From f05e28dda04814ff737ea400a34fdbe4f1d3fc93 Mon Sep 17 00:00:00 2001
From: Matthew Feickert <matthew.feickert@cern.ch>
Date: Wed, 11 Sep 2024 03:04:45 -0500
Subject: [PATCH] build: Remove transient directories after install to allow
 for rebuild

* While doing multiple rebuilds it is advisable to also clean up the
  state of the Git submodules with 'git clean -f', removing the OUTPUT
  directory at src/fastjet/_fastjet_core/ and the top level build directory
  is sufficient to do local development rebuilds --- i.e., the command
  'python -m pip install --upgrade .' can be run twice in a row without error.
---
 setup.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/setup.py b/setup.py
index 36c0c44a..e90bcf30 100644
--- a/setup.py
+++ b/setup.py
@@ -29,6 +29,13 @@
 PYTHON = DIR / "src/fastjet"
 OUTPUT = PYTHON / "_fastjet_core"
 
+
+# Clean up transient directories to allow for rebuilds during development
+if (DIR / "build").exists():
+    shutil.rmtree(DIR / "build")
+if OUTPUT.exists():
+    shutil.rmtree(OUTPUT)
+
 LIBS = [
     "fastjet",
     "fastjettools",