From 24bf6bf31a98511e04e6ff6c6cf94c925d7be96c Mon Sep 17 00:00:00 2001
From: G Roques <groques360@gmail.com>
Date: Wed, 27 Dec 2023 10:15:28 -0600
Subject: [PATCH] Add post-link.sh script

Allows for executing python scripts which import FreeCAD modules
when activating the conda environment containing freecad.

LIMITATIONS:
Windows is not supported.

See the following FreeCAD forum discussion:
https://forum.freecad.org/viewtopic.php?p=493282#p493277
---
 recipe/post-link.sh | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100755 recipe/post-link.sh

diff --git a/recipe/post-link.sh b/recipe/post-link.sh
new file mode 100755
index 00000000..0b1f5c75
--- /dev/null
+++ b/recipe/post-link.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------------------------------------------
+#
+# By adding the $CONDA_PREFIX/lib directory to $PYTHONPATH, python is able to find
+# FreeCAD, FreeCADGui, and other various FreeCAD-related modules during execution.
+#
+# This script is executed after the freecad package is installed.
+# See:
+# https://docs.conda.io/projects/conda-build/en/latest/resources/link-scripts.html
+# 
+# It creates scripts which are executed upon activating and deactivating the conda environment containing freecad.
+# See:
+# https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html#saving-environment-variables
+#
+# ----------------------------------------------------------------------------------------------------------------
+cd $CONDA_PREFIX
+mkdir -p ./etc/conda/activate.d
+mkdir -p ./etc/conda/deactivate.d
+
+echo '#!/bin/sh' > ./etc/conda/activate.d/env_vars.sh
+echo 'export INITIAL_PYTHONPATH=${PYTHONPATH}' >> ./etc/conda/activate.d/env_vars.sh
+echo "export PYTHONPATH=$CONDA_PREFIX/lib:\${PYTHONPATH}" >> ./etc/conda/activate.d/env_vars.sh
+
+echo '#!/bin/sh' > ./etc/conda/deactivate.d/env_vars.sh
+echo 'export PYTHONPATH=${INITIAL_PYTHONPATH}' >> ./etc/conda/deactivate.d/env_vars.sh
+echo 'unset INITIAL_PYTHONPATH' >> ./etc/conda/deactivate.d/env_vars.sh
+
+# Issue describing conda activation scripts for fish shell:
+# https://github.com/conda/conda/issues/7993#issuecomment-459453605
+echo '#!/usr/bin/env fish' > ./etc/conda/activate.d/env_vars.fish
+echo 'set -gx INITIAL_PYTHONPATH $PYTHONPATH' > ./etc/conda/activate.d/env_vars.fish
+echo "set -gx PYTHONPATH $CONDA_PREFIX/lib $PYTHONPATH" >> ./etc/conda/activate.d/env_vars.fish
+
+echo '#!/usr/bin/env fish' > ./etc/conda/deactivate.d/env_vars.fish
+echo 'set -gx PYTHONPATH $INITIAL_PYTHONPATH' >> ./etc/conda/deactivate.d/env_vars.fish
+echo 'set -e INITIAL_PYTHONPATH' >> ./etc/conda/deactivate.d/env_vars.fish
+