fix(nextjs): Print unsupported Turbopack warning once - #24053
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Co-Authored-By: OpenAI Codex <codex@openai.com>
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Hi, looks good! Thanks for the contribution.
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This PR adds the external contributor to the CHANGELOG.md file, so that they are credited for their contribution. See #24053 Co-authored-by: andreiborza <168741329+andreiborza@users.noreply.github.com>
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The unsupported-Turbopack compatibility warning now appears once per Next.js command instead of once per config evaluation. This keeps the warning useful without repeating it as Next.js evaluates configuration in workers.
Root cause
Each config evaluation logged the warning independently. A process-scoped environment marker was chosen so child processes inherit the emitted state, while a new command starts cleanly without stale temporary files. Silent evaluations do not consume the warning, so a later non-silent evaluation can still surface it.
Fixes #15069