more permantent link to the diff: https://www.zq1.de/~bernhard/linux/reproducibleopensuse/compare.factory-20170110/exo-compare.out If it is really a race, there are at least two approaches to solve this: either intltool-merge could use filesystem locking and/or checksums so that readers wait until a writer finished and then many readers can read in parallel or you re-design makefiles to have a first "create cache" step and all later translation-merge steps depend on that one to be finished. But that probably needs us update multiple (even future) packages' Makefiles so I guess the first approach is the cleaner one.