Radix cross Linux 3pp sources

diff --git a/packages/d/python-modules/Makefile b/packages/d/python-modules/Makefile
index 9ecf6cc..d1eea47 100644
--- a/packages/d/python-modules/Makefile
+++ b/packages/d/python-modules/Makefile
@@ -4,7 +4,8 @@
 # $ tree -fid .
 #
 
-SUBDIRS := m2crypto   \
+SUBDIRS := cython     \
+           m2crypto   \
            pip        \
            setuptools \
            wheel
diff --git a/packages/d/python-modules/cython/Makefile b/packages/d/python-modules/cython/Makefile
new file mode 100644
index 0000000..9c54822
--- /dev/null
+++ b/packages/d/python-modules/cython/Makefile
@@ -0,0 +1,65 @@
+#
+# Project Home:
+# ============
+#   https://cython.org/
+#
+# Downloads:
+# =========
+#   https://pypi.org/project/Cython/
+#
+# GitHub:
+# ======
+#   git clone https://github.com/cython/cython.git
+#
+
+url         = https://github.com/cython
+
+repo_name   = cython
+
+versions    = 3.0.7
+
+suffix      = tar.xz
+
+TAGS        = $(versions)
+
+git_repo    = .git_clone
+tarballs    = $(addsuffix .$(suffix), $(addprefix $(repo_name)-, $(versions)))
+sha1s       = $(addsuffix .sha1sum, $(tarballs))
+
+TARGETS = repository_clean
+
+all: $(TARGETS)
+
+.PHONY: downloads_clean repository_clean
+
+$(git_repo):
+	@echo -e "\n======= Clone $(repo_name).git repository =======\n"
+	@rm -rf $(repo_name)
+	@git clone $(url)/$(repo_name).git $(repo_name)
+	@touch $@
+
+
+$(tarballs): $(git_repo)
+	@for version in $(TAGS) ; do \
+	  tag=`echo $$version`; \
+	  if [ ! -f $(repo_name)-$$version.$(suffix) ]; then \
+	    echo -e "\n======= Creating '$(repo_name)-$$version.$(suffix)' snapshot =======" ; \
+	    ( cd $(repo_name) && \
+	      git archive --format=tar --prefix=$(repo_name)-$$version/ $$tag | \
+	      gzip >../$(repo_name)-$$version.$(suffix) ) ; \
+	  fi ; \
+	done
+
+$(sha1s): %.$(suffix).sha1sum : %.$(suffix)
+	@for tarball in $< ; do \
+	  echo -e "\n======= Calculation the '$$tarball' sha1sum =======" ; \
+	  sha1sum --binary $$tarball > $$tarball.sha1sum ; \
+	done
+
+repository_clean: $(sha1s)
+	@echo -e "\n======= Remove cloned $(repo_name).git repository =======\n"
+	@rm -rf $(git_repo) $(repo_name)
+
+downloads_clean:
+	@rm -rf $(tarballs) $(sha1s)
+	@rm -rf $(git_repo) $(repo_name)