我正在使用install-tl以下配置文件：
selected_scheme scheme-basic
TEXDIR /path/to/build/texlive-basic
TEXMFLOCAL /path/to/build/texlive-basic/texmf-dist/texmf-local
TEXMFSYSVAR /path/to/build/texlive-basic/texmf-dist/texmf-var
TEXMFSYSCONFIG /path/to/build/texlive-basic/texmf-dist/texmf-config
collection-xetex 1
collection-luatex 1
它生成以下*.fmt文件：
build/texlive-basic/texmf-dist/texmf-var/web2c/xetex/xelatex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/xetex/xelatex-dev.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/xetex/xetex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/tex/tex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/luatex/dviluatex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/luatex/optex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/luatex/luatex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/pdftex/etex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/pdftex/pdfetex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/pdftex/pdftex.fmt
build/texlive-basic/texmf-dist/texmf-var/web2c/luahbtex/luahbtex.fmt
确实fmtutil-sys --all运行了：running fmtutil-sys --no-error-if-no-engine=luajithbtex,luajittex,mfluajit --no-strict --all ...done。没有...failed消息。
\documentclass当我尝试使用with编译 LaTeX 文件时--fmt .../pdftex.fmt，我得到
This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021_busytexnative) (preloaded format=/home/runner/work/busytex/busytex/dist-native/pdftex.fmt)
entering extended mode
(./example.tex
! Undefined control sequence.
这可能意味着 LaTeX 宏未加载到格式中。是真的吗？
我如何才能install-tl生产pdflatex.fmt和lualatex.fmt？
问题似乎在于fmtutil.pl无法正确发现引擎。如何fmtutil.pl发现引擎？我应该添加一些环境变量吗fmtutil.pl？
尽管 ，但不知何故collection-latex(和latex-bin) 并未安装scheme-basic。我该如何强制install-tl安装它？