tidy venv usage in install.sh (#18778)
#28427
| Job | Run time |
|---|---|
| 9m 39s | |
| 5m 7s | |
| 8m 21s | |
| 4m 35s | |
| 2m 36s | |
| 2m 38s | |
| 2m 38s | |
| 2m 48s | |
| 2m 31s | |
| 5m 39s | |
| 2m 29s | |
| 2m 39s | |
| 5m 48s | |
| 5m 1s | |
| 5m 50s | |
| 4m 20s | |
| 3m 59s | |
| 3m 57s | |
| 3m 52s | |
| 4m 9s | |
| 1h 28m 36s |