commit 349fd0808d2a735ed0ebb3dd7d52ee94043abd9d
Author: Benda Xu <heroxbd@gentoo.org>
Date:   Fri Apr 12 22:05:48 2019 +0800

    sys-libs/glibc: python pkg_setup fails during bootstrap.
    
      Glibc-2.29 introduces a new python dependency for building. However,
      during Prefix bootstrap, glibc has to be built before python.  The
      dependency circle is broken by disabling pkg_setup() of
      python-any-r1.eclass.
    
    Package-Manager: Portage-2.3.52, Repoman-2.3.12
    Signed-off-by: Benda Xu <heroxbd@gentoo.org>

diff --git a/sys-libs/glibc/glibc-2.29-r1.ebuild b/sys-libs/glibc/glibc-2.29-r1.ebuild
index 34fad50ec4fa..0f573b29bb82 100644
--- a/sys-libs/glibc/glibc-2.29-r1.ebuild
+++ b/sys-libs/glibc/glibc-2.29-r1.ebuild
@@ -719,6 +719,11 @@ pkg_pretend() {
 	sanity_prechecks
 }
 
+pkg_setup() {
+	[[ -n ${BOOTSTRAP_RAP} ]] && return
+	default
+}
+
 # src_unpack
 
 src_unpack() {