[MacPorts] #61545: chez-scheme fails to build on Big Sur (Apple Silicon Mac) due to Python38 dependency

[MacPorts]

#61545: chez-scheme fails to build on Big Sur (Apple Silicon Mac) due to Python38
dependency
----------------------------------+----------------------------------
 Reporter:  Gregory-Gelfond       |      Owner:  (none)
     Type:  defect                |     Status:  new
 Priority:  Normal                |  Milestone:
Component:  ports                 |    Version:  2.6.4
 Keywords:  chez-scheme python38  |       Port:  chez-scheme python38
----------------------------------+----------------------------------
 `sudo port install chez-scheme` yields the following output:

 {{{
 The following dependencies will be installed:
  icu
  libxml2
  python38
  xorg-libX11
  xorg-libpthread-stubs
  xorg-libxcb
  xorg-util-macros
  xorg-xcb-proto
  xorg-xtrans
 Continue? [Y/n]:
 --->  Fetching archive for python38
 --->  Attempting to fetch
 python38-3.8.6_0+universal.darwin_20.arm64-x86_64.tbz2 from
 https://packages.macports.org/python38
 --->  Attempting to fetch
 python38-3.8.6_0+universal.darwin_20.arm64-x86_64.tbz2 from
 https://ywg.ca.packages.macports.org/mirror/macports/packages/python38/python38
 --->  Attempting to fetch
 python38-3.8.6_0+universal.darwin_20.arm64-x86_64.tbz2 from
 https://lil.fr.packages.macports.org/python38
 --->  Fetching distfiles for python38
 --->  Attempting to fetch Python-3.8.6.tar.xz from
 https://distfiles.macports.org/python38
 --->  Verifying checksums for python38
 --->  Extracting python38
 --->  Applying patches to python38
 --->  Configuring python38
 --->  Building python38
 Error: Failed to build python38: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_python38/python38/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port chez-scheme failed
 }}}

 The error appears to be with building python38.

 This is strange since installing python38 with the `+optimizations`
 variant worked fine. Chez-scheme seems to be calling for a universal build
 variant. I am attaching the main.log for reference.

-- 
Ticket URL: <https://trac.macports.org/ticket/61545>
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