--- a/macros.lua	2021-10-01 17:41:04.000000000 +0300
+++ b/macros.lua	2021-10-18 14:23:44.188532741 +0300
@@ -54,6 +54,30 @@
 
     -- find the spec file
     specpath = rpm.expand("%_specfile")
+
+    if posix.stat(specpath, "mode") == nil then
+        specpath = nil
+        local locations = { rpm.expand("%_sourcedir"), rpm.expand("%_specdir"), posix.getcwd(), posix.getcwd() .. "/" .. name }
+        for _,loc in ipairs(locations) do
+            local filename = loc .. "/" .. name .. ".spec"
+            if posix.stat(filename, "mode") ~= nil then
+                specpath = filename
+                break
+            else
+                local filename_candidate = io.popen("ls " .. loc .. "/*.spec"):read("*a"):gsub("%s+$","")
+                for filename in filename_candidate:gmatch("[^\n]+") do
+                    if posix.stat(filename, "mode") ~= nil then
+                        specpath = filename
+                        break
+                    end
+                end
+                if specpath ~= nil then
+                    break
+                end
+            end
+        end
+    end
+
 end
 
 function python_subpackages()