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A genuinely clean rebuild -- rm -rf _build && dune build && dune exec
colitur -- day 2026 -- failed: nothing in the default build graph asked
for data/ef/sanctoral.sexp or adjustments.sexp, only test/dune's cram
stanza did (its own explicit deps), so dune build alone never
materialised them under _build/default/data/ef/, and colitur day
(bin/main.ml's data_dir, which reads them straight off the build tree)
failed to find them. dune build @runtest masked this entirely, and the
test suite could not have caught it on its own: the cram stanza supplies
its own deps regardless of whether anything else in the project needs
them.
Verified empirically that neither a plain (alias (name default) ...) in
data/ef/dune nor one in bin/dune is enough on its own -- bare 'dune
build' resolves to something narrower than either recursive alias
propagation would suggest. A root-level dune file's default alias,
explicitly depending on (alias_rec install) plus the two data files, is
what a genuinely clean rebuild actually needs.
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