New suite src/tests/modules/punk/libunknown/testsuites/shadowing/
(7 tests, all pass) pins the .tm same-version shadowing rules verified
experimentally 2026-07-06/07: tcl:™️:add PREPENDS each argument (last
arg ends at the head of tcl:™️:list); the head of tcl:™️:list wins
exact-version ties (single and separate add calls); a higher version
wins from any position (order only arbitrates exact ties); and
punk::libunknown preserves all of it (scanner parity). Shipped behaviour
depends on these rules - the runtests testinterp tm ordering (bootsupport
over vendormodules) and punk_main''s package-mode block precedence that
G-033''s proj:/kit-first design builds on - so a Tcl or libunknown change
that shifts the tie-break now goes red here instead of silently
mis-resolving.
Goal G-035 (proposed): characterise mixed .tm / pkgIndex.tcl provision of
the same package - same or differing versions, under standard package
unknown, punk::libunknown and punk::packagepreference, across
scan-trigger orderings, forget/re-require crossing forms, and 8.6/9.
Converts the standing informal rule ("avoid mixing provision forms for
one package - unexpected behaviour even with libunknown''s improvements")
from folklore into either substantiated AGENTS.md guidance with named
failure modes, or retirement if mixing proves predictable. Discovery
work, so goal-specified rather than written now; extends the shadowing
suite when implemented.
Assisted-by: harness=claude; primary-model=claude-fable-5; api-location=anthropic.com
Julian Noble