When building a package that 'BuildRequires: tetex tetex-latex' I get:

+ pdflatex tutorial
This is pdfTeXk, Version 3.141592-1.40.3 (Web2C 7.5.6)
 %&-line parsing enabled.
kpathsea: Running mktexfmt pdflatex.fmt
I can't find the format file `pdflatex.fmt'!
+ exit 0

Either texlive-latex (which provides pdflatex) should require whatever package
produces pdflatex.fmt (which doesn't seem to be packaged, but generated in a
%post or something) or do the generation itself.

Or, are there different BuildRequires: that I should be using here?