&gt; Don&#x27;t know if there is a similar package for Scheme.<p>I have to agree with others in the thread that infix in Lisp&#x2F;Scheme is not the convention, and IMO an awkward fit.  Don&#x27;t recall encountering infix in any published&#x2F;shared code I&#x27;ve seen, it may exist, but to learn Scheme becoming comfortable with s-expr notation is definitely necessary.<p>However, there is <i>SRFI 105</i>[0] which describes &quot;curly infix expressions&quot;.  It&#x27;s implemented in Guile 2.x, possibly available in a few others but evidently not had a lot of uptake among Schemes.<p>[0] <a href="http:&#x2F;&#x2F;srfi.schemers.org&#x2F;srfi-105&#x2F;srfi-105.html" rel="nofollow">http:&#x2F;&#x2F;srfi.schemers.org&#x2F;srfi-105&#x2F;srfi-105.html</a><p>Edit: added URL