[MacPorts] #65186: libepoxy @1.5.10 +python39 does not build on PPC Tiger, Mac OS X 10.4.11, because: /opt/local/bin/python3.10: bad interpreter: No such file or directory

[MacPorts]

#65186: libepoxy @1.5.10 +python39 does not build on PPC Tiger,  Mac OS X 10.4.11,
because: /opt/local/bin/python3.10: bad interpreter: No such file or
directory
-----------------------+----------------------
 Reporter:  ballapete  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.7.2
 Keywords:  ppc tiger  |       Port:  libepoxy
-----------------------+----------------------
 {{{
 Executing:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work/build"
 && /opt/local/bin/ninja -j1 -v
 DEBUG: system:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work/build"
 && /opt/local/bin/ninja -j1 -v
 [1/35]
 /opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work
 /anholt-libepoxy-70a20c6/src/gen_dispatch.py --header --no-source
 --outputdir=include/epoxy ../anholt-libepoxy-70a20c6/registry/gl.xml
 FAILED: include/epoxy/gl_generated.h
 /opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work
 /anholt-libepoxy-70a20c6/src/gen_dispatch.py --header --no-source
 --outputdir=include/epoxy ../anholt-libepoxy-70a20c6/registry/gl.xml
 /bin/sh:
 /opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work
 /anholt-libepoxy-70a20c6/src/gen_dispatch.py: /opt/local/bin/python3.10:
 bad interpreter: No such file or directory
 ninja: build stopped: subcommand failed.
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports.org_macports_release_tarballs_ports_graphics_libepoxy/libepoxy/work/build"
 && /opt/local/bin/ninja -j1 -v
 }}}

 Indeed I am on `Python 3.9`, and since so many ports do not support
 `Python 3.10` it makes no sense to install it.

 Obviously `Portfile` is faulty because the `variant python39` does not
 have a line

 {{{
 set python_vers         3.9
 }}}

 which is needed in the `post-patch` clause. Adding it let's
 `gen_dispatch.py` perform its work and build `libepoxy`.

 Besides: What's so wrong with line

 {{{
 #!/usr/bin/env python3
 }}}

 which starts the script `gen_dispatch.py`?

-- 
Ticket URL: <https://trac.macports.org/ticket/65186>
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