Bug#897098: ppl FTBFS with TeX Live 2018

[Adrian Bunk]

Source: ppl
Version: 1:1.2-2
Severity: serious

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/ppl.html

...
pl-1.2/doc/bugseng_logo.pdf>] [4] [1] [2] (./index.tex
Underfull \hbox (badness 10000) detected at line 9
[][][]
pdfTeX warning (ext4): destination with the same identifier (name{page.1}) has 
been already used, duplicate ignored
<to be read again> 
                   \relax 
l.25 
      [1]) (/build/1st/ppl-1.2/doc/gpl.tex

! LaTeX Error: Can be used only in preamble.

See the LaTeX manual or LaTeX Companion for explanation.
Type  H <return>  for immediate help.
 ...                                              
                                                  
l.1 \documentclass
                  [a4paper,12pt]{article}
? 
! Emergency stop.
 ...                                              
                                                  
l.1 \documentclass
                  [a4paper,12pt]{article}
!  ==> Fatal error occurred, no output PDF file produced!
Transcript written on refman.log.
make[2]: *** [Makefile:6: refman.pdf] Error 1