The LaTeX Team submitted the
luatex-def
package.
Version: 0.01a 2015-12-30 License: lppl1.3
Summary description: LuaTeX option file for color and graphics
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First version of luatex.def, a modified version of pdftex.def.
This is only needed for luatex releases from 0.87 on: it will not work with the version 0.80 in current texlive and miktex distributions but is being made available for testing.
If you have a test version of luatex 0.88 you may use this file via usepackage[luatex]{graphicx}
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The package's Catalogue entry can be viewed at http://www.ctan.org/pkg/luatex-def
The package's files themselves can be inspected at http://mirror.ctan.org/macros/luatex/latex/luatex-def/
We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
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Thanks for the upload.
For the CTAN Team Petra Rübe-Pugliese