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andersonbcdefg

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github_issues_markdown

like 1

ERROR: type should be string, got "\n\nhttps://flutter.io/setup-windows/#clone-the-repo currently recommends to add\nflutter to the `PATH` with the following command:\n\n \n \n setx PATH \"%PATH%;<cd>\\flutter\\bin\"\n\nThis is problematic because it messes up the `PATH` in a bad way (and the\nresult differs depending on if the command is executed in PowerShell or CMD):\n\nIn CMD, the first `PATH` in the command references to the _user_ PATH while\nthe second instance (`%PATH%`) is expanded (by CMD) to the _combination_ of\nuser and system PATH. Essentially, this means that the command copies the\nsystem PATH into the user PATH and stores system+user PATH in the user PATH\nvariable. This leads to duplication (some values are now present in system and\nuser path) and it is also likely that the new user path will now be larger\nthan the max length for env variables (1024 characters). This causes the PATH\nto get silently truncated (bad! some values that were in the PATH will get\nlost!).\n\nIn PowerShell it fails in a different way: The first `PATH` in the command\nstill references to the _user_ PATH. However, PowerShell does not expand\n`%PATH%` to anything and just writes the string `%PATH%;<cd>\\flutter\\bin`\nverbatim into the user PATH variable overwriting whatever used to be in the\nuser PATH variable. The old values of the user path are lost!\n\nWhat's the solution?\n\nUnfortunately, there is no easy build-in way to append anything to the user\nPATH from CMD or PowerShell. Here are our options:\n\n * We could redirect users to the Windows GUI for editing the PATH variable: \n * Control Panel > User Accounts > User Accounts > Change my environment variables\n * Under \"User variables\" add a PATH user variable with the full path to `flutter\\bin` as value. Or, if a variable with that name already exists, add the full path to `flutter\\bin` to it separated by `;`.\n * We could provide a script to modify the PATH variable directly in the registry. Example for CMD: \n * `for /f \"skip=2 tokens=3*\" %a in ('reg query HKCU\\Environment /v PATH') do @if [%b]==[] ( @setx PATH \"<path to flutter\\bin>;%~a\" ) else ( @setx PATH \"<path to flutter\\bin>;%~a %~b\" )`\n * scary command\n * only works in CMD, would have to provide alternatives for other shells (e.g. PowerShell, etc)\n * We could ask users to modify the PATH for the current session only: \n * in CMD: `set PATH=C:\\src\\flutter\\bin;%PATH%`\n * in PowerShell: `$env:path=\"C:\\sdfsdf sdf\\bin;$env:path\"`\n * PATH modification is not permanent, lost when current shell window is closed\n * need to provide different commands for different shells\n\nGiven that the first option is going to be the only one that will work\nindependent of what shell is used, I'd vote for changing the documentation to\nthat one.\n\n"