diff --git a/recipes/wip/mercurial/recipe.toml b/recipes/wip/mercurial/recipe.toml
new file mode 100644
index 0000000000000000000000000000000000000000..6a57d38c151417121b137e60fe89320e21e362cd
--- /dev/null
+++ b/recipes/wip/mercurial/recipe.toml
@@ -0,0 +1,6 @@
+#TODO missing script for GNU Make, see https://wiki.mercurial-scm.org/UnixInstall
+#TODO require CPython header files
+[source]
+tar = "https://www.mercurial-scm.org/release/mercurial-6.6.2.tar.gz"
+[build]
+template = "custom"