The synchronized omy.Utils product train

2.0.0-rc.1 is one release candidate for the publishable libraries and analyzers manifested in eng/product-train-manifest.json (see that file's packages array for the exact, current count - it changes as packages join or leave the train; do not hard-code a number here). Directory.Build.props owns the only product-train-wide version property, while eng/product-train-manifest.json explicitly owns package selection, classification, frameworks, platforms, acceptance profiles, published API baselines, and package-specific assets.

The train contains Core; IO; XML; Net; Data; Fonts; Imaging; Geography; Reflection; Mathematics; Expressions.CSyntax; Expressions.VBSyntax; OData; NumberToString; VirtualMachine; DependencyInjection; three non-parser source generators (OData.Generators, IO.Serialization.Generators, DependencyInjection.Generators); and the six-package parser ecosystem (Parser.Source, Parser.Diagnostics, Parser.Antlr4.Common, Parser, Parser.Expressions, and Parser.Generators - itself a fourth source generator, embedded in the "six" count rather than double-counted with the three above). Demonstrations, tests, the VSIX, its worker, generated acceptance consumers, and omy.Utils.Collections are explicitly excluded.

omy.Utils.Collections is not a manifested member of the train: it is listed in the manifest's exclusions array ("classification": "provisional-package") and ships independently at its own literal 0.0.1 instead of ProductTrainVersion - see provisional versioning.

The manifest is authoritative, but publication order is not handwritten. eng/analyze-package-graph.ps1 evaluates ProjectReference items through MSBuild, validates an acyclic graph, and writes the derived order under artifacts/reports.

All candidates are built and packed before inspection. None of the quality-gate scripts publishes a package. The publication workflow only downloads already validated archives, verifies their hashes and remote all-or-none state, and emits a dry-run plan.

Published baselines

NuGet discovery selects 1.2.1 for Core, IO, XML, Net, Data, Fonts, Imaging, Geography, Reflection, Mathematics, DependencyInjection, and the IO/DI generators; 0.0.1 for OData and its generator; and 0.1.0 for VirtualMachine. NumberToString, all parser packages, and the newly-added Expressions.CSyntax/Expressions.VBSyntax were not found on NuGet and therefore establish first candidate baselines. The API gate queries NuGet again and fails rather than silently changing a pinned published baseline. omy.Utils.Collections is outside the train's packages array entirely, so this gate does not run against it at all.