Small refactoring and fixes to opam init on Windows.
#2989
| Job | Run time |
|---|---|
| 5s | |
| 2m 9s | |
| 3m 9s | |
| 2s | |
| 2m 2s | |
| 2m 7s | |
| 14s | |
| 2m 5s | |
| 2m 19s | |
| 31m 10s | |
| 2m 21s | |
| 2m 10s | |
| 2m 9s | |
| 2m 0s | |
| 42m 15s | |
| 49m 40s | |
| 48m 16s | |
| 55m 48s | |
| 52m 22s | |
| 1m 4s | |
| 1m 7s | |
| 5m 19s | |
| 14m 25s | |
| 1m 29s | |
| 2m 15s | |
| 1m 27s | |
| 1m 25s | |
| 5h 30m 54s |