From facb89d2da66118e0caabb3a70d5971a1a60b022 Mon Sep 17 00:00:00 2001
From: Will Ayd <william.ayd@icloud.com>
Date: Fri, 13 Dec 2019 14:54:17 -0800
Subject: [PATCH 1/2] Removed skiplist file

---
 pandas/_libs/skiplist.pxd            | 24 ------------------------
 pandas/_libs/window/aggregations.pyx | 24 +++++++++++++++++++++---
 2 files changed, 21 insertions(+), 27 deletions(-)
 delete mode 100644 pandas/_libs/skiplist.pxd

diff --git a/pandas/_libs/skiplist.pxd b/pandas/_libs/skiplist.pxd
deleted file mode 100644
index e827223bbe0a7..0000000000000
--- a/pandas/_libs/skiplist.pxd
+++ /dev/null
@@ -1,24 +0,0 @@
-# -*- coding: utf-8 -*-
-# See GH#27465 for reference on related-but-unused cython code
-
-cdef extern from "src/skiplist.h":
-    ctypedef struct node_t:
-        node_t **next
-        int *width
-        double value
-        int is_nil
-        int levels
-        int ref_count
-
-    ctypedef struct skiplist_t:
-        node_t *head
-        node_t **tmp_chain
-        int *tmp_steps
-        int size
-        int maxlevels
-
-    skiplist_t* skiplist_init(int) nogil
-    void skiplist_destroy(skiplist_t*) nogil
-    double skiplist_get(skiplist_t*, int, int*) nogil
-    int skiplist_insert(skiplist_t*, double) nogil
-    int skiplist_remove(skiplist_t*, double) nogil
diff --git a/pandas/_libs/window/aggregations.pyx b/pandas/_libs/window/aggregations.pyx
index 8b1588c35b4de..0348843abc129 100644
--- a/pandas/_libs/window/aggregations.pyx
+++ b/pandas/_libs/window/aggregations.pyx
@@ -22,9 +22,27 @@ from pandas._libs.algos import is_monotonic
 
 from pandas._libs.util cimport numeric
 
-from pandas._libs.skiplist cimport (
-    skiplist_t, skiplist_init, skiplist_destroy, skiplist_get, skiplist_insert,
-    skiplist_remove)
+cdef extern from "../src/skiplist.h":
+    ctypedef struct node_t:
+        node_t **next
+        int *width
+        double value
+        int is_nil
+        int levels
+        int ref_count
+
+    ctypedef struct skiplist_t:
+        node_t *head
+        node_t **tmp_chain
+        int *tmp_steps
+        int size
+        int maxlevels
+
+    skiplist_t* skiplist_init(int) nogil
+    void skiplist_destroy(skiplist_t*) nogil
+    double skiplist_get(skiplist_t*, int, int*) nogil
+    int skiplist_insert(skiplist_t*, double) nogil
+    int skiplist_remove(skiplist_t*, double) nogil
 
 cdef:
     float32_t MINfloat32 = np.NINF

From 969bdc377bdf0c986fb4309845ced6bc85fd397f Mon Sep 17 00:00:00 2001
From: Will Ayd <william.ayd@icloud.com>
Date: Fri, 13 Dec 2019 14:57:02 -0800
Subject: [PATCH 2/2] Added depends to setup

---
 setup.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/setup.py b/setup.py
index 01d41ea5241f2..e42a570200dc3 100755
--- a/setup.py
+++ b/setup.py
@@ -687,6 +687,7 @@ def srcpath(name=None, suffix=".pyx", subdir="src"):
         "pyxfile": "_libs/window/aggregations",
         "language": "c++",
         "suffix": ".cpp",
+        "depends": ["pandas/_libs/src/skiplist.h"],
     },
     "_libs.window.indexers": {"pyxfile": "_libs/window/indexers"},
     "_libs.writers": {"pyxfile": "_libs/writers"},