The usage of latexmk improves the PDF output, as it re-run xelatex when it detects the need, in order to properly generate indexes and cross-references. As this is not a mandatory requirement, only suggest its addition.
Unified · Split
| @@ -532,6 +532,7 @@ sub check_needs() · 531 unmodified lines | ||
| 532 | 532 | check_program("dot", 1); |
| 533 | 533 | check_program("convert", 1); |
| 534 | 534 | check_program("rsvg-convert", 1) if ($pdf); |
| 535 | + check_program("latexmk", 1) if ($pdf); | |
| 535 | 536 | |
| 536 | 537 | check_distros(); |
| 537 | 538 | |