From 1e787cabfab0f704fc7163c7a14f9f07c0fc49b3 Mon Sep 17 00:00:00 2001
From: Ken Odegard <kodegard@anaconda.com>
Date: Wed, 18 Sep 2024 16:11:40 -0500
Subject: [PATCH 1/2] Remove $CONDA_DEFAULT_ENV templating engine

---
 conda_build/metadata.py | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/conda_build/metadata.py b/conda_build/metadata.py
index 071036bd0c..6917617c8e 100644
--- a/conda_build/metadata.py
+++ b/conda_build/metadata.py
@@ -1942,16 +1942,6 @@ def _get_contents(
             jinja2.FileSystemLoader(path),
         ]
 
-        # search relative to current conda environment directory
-        conda_env_path = os.environ.get(
-            "CONDA_DEFAULT_ENV"
-        )  # path to current conda environment
-        if conda_env_path and os.path.isdir(conda_env_path):
-            conda_env_path = os.path.abspath(conda_env_path)
-            conda_env_path = conda_env_path.replace("\\", "/")  # need unix-style path
-            env_loader = jinja2.FileSystemLoader(conda_env_path)
-            loaders.append(jinja2.PrefixLoader({"$CONDA_DEFAULT_ENV": env_loader}))
-
         undefined_type = jinja2.StrictUndefined
         if permit_undefined_jinja:
             # The UndefinedNeverFail class keeps a global list of all undefined names

From fee13b264980250b928dafefcc558821e3315bb8 Mon Sep 17 00:00:00 2001
From: Ken Odegard <kodegard@anaconda.com>
Date: Fri, 20 Sep 2024 12:08:20 -0500
Subject: [PATCH 2/2] Add news

---
 ...emove-$CONDA_DEFAULT_ENV-templating-engine | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 news/5495-remove-$CONDA_DEFAULT_ENV-templating-engine

diff --git a/news/5495-remove-$CONDA_DEFAULT_ENV-templating-engine b/news/5495-remove-$CONDA_DEFAULT_ENV-templating-engine
new file mode 100644
index 0000000000..5fe0adddb4
--- /dev/null
+++ b/news/5495-remove-$CONDA_DEFAULT_ENV-templating-engine
@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* <news item>
+
+### Deprecations
+
+* Remove broken `$CONDA_DEFAULT_ENV` templating engine. (#5495)
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>