Why does the Citrix Workspace installer fail on macOS 15 (Catalina)? I tried to install Citrix Workspace v2002 on a new MacBook Air running macOS 15 Catalina. I think the owner of the computer had used Migration Assistant from an old MacBook Air running a significantly older OS.

The installer failed without a user-facing explanation. Other versions of Citrix Workspace and Citrix Receiver also failed to install.

Has anyone else experienced this?
The installer log view showed that a File Not Found error was occurring in /private/tmp.

Inspecting directly, /tmp was a symlink to /private/tmp, which itself was a symlink to private/tmp, that is to say /private/private/tmp! This target did not exist. The erroneous symlink had a modification date in 2016, which made me suspect a problem relating to Migration Assistant.

I think System Integrity Protection was preventing me from modifying /private/tmp, even as sudo and with System Preferences > Security &amp; Privacy > Full Disk Access granted to Terminal.app . I didn't really want to disable it.

In the end I just created the missing target sudo mkdir -p /private/private/tmp and the installer worked.

It'd be nice to know how the erroneous symlink came into existence. The Migration Assistant theory is just a theory at this stage.

addit

Problem recurred while upgrading to macOS 10.15.4 (presenting with An error occurred while updating firmware.). Booted into recovery mode and inspected /Volumes/Macintosh HD/private/ to find that my ./private/tmp directory wasn't there any more. SIP seemed to be off so I could just remove the ./tmp symlink and create a real ./tmp directory. Then upgrade worked!

Hopefully this will be a more durable fix.