dev-python/fontMath: export version for setuptools_scm

Closes: https://bugs.gentoo.org/799029
Package-Manager: Portage-3.0.20, Repoman-3.0.3
Signed-off-by: Alessandro Barbieri <lssndrbarbieri@gmail.com>

dev-python/fontMath/fontMath-0.8.1.ebuild

@@ -21,3 +21,7 @@ RDEPEND="
 DEPEND="${RDEPEND}"
 
 distutils_enable_tests pytest
+
+pkg_setup() {
+	export SETUPTOOLS_SCM_PRETEND_VERSION="${PV%_*}"
+}