---
 sys-devel/clang/clang-4.0.1.ebuild    | 12 ++++++++++++
 sys-devel/clang/clang-5.0.9999.ebuild | 12 ++++++++++++
 sys-devel/clang/clang-9999.ebuild     | 12 ++++++++++++
 3 files changed, 36 insertions(+)

changes in v2: do not apply magic when ROOT!=/

diff --git a/sys-devel/clang/clang-4.0.1.ebuild 
b/sys-devel/clang/clang-4.0.1.ebuild
index 21a5adf2696c..821cae0ab5b8 100644
--- a/sys-devel/clang/clang-4.0.1.ebuild
+++ b/sys-devel/clang/clang-4.0.1.ebuild
@@ -276,3 +276,15 @@ multilib_src_install_all() {
        # +x for some reason; TODO: investigate
        use static-analyzer && fperms a-x 
"/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
 }
+
+pkg_postinst() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow update all
+       fi
+}
+
+pkg_postrm() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow clean all
+       fi
+}
diff --git a/sys-devel/clang/clang-5.0.9999.ebuild 
b/sys-devel/clang/clang-5.0.9999.ebuild
index 2ecd222748d1..54f8aaa20cf6 100644
--- a/sys-devel/clang/clang-5.0.9999.ebuild
+++ b/sys-devel/clang/clang-5.0.9999.ebuild
@@ -273,3 +273,15 @@ multilib_src_install_all() {
        # +x for some reason; TODO: investigate
        use static-analyzer && fperms a-x 
"/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
 }
+
+pkg_postinst() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow update all
+       fi
+}
+
+pkg_postrm() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow clean all
+       fi
+}
diff --git a/sys-devel/clang/clang-9999.ebuild 
b/sys-devel/clang/clang-9999.ebuild
index 8dd135d6aa25..010df120d1d5 100644
--- a/sys-devel/clang/clang-9999.ebuild
+++ b/sys-devel/clang/clang-9999.ebuild
@@ -277,3 +277,15 @@ multilib_src_install_all() {
        # +x for some reason; TODO: investigate
        use static-analyzer && fperms a-x 
"/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
 }
+
+pkg_postinst() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow update all
+       fi
+}
+
+pkg_postrm() {
+       if [[ ${ROOT} == / && -f 
${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
+               eselect compiler-shadow clean all
+       fi
+}
-- 
2.14.1


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