tasks/extract_tex:
mkdir -p build/tex
cd build/tex; wget -N http://www.math.uni.wroc.pl/~hebisch/tex_p/tex.web
- cd build/tex; wget -N http://www.math.uni.wroc.pl/~hebisch/tex_p/tex.ch
+# cd build/tex; wget -N http://www.math.uni.wroc.pl/~hebisch/tex_p/tex.ch
+ cd build/tex; wget -N http://www.tug.org/tex-archive/systems/knuth/local/tex/initex.ch && mv initex.ch tex.ch
cd build/tex; wget -N http://www.gnu-pascal.de/crystal/gpc/en/attachments/5593/tangle.p.gz && gunzip tangle.p.gz
touch $@