[Answer]-Error deploying on Heroku (ReportLab)

The problem seems to be caused by the presence of a static Python 2.7 library in /usr/local/lib/libpython2.7.a ; to install Reportlab on Heroku correctly using the python-2.7.7 runtime, I changed the order of the directories enumerated by the __call__ function in the inc_lib_dirs class of Reportlab’s setup.py file as follows:

Original:

class inc_lib_dirs:
    L = None
    I = None
    def __call__(self):
        if self.L is None:
            L = []
            I = []
            if platform == "cygwin":
                aDir(L, os.path.join("/usr/lib", "python%s" % sys.version[:3], "config"))
            elif platform == "darwin":
                # attempt to make sure we pick freetype2 over other versions
                aDir(I, "/sw/include/freetype2")
                aDir(I, "/sw/lib/freetype2/include")
                # fink installation directories
                aDir(L, "/sw/lib")
                aDir(I, "/sw/include")
                # darwin ports installation directories
                aDir(L, "/opt/local/lib")
                aDir(I, "/opt/local/include")
            aDir(I, "/usr/local/include")
            aDir(L, "/usr/local/lib")
            aDir(I, "/usr/include")
            aDir(L, "/usr/lib")
            aDir(I, "/usr/include/freetype2")
            prefix = sysconfig.get_config_var("prefix")
            if prefix:
                aDir(L, pjoin(prefix, "lib"))
                aDir(I, pjoin(prefix, "include"))
            self.L=L
            self.I=I
        return self.I,self.L
inc_lib_dirs=inc_lib_dirs()

Edited:

class inc_lib_dirs:
    L = None
    I = None
    def __call__(self):
        if self.L is None:
            L = []
            I = []
            if platform == "cygwin":
                aDir(L, os.path.join("/usr/lib", "python%s" % sys.version[:3], "config"))
            elif platform == "darwin":
                # attempt to make sure we pick freetype2 over other versions
                aDir(I, "/sw/include/freetype2")
                aDir(I, "/sw/lib/freetype2/include")
                # fink installation directories
                aDir(L, "/sw/lib")
                aDir(I, "/sw/include")
                # darwin ports installation directories
                aDir(L, "/opt/local/lib")
                aDir(I, "/opt/local/include")
            prefix = sysconfig.get_config_var("prefix")
            if prefix:
                aDir(L, pjoin(prefix, "lib"))
                aDir(I, pjoin(prefix, "include"))
            aDir(I, "/usr/local/include")
            aDir(L, "/usr/local/lib")
            aDir(I, "/usr/include")
            aDir(L, "/usr/lib")
            aDir(I, "/usr/include/freetype2")
            self.L=L
            self.I=I
        return self.I,self.L
inc_lib_dirs=inc_lib_dirs()

I’d love to find a cleaner solution to avoid keeping a modified version in my egg repository.