[tex-live] Conflict between luatex/babel/luainputenc

[Benoît RIVET]

The following minimal example

% !TEX TS-program = luaLaTeX
\documentclass{article}
\usepackage[utf8]{luainputenc}
\usepackage[francais]{babel}
\usepackage{lipsum}

\begin{document}

\lipsum[1]

\end{document}

compiled with luaLaTeX gives an error :

This is LuaTeX, Version beta-0.80.0 (TeX Live 2015) (rev 5238) 
 restricted \write18 enabled.
(./zzzzzbug.tex
LaTeX2e <2016/02/01>
Babel <3.9o> and hyphenation patterns for 1 language(s) loaded.
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/size10.clo))
(/usr/local/texlive/2015/texmf-dist/tex/lualatex/luainputenc/luainputenc.sty
(/usr/local/texlive/2015/texmf-dist/tex/generic/oberdiek/ifluatex.sty)
(/usr/local/texlive/2015/texmf-dist/tex/generic/ifxetex/ifxetex.sty)
(/usr/local/texlive/2015/texmf-dist/tex/luatex/luatexbase/luatexbase.sty
(/usr/local/texlive/2015/texmf-dist/tex/luatex/ctablestack/ctablestack.sty))
(/usr/local/texlive/2015/texmf-dist/tex/lualatex/luainputenc/lutf8.def
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/t1enc.dfu)
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/ot1enc.dfu)
(/usr/local/texlive/2015/texmf-dist/tex/latex/base/omsenc.dfu)))
(/usr/local/texlive/2015/texmf-dist/tex/generic/babel/babel.sty
(/usr/local/texlive/2015/texmf-dist/tex/generic/babel-french/frenchb.ldf
(/usr/local/texlive/2015/texmf-dist/tex/generic/babel/babel.def
(/usr/local/texlive/2015/texmf-dist/tex/generic/babel/luababel.def))
(/usr/local/texlive/2015/texmf-dist/tex/generic/hyph-utf8/loadhyph/loadhyph-fr.
tex UTF-8 French hyphenation patterns (V2.12, 2002/12/11)
(/usr/local/texlive/2015/texmf-dist/tex/generic/hyph-utf8/patterns/tex/hyph-fr.
tex
! Conflicting pattern ignored.
l.1400 }

This is quite recent, since I use the TexLive Manager on a regular basis and the bug happened after updating last week. The bug disappears when changing the package order (therefore it may prove harmless for the user), and is not specific to the langage given as an option for babel (the very same bug happens for [german] for example).

-- 
Benoît RIVET