Cannot build on a machine with powershell 7

[DinoChiesa]

Describe the bug

The build command presumes that a back-version of powershell is installed. If only powershell 7 is available, the build will fail.

To Reproduce

On a machine that has only powershell 7 installed, run .\eng\common\build.ps1 -restore -build.

PS C:\Users\xyz\dev\dotnet\yarp-reverse-proxy> $PSVersionTable.PSVersion

Major  Minor  Patch  PreReleaseLabel BuildLabel
-----  -----  -----  --------------- ----------
7      3      3

PS C:\Users\xyz\dev\dotnet\yarp-reverse-proxy> .\eng\common\build.ps1 -restore -build
  Determining projects to restore...
  All projects are up-to-date for restore.
'powershell' is not recognized as an internal or external command,
operable program or batch file.
C:\Users\xyz\.nuget\packages\microsoft.dotnet.arcade.sdk\7.0.0-beta.22426.8\tools\InstallDotNetCore.targets(15,5): error : dotnet-install failed [C:\Users\dpchi\.nuget\packages\microsoft.dotnet.ar
cade.sdk\7.0.0-beta.22426.8\tools\Tools.proj]
'powershell' is not recognized as an internal or external command,
operable program or batch file.

Further technical details

• powershell 7
• Windows 10
• current main of reverse-proxy
• SDK 7.0.104

[MihaZupan]

Is powershell available on your PATH? If not, can you try adding it (likely %SYSTEMROOT%\System32\WindowsPowerShell\v1.0\)?

[samsp-msft]

Closing due to no-response. Please follow @MihaZupan 's instructions and reactivate if its still an problem.