--- a/PKGBUILD	2018-03-22 10:12:40.652754176 +0100
+++ b/PKGBUILD	2018-03-22 10:20:47.385128228 +0100
@@ -20,6 +20,8 @@ validpgpkeys=('3D2554F0A15338AB9AF1BB9D9
 
 prepare() {
   cd ${pkgname}-${pkgver}
+  # workaround for glibc-2.27 issues
+  sed -i '211,217 d; 219,229 d; 232 d' glob/glob.c
   patch -p1 -i ${srcdir}/guile-2.2.patch
   autoreconf -fi
 }
@@ -32,6 +34,7 @@ build() {
 
 check() {
   cd ${pkgname}-${pkgver}
+  export PERL_USE_UNSAFE_INC=1
   make -k check
 }