env, ci: add better CI diagnosis via is_manageable/0 for when sdkmanager is broken
#582
| Job | Run time |
|---|---|
| 8m 33s | |
| 8m 33s |
is_manageable/0 for when sdkmanager is broken
#582
| Job | Run time |
|---|---|
| 8m 33s | |
| 8m 33s |