diff --git a/gentoo/emerge-precompile/README.md b/gentoo/emerge-precompile/README.md
index 37fe4da..c9d8f51 100644
--- a/gentoo/emerge-precompile/README.md
+++ b/gentoo/emerge-precompile/README.md
@@ -1,3 +1,5 @@
+### About
+
 Based on idea/code from Sven Vermeulen of Gentoo.
 
 Run in nightly crontab to update packages and precompile them to binary
@@ -5,9 +7,11 @@ ebuilds to save time on install.
 
 To use them in emerge use parameter `-k`, e.g. like `emerge -DNvuak --with-bdeps=yes world`
 
+### precompile.exclude:
 Stuff that makes no sense is exluded like modules and virtual packages.
+Store provided `precompile.exclude` in /etc/eos and extend as needed.
 
 
-Requires 
+### Requires 
 - bash
 - logger
\ No newline at end of file
diff --git a/gentoo/emerge-precompile/precompile.exclude b/gentoo/emerge-precompile/precompile.exclude
new file mode 100644
index 0000000..b98e530
--- /dev/null
+++ b/gentoo/emerge-precompile/precompile.exclude
@@ -0,0 +1,10 @@
+# Packages for exclusion. 
+# Store in /etc/eos
+# Matching is executed with 'start with'
+
+virtual/
+sys-kernel/gentoo-source
+sys-kernel/spl
+sys-fs/zfs
+
+