Is there a name for that? It's like picking oneself by one's bootstraps.
But anyway, I have been writing a bunch of little PyQt projects in the last year or so, and they all seem to share something with each other.
Writing KrSN, I worked on making a pseudo/browser using QTextBroser... which is the note-displaying element in Notty... which now is getting a reStructuredText editor... which will be used in Bartleblog... for which I learned how to use XMLRPC.. which I will use to write a Notty server... and so on.
Of course, since I am doing all this as a hobby, a reasonable release of all these apps is still months in the future (KRsN is usable, although incomplete, Notty will probably be out in a decent shape first), but I am only coding for fun, any use anyone gets of it is strictly a happy side-effect, so... it's amusing in its own terms.