Ensure that some deps for ipynb are in the venv

BUILD.bazel

@@ -256,6 +256,7 @@ py_venv(
         "//py/ci/postUpgrade:postUpgrade_bin",
         "//py/hello_world:hello_world_bin",
         "//py/ibazel:ibazel_bin",
+        "//py/ipynb",
         "//py/ipynb:ipynb_bin",
         "//py/sectxt:sectxt_bin",
     ],

py/ipynb/BUILD.bazel

@@ -1,5 +1,5 @@
 load("//bzl:rules.bzl", "bazel_lint")
-load("//py:rules.bzl", "py_binary")
+load("//py:rules.bzl", "py_binary", "py_library")
 
 py_binary(
     name = "ipynb_bin",
@@ -13,3 +13,13 @@ bazel_lint(
     name = "bazel_lint",
     srcs = ["BUILD.bazel"],
 )
+
+py_library(
+    name = "ipynb",
+    srcs = ["lib.py"],
+    visibility = ["//:__subpackages__"],
+    deps = [
+        "@pip//ipykernel",
+        "@pip//pip",
+    ],
+)

py/ipynb/lib.py

@@ -0,0 +1,5 @@
+"Ensures that the ipython modules are in the venv before I get gazelle working"
+import ipykernel
+import pip
+
+print(ipykernel, pip)