Generate dummy C input in Zig#2804
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Empty selected-module sets still need a C compilation unit so Zig can produce an ActonProject artifact for a dependency. The previous fallback wrote out/types/acton_empty.c as a build-script side effect, then passed it back to Zig as an ordinary source path. That path has no Acton source module and no Zig producer step, so a stale or pruned copy can disappear before Zig hashes the input. Use addWriteFiles to make the fallback a generated Zig input instead. The dummy file is now produced by the Zig build graph and is no longer materialized in dependency out/types.
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Empty selected-module sets still need a C compilation unit so Zig can produce an ActonProject artifact for a dependency.
The previous fallback wrote
out/types/acton_empty.cas a build-script side effect, then passed it back to Zig as an ordinary source path. That path has no Acton source module and no Zig producer step, so a stale or pruned copy can disappear before Zig hashes the input.Use
addWriteFilesto make the fallback a generated Zig input instead. The dummy file is now produced by the Zig build graph and is no longer materialized in dependencyout/types.