If dev-texlive/texlive-latexextra is not installed, this happens during the install phase of xcolor (at least version 2.11): + echo ' * Making documentation: ./xcolor.dtx' * Making documentation: ./xcolor.dtx + read -r + LAST_E_CMD=einfo + return 0 + texi2dvi -q -c --language=latex ./xcolor.dtx + die (I had set +x for debugging) Running the texi2dvi command without -q gives this output: # texi2dvi -c --language=latex ./xcolor.dtx This is pdfTeX, Version 3.1415926-2.4-1.40.13 (TeX Live 2012) restricted \write18 enabled. entering extended mode LaTeX2e <2011/06/27> Babel <v3.8m> and hyphenation patterns for english, dumylang, nohyphenation, lo aded. (/var/tmp/portage/dev-tex/xcolor-2.11/work/xcolor/./xcolor.dtx LaTeX Warning: File `xcolor.ins' already exists on the system. Not generating it from this source. (/usr/share/texmf-dist/tex/latex/base/ltxdoc.cls Document Class: ltxdoc 2007/11/11 v2.0u Standard LaTeX documentation class (/usr/share/texmf-dist/tex/latex/base/article.cls Document Class: article 2007/10/19 v1.4h Standard LaTeX document class (/usr/share/texmf-dist/tex/latex/base/size10.clo)) (/usr/share/texmf-dist/tex/latex/base/doc.sty (/usr/share/texmf-dist/tex/latex/tools/multicol.sty))) (/var/tmp/portage/dev-tex/xcolor-2.11/work/xcolor/xcolor.sty (/usr/share/texmf-dist/tex/latex/latexconfig/color.cfg) (/usr/share/texmf-dist/tex/latex/graphics/dvips.def) (/usr/share/texmf-dist/tex/latex/colortbl/colortbl.sty (/usr/share/texmf-dist/tex/latex/tools/array.sty)) (/usr/share/texmf-dist/tex/latex/graphics/dvipsnam.def)) ! LaTeX Error: File `chngpage.sty' not found. Type X to quit or <RETURN> to proceed, or enter new name. (Default extension: sty) Enter file name: ^C/var/tmp/portage/dev-tex/xcolor-2.11/work/xcolor/./xcolor.dtx:105: Interruption . <to be read again> } l.105 \usepackage ^^M ? chngpage.sty is provided by dev-texlive/texlive-latexextra. But I can not install that since it, in turn, depends on xcolor. As a result, we have a circular dependency.
*** This bug has been marked as a duplicate of bug 573530 ***