_test.tex --verbose
  to: latex
  standalone: true
  pdf-engine: lualatex
  variables:
    graphics: true
    tables: true
  default-image-extension: pdf

metadata
  documentclass: scrartcl
  classoption:
    - DIV=11
    - numbers=noendperiod
  papersize: letter
  header-includes:
    - \KOMAoption{captions}{tableheading}
  block-headings: true

[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/template.patched from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/template.patched
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/passoptions.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/passoptions.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/doc-class.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/doc-class.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/fonts.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/fonts.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/font-settings.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/font-settings.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/common.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/common.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/pandoc.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/pandoc.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/tables.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/tables.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/graphics.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/graphics.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/citations.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/citations.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/babel-lang.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/babel-lang.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/tightlist.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/tightlist.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/biblio-config.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/biblio-config.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/after-header-includes.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/after-header-includes.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/hypersetup.latex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/hypersetup.latex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-title.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-title.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/title.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/title.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-body.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-body.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/toc.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/toc.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-bib.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/before-bib.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/biblio.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/biblio.tex
[INFO] Loaded /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/after-body.tex from /var/folders/yz/bptz74295sb69lwznx99tw340000gn/T/quarto-sessione88ce86d23396cac/94420901d46b2665/68fb0f8e15a55d37/after-body.tex
[INFO] Running filter /Applications/quarto/share/filters/main.lua
[INFO] Completed filter /Applications/quarto/share/filters/main.lua in 25 ms

Rendering PDF
running lualatex - 1

Expected behavior

The rendering should proceed correctly.

Your environment

• Quarto: 1.8.25
• OS: macOS Tahoe
• TinyTex v2025.10, installed via Quarto

Quarto check output

Quarto 1.8.25
[✓] Checking environment information...
      Quarto cache location: /Users/sghuang/Library/Caches/quarto
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.6.3: OK
      Dart Sass version 1.87.0: OK
      Deno version 2.3.1: OK
      Typst version 0.13.0: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.8.25
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /opt/homebrew/bin
      Version: undefined

[✓] Checking Chrome Headless....................OK
      Using: Chrome found on system
      Path: /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
      Source: MacOS known location

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.13.7 (Conda)
      Path: /Users/sghuang/mamba/envs/ds/bin/python
      Jupyter: 5.8.1
      Kernels: python3, ds

(-) Checking Jupyter engine render....

Extra data: line 2 column 1 (char 209843)
(-) Checking Jupyter engine render....WARN: Error encountered when rendering files
[✓] Checking Jupyter engine render....OK