diff --git a/pythonprerel.attr b/pythonprerel.attr
index 2840766..6dd646a 100644
--- a/pythonprerel.attr
+++ b/pythonprerel.attr
@@ -12,8 +12,7 @@
 
         local version = _pythonprerel_version_cache[path]
         if not version then
-            local buildroot = rpm.expand('%{buildroot}')
-            local ld_library_path = buildroot .. '/usr/lib64:' .. buildroot .. '/usr/lib'
+            local ld_library_path = rpm.expand('%{buildroot}%{_libdir}')
             local cmd = 'LD_LIBRARY_PATH=' .. ld_library_path .. ' ' .. path .. [[ -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}.{0.micro}~{0.releaselevel}{0.serial}'.format(sys.version_info))"]]
             version = io.popen(cmd):read("*a")
             -- Cache the version for future calls
@@ -38,13 +37,11 @@
             _pythonprerel_version_cache = {}
         end
 
-        local buildroot = rpm.expand('%{buildroot}')
-        local python_path = buildroot .. '/usr/bin/python' .. pyver
+        local python_path = '/usr/bin/python' .. pyver
 
         local version = _pythonprerel_version_cache[python_path]
         if not version then
-            local ld_library_path = buildroot .. '/usr/lib64:' .. buildroot .. '/usr/lib'
-            local cmd = 'LD_LIBRARY_PATH=' .. ld_library_path .. ' ' .. python_path .. [[ -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}.{0.micro}~{0.releaselevel}{0.serial}'.format(sys.version_info))"]]
+            local cmd = python_path .. [[ -Esc "import sys; sys.stdout.write('{0.major}.{0.minor}.{0.micro}~{0.releaselevel}{0.serial}'.format(sys.version_info))"]]
             version = io.popen(cmd):read("*a")
             -- Cache the version for future calls
             _pythonprerel_version_cache[python_path] = version
@@ -55,4 +52,4 @@
     end
 }
 
-%__pythonprerel_path ^((/usr/lib(64)?/python[[:digit:]]+\\.[[:digit:]]+/.*\\.so)|(%{_bindir}/python[[:digit:]]+\\.[[:digit:]]+))$
+%__pythonprerel_path ^((/usr/lib(64)?/python[[:digit:]]+\\.[[:digit:]]+/site-packages/.*\\.so)|(%{_bindir}/python[[:digit:]]+\\.[[:digit:]]+))$