Cannot flutter create when offline #96286
Description
Without flag
Repro steps
-
Download a stable macOS build from the releases page: https://docs.flutter.dev/development/tools/sdk/releases
-
Go offline (turn off wifi and anyther other network connection)
-
Extract the downloaded zip (e.g. ~/tmp/flutter)
-
Open a terminal, and run
~/tmp/flutter/bin/flutter create app1
Actual result
The command hangs:
mit-macbookpro4:tmp mit$ ./flutter/bin/flutter create app2
Running "flutter pub get" in flutter_tools... ⢿
If you run it with verbose, you can see it's failing trying to get to pub:
https://gist.github.com/mit-mit/17d8f6c21f8970fb6b9dba9e0f24c4cb
Expected result
The command doesn't hang. We should probably detect that we're offline and pass the --offline flag? Looks like that might be tracked in #15717
With flag
Repro steps
-
Download a stable macOS build from the releases page: https://docs.flutter.dev/development/tools/sdk/releases
-
Go offline (turn off wifi and anyther other network connection)
-
Extract the downloaded zip (e.g. ~/tmp/flutter)
-
Open a terminal, and run
~/tmp/flutter/bin/flutter create --offline app1
Actual result
The command fails trying to download some pub packages (full log file):
mit-macbookpro4:tmp mit$ ./flutter/bin/flutter --verbose create --offline foobar
...
[ +105 ms] MSG : Resolving dependencies...
[ +76 ms] SLVR: fact: flutter_tools is 0.0.0
...
[ +175 ms] MSG : Resolving dependencies...
...
[ ] SLVR: fact: flutter_tools depends on test 1.17.12
...
[ +13 ms] IO : Get versions from https://pub.dartlang.org/api/packages/test.
[ +18 ms] IO : HTTP GET https://pub.dartlang.org/api/packages/test
[ ] | Accept: application/vnd.pub.v2+json
[ ] | X-Pub-OS: macos
[ ] | X-Pub-Command: get
[ ] | X-Pub-Session-ID: DDBCDF1B-745B-4417-B0A9-ABE58D1EF131
[ ] | X-Pub-Environment: flutter_cli:get
[ ] | user-agent: Dart pub 2.15.1
[ +91 ms] IO : HTTP error:
[ ] | SocketException: Failed host lookup: 'pub.dartlang.org' (OS Error: nodename nor servname provided, or not known, errno = 8)
Expected result
The command doesn't hang.
Are the dependencies of the flutter tool not expected to be pre-populated into the cache? It looks like it doesn't have test 1.17.2:
mit-macbookpro4:pub.dartlang.org mit$ pwd
/Users/mit/tmp/flutter/.pub-cache/hosted/pub.dartlang.org
mit-macbookpro4:pub.dartlang.org mit$ ls -l | grep test
drwx------@ 7 mit primarygroup 224 Dec 16 20:31 file_testing-3.0.0
drwx------@ 14 mit primarygroup 448 Dec 16 20:31 test-1.17.12
drwx------@ 10 mit primarygroup 320 Dec 16 20:31 test_api-0.4.3
drwx------@ 8 mit primarygroup 256 Dec 16 20:31 test_core-0.4.2