... I spent most of the day trying yo get drizzlepac to build, with a lot of help with Megan. It builds now, but still fails most of its tests. ... I finished writing calc_pixmap, which creates an image mapping the pixels of one image into another and then wrote the first test case, which I am trying to get to run. ... I have finished the first set of unit tests and am trying to get them to build. ... I wrote the C and Python code to wrap the unit tests and the Python test case to invoke it. ...