nixos/systemd-sysusers: make uid/gid allocation stable #297250

Evaluator Performance Report

stat	before	after	Δ	Δ%
cpuTime	566.24	565.96	↘ 0.28	-0.05%
envs-bytes	17,583,142,976	17,583,142,976	0
envs-elements	930,690,920	930,690,920	0
envs-number	633,600,976	633,600,976	0
gc-heapSize	50,704,912,384	50,721,689,600	↗ 16,777,216	0.03%
gc-totalBytes	112,487,661,952	112,487,676,848	↗ 14,896	0.00%
list-bytes	2,304,134,584	2,304,134,584	0
list-concats	63,631,271	63,631,271	0
list-elements	288,016,823	288,016,823	0
nrAvoided	726,772,795	726,772,795	0
nrFunctionCalls	579,977,009	579,977,009	0
nrLookups	322,930,302	322,930,302	0
nrOpUpdateValuesCopied	1,706,501,448	1,706,501,448	0
nrOpUpdates	80,404,276	80,404,276	0
nrPrimOpCalls	295,463,904	295,463,904	0
nrThunks	936,471,476	936,471,476	0
sets-bytes	38,499,686,624	38,499,686,624	0
sets-elements	2,264,272,441	2,264,272,441	0
sets-number	141,957,973	141,957,973	0
sizes-Attr	16	16	0
sizes-Bindings	16	16	0
sizes-Env	16	16	0
sizes-Value	24	24	0
symbols-bytes	2,317,560	2,317,588	↗ 28	0.00%
symbols-number	166,861	166,864	↗ 3	0.00%
values-bytes	28,804,846,464	28,804,846,464	0
values-number	1,200,201,936	1,200,201,936	0