Upgrading to 1.9.0-dev.8 messing up pub and/or .pub-cache

[DartBot]

This issue was originally filed by @yjbanov

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What steps will reproduce the problem?

Upgrade to 1.9.0-dev.8

Observed two different outcomes on two different machines that seemingly stem from the same cause:

Outcome #­1:

$ dartformat

["Wrong script snapshot version" pointing at dart_style; sorry don't have a copy of the exact message but it's just a couple hashes]

Workaround: delete .pub-cache, pub global activate dart_style, pub get

Outcome #­2:

$ pub
Wrong script snapshot version, expected '836a274342f7f88d6b5a9bb59b2649a9' found '8a2822fc14c97914b87335dcea37245f'
255 ~

Workaround: delete .pub-cache, reinstall SDK

[kevmoo]

cc @nex3.
cc @munificent.
Added Area-Pub, Pub-Run, Triaged labels.

[DartBot]

This comment was originally written by @zoechi

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I had this message after each update. activating the package again solved it for me (see also http://stackoverflow.com/questions/28585049/update-all-global-activated-packages) but this seems to be fixed since a few days.

[DartBot]

This comment was originally written by @yjbanov

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The biggest issue is with the second outcome. If you are unable to run pub at all there is no way for you to activating the package.

[nex3]

The first issue is issue #22076; the VM changed its exit code for invalid snapshots and the old binstub scripts are now checking the wrong one. If you run "pub cache repair" it will fix all your activated scripts.

The second issue is nastier. Pub itself should never have an incorrect snapshot version. Can you still reproduce this? What happens if you run "pub --verbose"?

[DartBot]

This comment was originally written by @yjbanov

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More reluctant to try to reproduce than cannot, mainly because I don't want to break my dev environment, but I'll let you know if it happens again during next upgrade.

[DartBot]

This issue has been moved to dart-lang/pub#1251.