Julia fails to launch without network connectivity #1204
Description
I'm looking at running Julia in a lightly sandboxed environment, and it seems like Juliaup's propensity to check for new versions is making that a bit difficult.
~$ sudo unshare --net --fork --mount-proc $(which julia) -- --project=@ -E 'println(22)'
Checking for new Julia versions
Error: Failed to run `run_command_add` from the `run_command_initial_setup_from_launcher` command.
Caused by:
0: Failed to update versions db.
1: Failed to download current version db version.
2: Failed to download from url `https://julialang-s3.julialang.org/juliaup/RELEASEPREVIEWCHANNELDBVERSION`.
3: error sending request for url (https://julialang-s3.julialang.org/juliaup/RELEASEPREVIEWCHANNELDBVERSION)
4: client error (Connect)
5: dns error: failed to lookup address information: Try again
6: failed to lookup address information: Try again
Error: The Julia launcher failed to figure out which juliaup channel to use.
Linux, Juliaup 1.17.19