v3: yaml.Node-centric parsing pipeline#882

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ndeloof wants to merge 56 commits into

compose-spec:v3from

ndeloof:v3-yaml-node-refactor

Commits on Jun 1, 2026

internal/node: introduce Layer, SourceContext and tree walker

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internal/node: extract ResolveResetOverride from loader

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internal/node: add NormalizeAliases (unfold + merge-key folding)

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override: add MergeNode operating on yaml.Node trees

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override: add EnforceUnicityNode for yaml.Node sequences

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interpolation: add InterpolateNode with per-scalar lazy lookup

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transform: add CanonicalNode bridging to map-based Canonical

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paths: add ResolveRelativePathsNode with per-scalar WorkingDir

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validation,loader: add ValidateNode and NormalizeNode

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loader,types: add LoadLayer producing yaml.Node-based Layer

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loader: add CollectIncludeLayers producing child Layers

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loader: add ApplyExtendsToLayer for yaml.Node service trees

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loader,internal/node: add LoadV3 orchestrator and ApplyResetPaths

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types: add UnmarshalYAML on scalar-or-list types

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types: add UnmarshalYAML on map-or-list types

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types: add UnmarshalYAML on scalar and option types

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loader,paths: tighten LoadV3 parity with v2 and add differential suite

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loader: extract projectName and enforce non-empty rule in LoadV3

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loader: add ResolveEnvironmentNode for lazy bare-key environment

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loader: widen differential coverage and align LoadV3 with v2 semantics

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Commits on Jun 2, 2026

Commits on Jun 3, 2026