From 3621bc414a228f7009200b7c03194f79559cd5c7 Mon Sep 17 00:00:00 2001
From: Matthias Koeppe <mkoeppe@math.ucdavis.edu>
Date: Sat, 6 Mar 2021 11:12:11 -0800
Subject: [PATCH] build/pkgs/ipympl/dependencies: Add jupyter_packaging, make
 jupyterlab an optional dependency

---
 build/pkgs/ipympl/dependencies | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/build/pkgs/ipympl/dependencies b/build/pkgs/ipympl/dependencies
index 14f7577b4ad..56687b4dda0 100644
--- a/build/pkgs/ipympl/dependencies
+++ b/build/pkgs/ipympl/dependencies
@@ -1,4 +1,6 @@
-$(PYTHON) | $(PYTHON_TOOLCHAIN) ipywidgets matplotlib ipykernel
+$(PYTHON) | $(PYTHON_TOOLCHAIN) ipywidgets matplotlib ipykernel jupyter_packaging $(findstring jupyterlab,$(OPTIONAL_INSTALLED_PACKAGES))
 
 ----------
 All lines of this file are ignored except the first.
+
+jupyterlab is listed as a "build-system requires", but the package installs correctly without it.