def finalize_options()

in setup.py [0:0]

• 19 lines of code
• 15 McCabe index (conditional complexity)

    def finalize_options(self):
        # This requires some explanation.  Basically what we want to do
        # here is to control if we want to build in-place or into the
        # build-lib folder.  Traditionally this is set by the `inplace`
        # command line flag for build_ext.  However as we are a subcommand
        # we need to grab this information from elsewhere.
        #
        # An in-place build puts the files generated into the source
        # folder, a regular build puts the files into the build-lib
        # folder.
        #
        # The following situations we need to cover:
        #
        #   command                         default in-place
        #   setup.py build_js               0
        #   setup.py build_ext              value of in-place for build_ext
        #   setup.py build_ext --inplace    1
        #   pip install --editable .        1
        #   setup.py install                0
        #   setup.py sdist                  0
        #   setup.py bdist_wheel            0
        #
        # The way this is achieved is that build_js is invoked by two
        # subcommands: bdist_ext (which is in our case always executed
        # due to a custom distribution) or sdist.
        #
        # Note: at one point install was an in-place build but it's not
        # quite sure why.  In case a version of install breaks again:
        # installations via pip from git URLs definitely require the
        # in-place flag to be disabled.  So we might need to detect
        # that separately.
        #
        # To find the default value of the inplace flag we inspect the
        # sdist and build_ext commands.
        sdist = self.distribution.get_command_obj("sdist")
        build_ext = self.get_finalized_command("build_ext")

        # If we are not decided on in-place we are inplace if either
        # build_ext is inplace or we are invoked through the install
        # command (easiest check is to see if it's finalized).
        if self.inplace is None:
            self.inplace = (build_ext.inplace or sdist.finalized) and 1 or 0

        # If we're coming from sdist, clear the hell out of the dist
        # folder first.
        if sdist.finalized:
            for path in self.get_dist_paths():
                try:
                    shutil.rmtree(path)
                except (OSError, IOError):
                    pass

        # In place means build_lib is src.  We also log this.
        if self.inplace:
            log.debug("in-place js building enabled")
            self.build_lib = "src"
        # Otherwise we fetch build_lib from the build command.
        else:
            self.set_undefined_options("build", ("build_lib", "build_lib"))
            log.debug("regular js build: build path is %s" % self.build_lib)

        if self.work_path is None:
            self.work_path = self.get_root_path()