We need to have USE=static-libs because this package install '.a' files:
*tinyscheme-1.41 (11 Dec 2013)
11 Dec 2013; Panagiotis Christopoulos <firstname.lastname@example.org>
Bump to 1.41 contains various fixes for bug #334649, bug #455294, bug
#455296, bug #455298, bug #455300 and bug #493694, thanks to Agostino Sarubbo
(ago at gentoo dot org) for reporting the QA issues. Special thanks to
Michael Mair-Keimberger (iamnr3) who made the patches in bug #455296. Prefix
(darwin) keywords dropped cause logic inside the ebuild has changed and the
ebuild needs rekeywording.
I'll close this when 1.41 is stabilized, removing old versions.