Thank you for providing this. Keep that in mind for future.

As it turns out, the solution to installing was incredibly simple:
"brew install sage"

I think this should be mentioned on the "Sage Installation Guide"
as this is a very convenient and standard procedure on Macintosh.

Your mention of "sudo xattr ..." should be mentioned as well
I think.

  Mathieu
On Thursday, 3 December 2020 at 18:10:12 UTC+1 john_perry_usm wrote:

> Have you tried this?
>
>    sudo xattr -r -d com.apple.quarantine <path/to/Sage>
>
> It removes the "quarantine" signal on files. I used it to get Sage running 
> on Catalina. I've had to use this with some other things, too. I learned of 
> it through one of the StackOverflow sites, and it may also be in Sage's 
> documentation somewhere.
>
> john perry
>
> On Wednesday, December 2, 2020 at 12:54:29 PM UTC-6 Mathieu Dutour wrote:
>
>> I would like to install SAGE on a macOS MacBook Pro16 computer.
>>
>> The problem I have is that Sage is killed when trying to install it
>> by the system. The reasons is laudable: Do not run untrusted binaries
>> on a macintosh.
>>
>> But in that case, it makes installation kind of impossible. The reason
>> is that the first binary to be allowed on "Security & Privacy" is 
>> Python3.8
>> If the story stopped here, then that would be perfectly fine. However, 
>> after
>> I allow the Python3.8 I have further libraries to allow and it does not 
>> appear
>> to converge as I keep allowing the same libraries over and over.
>>
>> I tried two ways of installing:
>> 1) Downloading the .tar.bz2 and installing it in my $HOME/opt directory
>> just as I do on Linux.
>> 2) Downloading the .dmg archive and installing sage in /Application 
>> directory.
>> I would have expected that it worked since /Application is a root 
>> directory
>> and not user one. Also the .dmg is a package format so should allow
>> simple authorization scheme.
>>
>> I followed the "Sage Installation Guide. Release 9.2" and unfortunately
>> that problem does not appear to be addressed there.
>>
>>   Mathieu
>>
>

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