[MacPorts] #74419: mos, mos-devel, gomodctl, kubeval, leaf: build fails on an outdated golang.org/x/sys

[MacPorts]

#74419: mos, mos-devel, gomodctl, kubeval, leaf: build fails on an outdated
golang.org/x/sys
----------------------+-------------------------------------------------
 Reporter:  jrjsmrtn  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  mos mos-devel gomodctl kubeval leaf
----------------------+-------------------------------------------------
 These five Go ports fail to build. Each vendors a `golang.org/x/sys`
 revision that current Go toolchains reject:

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

 The buildbot has been failing them for months — mos and mos-devel since
 2026-02-06, gomodctl, kubeval and leaf since 2026-08-26 — on every builder
 (10.6, 13, 13.arm64, 14, 14.arm64, 15, 15.arm64, 26.arm64).

 The pinned revisions, and whether they compile standalone under Go 1.26
 and 1.27 (GOOS=darwin GOARCH=arm64, `go build ./unix/` on a plain
 checkout, no MacPorts involved):

 || '''x/sys revision''' || '''ports''' || '''go1.26''' || '''go1.27''' ||
 || 5c8b2ff67527 || mos, mos-devel || fails || fails ||
 || f84b799fce68 || gomodctl || fails || fails ||
 || d5e6a3e2c0ae || kubeval, leaf || fails || fails ||
 || 41cdb8703e55 || (trojan-go, for contrast) || builds || builds ||

 So this is not a Go 1.27 regression: the pins predate the fix, and the
 failure reproduces without MacPorts. A port pinning a recent enough x/sys,
 such as trojan-go, is unaffected.

 The fix is a `go.vendors` bump of `golang.org/x/sys` in each port, which
 is the maintainers' call since it may interact with their other pinned
 versions.

 Unrelated but adjacent: these five also need renamed-vendor `repo` lines,
 submitted separately as https://github.com/macports/macports-
 ports/pull/34580 and its follow-up. That change is orthogonal to this one
 and will not make them build.

-- 
Ticket URL: <https://trac.macports.org/ticket/74419>
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