Z:gnu-www-ja-why-gnu-linux--b84238-When the nonfree =26ldquo;add-on/en

When the nonfree &ldquo;add-on&rdquo; is a library or programming tool, it can become a trap for free software developers. When they write free software that depends on the nonfree package, their software cannot be part of a completely free system. Motif and Qt trapped large amounts of free software in this way in the past, creating problems whose solutions took years. Motif remained somewhat of a problem until it became obsolete and was no longer used. Later, Sun's nonfree Java implementation had a similar effect: the Java Trap, fortunately now mostly corrected.