One binary for dev, another for prod. Native crypto on Linux, SQLite for CI, embedded React in release builds. No if, just //go:build.
🧩 Real examples:
• Switch DB drivers without touching code
• Debug vs prod logging — cleanly
• Shrink binaries by excluding unused deps
• Native vs pure-Go crypto with a tag
• Serve UI from memory or proxy from localhost
✨ Your Go project in 2025 should shape-shift — this is how:
https://levelup.gitconnected.com/build-once-run-anywhere-go-tag-tricks-for-2025-projects-23c3345df058
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