Problems opening Sage binary on MacOS 10.15

[john_perry_usm]

Hello

I recently upgraded to MacOS 10.15. I can get Sage 8.7 to work (more on that in a moment) but Sage 9.1 doesn't.

The first problem is the Apple "quarantine". I found the fix to that (thanks!) but perhaps a note should be added to the download webpage, just as there's a note about MacOS 10.11? I mean this: "On OS X version 10.11 (El Capitan), you need at least sage-6.10. It does not work with older versions of SageMath."

The second problem is that when I start it now, it gives me this error:

$ /Applications/SageMath/sage 

dyld: Library not loaded: /Users/buildbot-sage/slave/binary_pkg/build/source/SageMath/jc4b6yulaujayb9sr94ia88eourzeqip0oidmas3/local/lib/libpython3.7m.dylib

  Referenced from: /Applications/SageMath/local/bin/python3

  Reason: image not found

/Applications/SageMath/src/bin/sage-python: line 2: 46885 Abort trap: 6           sage -python "$@"

I don't know if it's because it seems to be trying to reference "/Users/buildbot", but I have no such link on my system. it seems odd that I'm the only person to report this problem, though.

[Tim McLarnan]

I certainly don't know enough to solve the problem, but I'm running OS X 10.15.6, and I see

$ /Applications/SageMath-9.1.app/sage

┌────────────────────────────────────────────────────────────────────┐

│ SageMath version 9.1, Release Date: 2020-05-20                     │

│ Using Python 3.7.3. Type "help()" for help.                        │

└────────────────────────────────────────────────────────────────────┘

sage: 2+2

4

sage: 

[kcrisman]

I recently upgraded to MacOS 10.15. I can get Sage 8.7 to work (more on that in a moment) but Sage 9.1 doesn't.

The first problem is the Apple "quarantine". I found the fix to that (thanks!) but perhaps a note should be added to the download webpage, just as there's a note about MacOS 10.11? I mean this: "On OS X version 10.11 (El Capitan), you need at least sage-6.10. It does not work with older versions of SageMath."

See https://github.com/sagemath/website/pull/193 - I'm not sure why this has been held up.

 

The second problem is that when I start it now, it gives me this error:

$ /Applications/SageMath/sage 

dyld: Library not loaded: /Users/buildbot-sage/slave/binary_pkg/build/source/SageMath/jc4b6yulaujayb9sr94ia88eourzeqip0oidmas3/local/lib/libpython3.7m.dylib

  Referenced from: /Applications/SageMath/local/bin/python3

  Reason: image not found

/Applications/SageMath/src/bin/sage-python: line 2: 46885 Abort trap: 6           sage -python "$@"

I wonder (though obviously the path looks grim) if that is a sign you don't actually have Python 3 on your system.  Is that correct?  I did create some py2 binaries but apparently they didn't make it to the servers - though those were only for 10.11, so probably not optimal for your 10.15 machine (which one would think has py3, so probably it's something else).

[john_perry_usm]

OK, the problem seems to have been quarantine; as in, I knew I needed to remove the quarantine bit on 8.7, but I didn't realize that I had to remove it on 9.1 as well.

At least, I think that's what went wrong. Here's what I did:

• Removed the old (nonworking) SageMath 9.1.
  
• Re-mounted the dmg.
• Copied the application over to /Applications.
• Executed /Applications/SageMath/sage.
• Lots of messages about something being adjusted.
• Crash, no reason given.
• I look in a script file and try to run /Applications/sage -python and get a message that python3.7 has a security issue.
• I run the command:

xattr -dr com.apple.quarantine ../SageMath

• Now it works.

My misunderstanding was in thinking that the quarantine issue was resolved by 9.1. I think that's my fault, and not a bug.

[john_perry_usm]

On Friday, August 7, 2020 at 12:45:23 PM UTC-5, kcrisman wrote:

The first problem is the Apple "quarantine". I found the fix to that (thanks!) but perhaps a note should be added to the download webpage, just as there's a note about MacOS 10.11? I mean this: "On OS X version 10.11 (El Capitan), you need at least sage-6.10. It does not work with older versions of SageMath."

See https://github.com/sagemath/website/pull/193 - I'm not sure why this has been held up.

I might be misreading things, but Harald still has the "Do not merge" tag because your patch's href still has no reference:

see <a href="">these instructions if you have difficulties.

The second problem is that when I start it now, it gives me this error:

$ /Applications/SageMath/sage 

dyld: Library not loaded: /Users/buildbot-sage/slave/binary_pkg/build/source/SageMath/jc4b6yulaujayb9sr94ia88eourzeqip0oidmas3/local/lib/libpython3.7m.dylib

  Referenced from: /Applications/SageMath/local/bin/python3

  Reason: image not found

/Applications/SageMath/src/bin/sage-python: line 2: 46885 Abort trap: 6           sage -python "$@"

I wonder (though obviously the path looks grim) if that is a sign you don't actually have Python 3 on your system.  Is that correct?

I don't. They're included with sage, but as I noted above, the quarantine was obstructing them. The abort message had confused me.

[john_perry_usm]

Thanks to everyone for the help, BTW.

[kcrisman]

Glad you were able to fix this!

See https://github.com/sagemath/website/pull/193 - I'm not sure why this has been held up.

I might be misreading things, but Harald still has the "Do not merge" tag because your patch's href still has no reference:

I fixed that in the second commit a while ago.  There is still even more to be done, but in files not in the public repo, which are needless to say more time-consuming to figure out.