[MacPorts] #63806: sbcl @2.1.10 +fancy: Cannot build on macOS 12.0.1 with Xcode 13.1

[MacPorts]

#63806: sbcl @2.1.10 +fancy: Cannot build on macOS 12.0.1 with Xcode 13.1
-----------------------------+--------------------
 Reporter:  foretspaisibles  |      Owner:  (none)
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:
 Keywords:  monterey         |       Port:  sbcl
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 I cannot build sbcl at 2.1.10 on macOS 12.0.1 (Monterey/i386). This is an
 installation migration following the migration guide.

 A first examination of the attached log shows that the build system seems
 to download and run an older (1.2.11) binary version of SBCL, which
 results in a signal 9 (KILL).

 Some rather odd detail is also that SYSINFO lines at the top of the log
 reports i386 as a building architecture, while

 ~~~ shell
 % uname -a
 Darwin MacBook-Pro 21.1.0 Darwin Kernel Version 21.1.0: Wed Oct 13
 17:33:23 PDT 2021; root:xnu-8019.41.5~1/RELEASE_X86_64 x86_64
 ~~~

 shows the expected x86_64 and the build system is also picking a x86_64
 binary for downloading.

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Ticket URL: <https://trac.macports.org/ticket/63806>
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