8c2406ff6b0eefd90efd75a6879ce471cd09f1a9
1 Commits
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8c2406ff6b |
runtime: the link set is multi-file — name it once, ship all of it
El SDK CI - dev / build-and-test (pull_request) Failing after 5m39s
el_runtime.c was created 2026-05-03 as an explicitly temporary build shim. It
was deleted that afternoon ("runtime is 100% native El") and restored 25 minutes
later "UNTIL the compiler is updated to emit #include el_seed.h". The `until`
never came. 3.5 months on it is 20,527 lines, and nothing was ever set up to
notice — a file scheduled for deletion gets no owner, no budget, no boundary.
What kept it growing is not inertia, it is an instruction. lang/AGENTS.md said
el_runtime.c "is the authoritative single-file link target ... THIS IS WHERE A
NEW C BUILTIN'S IMPLEMENTATION MUST CURRENTLY LIVE TO BE LINKABLE", and made it
step 1 of the add-a-builtin recipe. That is false. Placement is a link-time
concern: builtin_arity maps NAME -> ARITY INT only, the El name is emitted as
the exact C symbol, and `ld` resolves it — the compiler cannot tell which .c a
symbol came from. `nm lang/dist/platform/elc` on the shipped compiler already
shows T _engram_geo_reify_index_new, T _vindex_insert, T _engram_think,
T _engram_reason_abduce: it is linked from ten translation units today. In a
repo where agents write most of the code, a false instruction in the instruction
file is the forcing function. The file grew because the recipe said to grow it.
The multi-file runtime is therefore already real, and the docs and the
distribution never caught up — which left a live, shipped bug:
* Linking el_runtime.c alone FAILS at `ld` (undefined engram_ground_json,
engram_activate_inner, eg_find_relation, cog_assert_two_axis, ...) because
el_runtime.c #includes six engram headers and calls into all six siblings.
* sdk-release.yaml shipped el_runtime.c/.h + engram_store.c/.h and none of the
other five required .c files, so downstream consumers of the el-runtime-c
Artifact Registry package and of install.sh got a lib/ that cannot link.
* .githooks/pre-commit linked el_runtime.c alone with stderr to /dev/null, so
it reported all 13 native suites as FAILED with the real ld error invisible.
* AGENTS.md's self-host recipe compiled el-compiler/runtime/el_runtime.c — a
path the same file's "DO NOT EDIT" list names as a lagging fork.
The root fix is to stop writing the list down eight times:
* lang/runtime/SOURCES — the canonical link set, in one place, in link order.
* scripts/el-runtime-sources.sh — prints it, optionally prefixed; --check
fails loudly on a missing file, --headers for the shipped headers.
* Every link line in AGENTS.md, lang/AGENTS.md, DESIGN.md, lang/spec/language.md,
the three workflows and the pre-commit hook now reads that one list.
* Adding a concern's .c is one line in SOURCES, so a new builtin no longer has
to be appended to el_runtime.c just because appending was the cheaper edit.
Distribution: ship the siblings rather than amalgamate. Amalgamation needs a new
tool and contradicts DESIGN.md's compile-once-link-many; the siblings are already
independently authored and independently tested (engram/test/*.sh link subsets
directly), and engram_store.c was already shipped, so this completes a mechanism
that existed rather than inventing one. Source is also a superset: a consumer
that wants one file can concatenate, one that wants separate TUs cannot undo an
amalgamation. el-runtime-c/-h stay for backward compatibility; el-runtime-src is
added carrying the complete set plus SOURCES.
lang/AGENTS.md now points new C builtins at the concern-owning .c and states
plainly that the compiler cannot tell which .c a symbol came from, with the nm
evidence. AGENTS.md's "reconcile which is canonical (verify)" note is resolved:
neither file supersedes the other, the canonical unit is the set.
Verified locally (the bar; not CI):
* engram/src/server.el compiles and links against the SOURCES set.
* Compile-once-link-many into libel.a links the same program.
* elb builds from the corrected recipe.
* Self-host fixpoint byte-identical (11,110 lines, stage2 == stage3) built
with the SOURCES-driven link line.
* pre-commit hook: 0 of 13 native suites passing -> 8 of 13.
The 5 still-failing suites are PRE-EXISTING and untouched here: test_fs
(fs_list_json undeclared), test_state (state_has, state_get_or undeclared),
test_json (json_build_array/json_build_object/json_escape_string undefined),
test_time (now_ns undefined), test_env (1 assertion). Builtins registered in
builtin_arity with no implementation or no declaration anywhere — the same
recipe defect, now visible because the linker error is no longer suppressed.
Not attempted: making elc emit #include el_seed.h and dropping elb's hardcoded
runtime path. That is the correct long-term fix and finishes the 2026-05-03
migration, but it touches codegen and self-hosting and belongs in its own change.
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