報錯
PS C:\Users\Administrator> flutter pub
Building flutter tool...
Running pub upgrade...
Because flutter_tools depends on built_collection 4.3.2 which doesn't match any versions, version solving failed.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
等待 0 秒，按 CTRL+C 退出 ...
Running pub upgrade...
Because flutter_tools depends on built_collection 4.3.2 which doesn't match any versions, version solving failed.
Error (1): Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (8 tries left)
等待 0 秒，按 CTRL+C 退出 ...
起因
時隔許久給新電腦裝Flutter環境，git clone flutter，配置環境變量
後運行flutter doctor報錯
分析
Flutter 安裝過程中使用了國內鏡像
但是Flutter是拉的官方的git
但是pub鏡像沒有及時更新，導致flutter_tools 的依賴找不到最新的版本
解決方法
暫時刪除PUB_HOSTED_URL
使用代理setx https_proxy 127.0.0.1:1080
或者
查看下最後Sync時間
PUB_HOSTED_URL更換其他鏡像
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