Flutter's local .pub-cache doesn't interact well with separate Dart install #37481

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1. gspencergoog commented on Aug 2, 2019

   

   gspencergoog

   on Aug 2, 2019

   Last edited by gspencergoog

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   Just to explain why why we have the cache:
   The pre-populated cache serves several purposes:

   1. People can just run flutter run and it will work right out of the box, with no extra downloading.
   2. People who download flutter when they have a fast connection, but try to use it the first time without a connection, or with a slow one, aren't disappointed (the airport problem), and
   3. People in other parts of the world without access to the pub server (i.e. China) can download our package and use it instead of being stopped by not being able to access the server.

   Ideally, we'd do some magic behind the scenes to merge that cache with the user's cache on first run or something. Even more ideally, we'd have a "real" installer, and be able to just install stuff into the user's cache in the first place.

   Another option would be to have pub look in multiple caches (via some sort of PUB_CACHE_PATH var or something), and then we could set it in the flutter tool to look in the user's cache first and the pre-populated one second.
2. gspencergoog

   added

   toolAffects the "flutter" command-line tool. See also t: labels.Affects the "flutter" command-line tool. See also t: labels.

   on Aug 2, 2019
3. Hixie commented on Aug 2, 2019

   

   Hixie

   on Aug 2, 2019

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   How does pub determine which cache to use?
4. Hixie

   added this to the GoalsThis milestone has been deleted milestone on Aug 2, 2019
5. gspencergoog commented on Aug 2, 2019

   

   gspencergoog

   on Aug 2, 2019

   Last edited by gspencergoog

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   Via the PUB_CACHE environment variable, and defaults to ~/.pub-cache. We set PUB_CACHE inside of the flutter tool if we notice that the flutter directory has a .pub-cache.

   The workaround for this issue is to have people delete the flutter directory's .pub-cache and just use theirs.
6. zanderso

   added

   a: first hourThe first hour of using FlutterThe first hour of using Flutter

   on Aug 23, 2019
7. kf6gpe

   added

   P2Important issues not at the top of the work listImportant issues not at the top of the work list

   on May 29, 2020
8. Hixie

   removed this from the None.This milestone has been deleted milestone on Aug 17, 2020
9. sigurdm

   closed this as completedin #121802on Mar 13, 2023
10. github-actions commented on Mar 27, 2023

    

    github-actionsbot

    on Mar 27, 2023

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    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.
11. github-actions

    locked as resolved and limited conversation to collaborators on Mar 27, 2023