[MacPorts] #74410: mos, mos-devel, leaf, gomodctl: build fails on go:linkname

[MacPorts]

#74410: mos, mos-devel, leaf, gomodctl: build fails on go:linkname
----------------------+-----------------------------------------
 Reporter:  jrjsmrtn  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.12.6
 Keywords:            |       Port:  mos mos-devel leaf gomodctl
----------------------+-----------------------------------------
 Go tightened the rules for //go:linkname, and a vendored golang.org/x/sys
 predating that no longer compiles.

 {{{
 ../../../golang.org/x/sys/unix/syscall_darwin.1_13.go:25:3: //go:linkname
 must refer to declared function or variable
 ../../../golang.org/x/sys/unix/zsyscall_darwin_arm64.go:105:3:
 //go:linkname must refer to declared function or variable
 }}}

 Reproduced with go 1.27.1 on macOS 26.6.2 arm64. The pinned refs are:

 {{{
 mos, mos-devel   5c8b2ff67527
 leaf             d5e6a3e2c0ae
 gomodctl         f84b799fce68
 }}}

 All four also vendor projects that have since moved to a new GitHub owner,
 so
 they fail at checksum before ever reaching the build. That part is fixed
 for
 the ports that do build in
 https://github.com/macports/macports-ports/pull/34580, which leaves these
 four
 out precisely because a checksum change does not help them: they need
 golang.org/x/sys bumped to a version that compiles.

 kubeval fails the same way and is already covered by #72088. please also
 fails
 to build, but in gopsutil's cgo rather than here; its checksum half is
 #72874.

-- 
Ticket URL: <https://trac.macports.org/ticket/74410>
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