diff --git a/update-alternatives.changes b/update-alternatives.changes
index 7496393..ce1f6d3 100644
--- a/update-alternatives.changes
+++ b/update-alternatives.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Mar 13 09:15:51 UTC 2019 - Stephan Kulow <coolo@suse.com>
+
+- my attempt to rewrite %post in lua (bsc#1129036)
+
 -------------------------------------------------------------------
 Mon Jan 14 15:49:09 CET 2019 - kukuk@suse.de
 
diff --git a/update-alternatives.spec b/update-alternatives.spec
index b23368a..5b4cf99 100644
--- a/update-alternatives.spec
+++ b/update-alternatives.spec
@@ -31,8 +31,6 @@ BuildRequires:  automake
 BuildRequires:  libtool
 BuildRequires:  ncurses-devel
 BuildRequires:  pkgconfig
-Requires(post): coreutils
-Requires(post): update-alternatives
 Provides:       alternatives = %{version}
 
 %description
@@ -71,18 +69,24 @@ install -pm 0755 utils/%{name} %{buildroot}/%{_sbindir}
 ln -s %{name} %{buildroot}/%{_sbindir}/alternatives
 install -pm 0644 man/%{name}.1 %{buildroot}/%{_mandir}/man1/
 
-%post
-# Migrate to new location
-if [ -d var/lib/rpm/alternatives ]; then
-  echo "migrating update alternatives database to new location"
-  # We proceed even if no alternatives directory exists, such situation
-  # occurs in buildroot environment (we can't buildrequire package
-  # itself).
-  mv -f var/lib/rpm/alternatives/* %{_localstatedir}/lib/alternatives/ || :
-  rmdir var/lib/rpm/alternatives ||:
-fi
-
-touch %{_localstatedir}/log/alternatives.log
+%post -p <lua>
+-- Migrate to new location
+if posix.access('var/lib/rpm/alternatives', 'x') then
+  print("migrating update alternatives database to new location")
+  -- We proceed even if no alternatives directory exists, such situation
+  -- occurs in buildroot environment
+  new_location=rpm.expand('%{_localstatedir}/lib/alternatives/')
+  for i,old_file in pairs(posix.dir("var/lib/rpm/alternatives/")) do
+    print(old_file.."\n")
+    new_file = string.gsub(old_file, "(.*/)(.*)", new_location .. "%2")
+    print(new_file.."\n")
+    os.rename(old_file, new_file)
+  end
+  posix.rmdir('var/lib/rpm/alternatives')
+end
+-- touch file
+new_file = io.open(rpm.expand('%{_localstatedir}/log/alternatives.log'), "w")
+new_file.close()
 
 %files
 %license COPYING