General update flow

[danieljurek]

Windows

• Check that there are no other azd.exe processes running (for the specific running azd.exe path) excluding the current executing process ID. If other azd.exe files are running, print a message telling the user to run update when there are no other instances of azd.exe running.
• Detect install configuration. If non-standard, abort and advise the user to install with a per-user configuration in the default install directory. See readme
  • ALLUSERS==2
  • INSTALLDIR=="%LOCALAPPDATA%\Programs\Azure Dev CLI"
• Download aka.ms/install-azd.ps1 and call it with the appropriate params (-Version daily for daily channel -Version stable for stable channel). This process would need to live on past the lifetime of the current running azd.exe.
• Quit immediately so install can finish

Linux/MacOS

Use installed_by.go for figuring out the value of .installed-by.txt

Homebrew

If the .installed-by.txt file has the value brew then we do a homebrew update. Else, update using the install script.

• Execute brew tap azure/azd && brew install azure/azd/azd

This doesn't support the dev channel today. Support for dev channel is incoming.

Install Script

If .installed-by.txt file has the value install-azd.sh

• Download aka.ms/install-azd.sh
• Determine --install-folder dirname where azd binary is
• Run install-azd.sh with --version daily or --version stable and --install-folder and with --symlink-folder="" so that the symlink doesn't get changed (assume the user's environment is set up properly)

Other install methods

If .installed-by.txt on Linux/MacOS is not brew or install-azd.sh, abort and tell the user to install azd using one of the methods supported by azd update.