fluid-let was proposed in SRFI-15 but withdrawn, so not every
implementation advertises it, although many do support it.
| Scheme | fluid-let support |
|---|---|
| Bigloo | no |
| Chez | built-in |
| Chicken | needs (require (srfi 15)) |
| Chibi | no |
| Gambit | no |
| Gauche | built-in |
| Guile | no |
| Kawa | built-in |
| Loko | through Akku |
| MIT | built-in |
| Sagittarius | no |
| STklos | built-in |
| Racket | no |