Undefined GIT_VERSION

Yes, sorry about that. Consequence of ZIP source not being under git control. I’m still trying to figure out how to convey the git-dependent version number to the ZIP file, but if you modify the else in src/bin/psi4/gitversion.py according to below, it will actually build.

def write_version(branch, mmp, ghash, status):
    if ghash:
        version_str = "#define GIT_VERSION \"{%s} %s %s\"\n" % \
                      (branch, ghash, status)
    else:
        version_str = "#define GIT_VERSION \"{%s} %s %s\"\n" % \
                      ('(no tag)', '', '')