From a1c3bdf29a73336904e7c5ec83db5330fa6c3861 Mon Sep 17 00:00:00 2001
From: jaimergp <jaimergp@users.noreply.github.com>
Date: Fri, 13 Oct 2023 01:01:06 +0200
Subject: [PATCH 1/2] Fallback to input package filename if not found in the
 index; it should be equivalent anyway

---
 conda_build/render.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/conda_build/render.py b/conda_build/render.py
index 881898dc9d..fa428e07f6 100644
--- a/conda_build/render.py
+++ b/conda_build/render.py
@@ -384,7 +384,7 @@ def execute_download_actions(m, actions, env, package_subset=None, require_files
             with utils.LoggingContext():
                 pfe.execute()
             for pkg_dir in pkgs_dirs:
-                _loc = os.path.join(pkg_dir, index[pkg].fn)
+                _loc = os.path.join(pkg_dir, index.get(pkg, pkg).fn)
                 if os.path.isfile(_loc):
                     pkg_loc = _loc
                     break

From d77cc73ad9c73983bd6999dff884fbbdf8ec2fa2 Mon Sep 17 00:00:00 2001
From: jaimergp <jaimergp@users.noreply.github.com>
Date: Tue, 17 Oct 2023 10:34:06 +0200
Subject: [PATCH 2/2] add news

---
 news/5037-conda-libmamba-solver-pins | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 news/5037-conda-libmamba-solver-pins

diff --git a/news/5037-conda-libmamba-solver-pins b/news/5037-conda-libmamba-solver-pins
new file mode 100644
index 0000000000..d4044fac0f
--- /dev/null
+++ b/news/5037-conda-libmamba-solver-pins
@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Fallback to solved record filename to find the downloaded tarball in `get_upstream_pins`. (#4991 via #5037)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>