extend automatic serialization support for distinct in Nim 2
#182
| Job | Run time |
|---|---|
| 4m 4s | |
| 6m 42s | |
| 6m 23s | |
| 4m 57s | |
| 7m 37s | |
| 7m 21s | |
| 6m 5s | |
| 6m 3s | |
| 9m 18s | |
| 2m 47s | |
| 3m 42s | |
| 3m 44s | |
| 4m 50s | |
| 7m 11s | |
| 7m 13s | |
| 1h 27m 57s |