[Sunrisepeak]

Draft. This PR collects mcpp 2026.11.8.1; the items still open are listed at the end.

In this PR

• mcpp.lock: an entry's targets change with the commands that ran, not with the resolution #903. The lock's targets change only with the configurations a command plans. A partial workspace build no longer treats the request as the plan scope.
• Manifests: mcpp's own dependencies in the recommended form (identity keys, one table, exact versions) #904. mcpp's own manifests use one [dependencies] table of identity keys with exact versions. A quoted dotted dependency key is now the deprecated reading quoted-dotted-dependency-key (since 2026.11.8.1, removed from 2027.2): the build warns and names the unquoted key, and mcpp why compat lists the use. examples/02-with-deps uses the recommended form.
• S4. The source check rejects conditional directives and macro definitions outside the system lock files, as it already rejected #include.
• A workspace's target/ is 25 GB for one configuration (bin/ is 14× obj/: test binaries, member archives and staged .so copy the closure; nothing collects generated or nested build-program trees), and mcpp test --workspace recompiles most of the graph once per member #874.
  • prune and gc (--older-than) collect std module entries;
  • the low-space warning's threshold is max(2 GiB, 1.25 × what the configuration's last build wrote);
  • [build] target_budget keeps target/ within a size.
• Self-ignoring state. <project>/.mcpp/ gets a .gitignore of *.
• S1.
  • Both *-openkal rows are verified. Test 1033 builds both rows and runs the image of the host's architecture with the platform's layers. tests/e2e/host-requirements.tsv requires it to pass on Linux, macOS and Windows (enforced by check_e2e_coverage.py). Before this, mcpp's own CI ran images on Linux only.
  • docs/24 and docs/35 describe the two roles (release form, build target).

Tests

New e2e tests: 1027–1033. Each passes with this branch's binary, and 1027–1030 and 1032 fail with 2026.11.7.2.

Still to come in this PR

• S7: the protocol runner, mcpp.core context injection and the build-graph query.
• mcpp new's mtest template (after mtest 0.1.0).
• A workspace's target/ is 25 GB for one configuration (bin/ is 14× obj/: test binaries, member archives and staged .so copy the closure; nothing collects generated or nested build-program trees), and mcpp test --workspace recompiles most of the graph once per member #874 re-measurement on the reporter's workspace.
• CHANGELOG, version and the three design documents.