GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
This is makeindex, version 2.14 [02-Oct-2002] (kpathsea + Thai support). Scanning style file ./manual.mst................done (16 attributes redefined, 0 ignored). Scanning input file manual.idl....done (18 entries accepted, 0 rejected). Sorting entries....done (83 comparisons). Generating output file manual.ind....done (25 lines written, 0 warnings). Output written in manual.ind. Transcript written in manual.ilg.