The best answer is “it depends”. Almost any trick a layman can think of to work around a license is probably wrong. A mindless transliteration of those 800 lin

The best answer is “it depends”. Almost any trick a layman can think of to work around a license is probably wrong. A mindless transliteration of those 800 lines is likely a derivative work, whereas a thoughtful re-creation likely isn’t. Copying an API for compatibility is regarded as a derived work but permitted as fair use (Oracle vs Google). There’s also the notion of de minimis copying were a very (very!) small portion of a work is regarded as insubstantial - maybe a line or two, again see Oracle vs Google.