The project uses fontbuild, a subproject of Roboto, for parts of the build system. Some glyph outlines from Roboto are also used for placeholder glyphs — glyphs that hasn't been designed yet, to allow using the font even when some glyphs are "missing." (Proper attribution has been given in src/LICENSE for some glyph outlines.txt)
The plan is to eventually "implement" all glyphs and not need any "placeholder" glyph outlines from Roboto. However, getting there might take a year or so.
The project uses
fontbuild, a subproject of Roboto, for parts of the build system. Some glyph outlines from Roboto are also used for placeholder glyphs — glyphs that hasn't been designed yet, to allow using the font even when some glyphs are "missing." (Proper attribution has been given insrc/LICENSE for some glyph outlines.txt)The plan is to eventually "implement" all glyphs and not need any "placeholder" glyph outlines from Roboto. However, getting there might take a year or so.