Gets rid of this build error:
make -C /tmp/nix-build-trace-cmd-2.5.3.drv-0/trace-cmd/Documentation all
ASCIIDOC trace-cmd-hist.1.xsl
*********************************
** No docbook.xsl is installed **
** Can't make man pages **
*********************************
Makefile:59: recipe for target '/tmp/nix-build-trace-cmd-2.5.3.drv-0/trace-cmd/Documentation/trace-cmd-hist.1' failed
