1 files changed, 21 insertions, 0 deletions
diff --git a/pkgs/development/interpreters/python/setup-hook.sh b/pkgs/development/interpreters/python/setup-hook.sh
new file mode 100644
index 000000000000..dda9bed39f85
--- /dev/null
+++ b/pkgs/development/interpreters/python/setup-hook.sh
@@ -0,0 +1,21 @@
+addPythonPath() {
+    addToSearchPathWithCustomDelimiter : PYTHONPATH $1/@sitePackages@
+}
+
+toPythonPath() {
+    local paths="$1"
+    local result=
+    for i in $paths; do
+        p="$i/@sitePackages@"
+        result="${result}${result:+:}$p"
+    done
+    echo $result
+}
+
+envHooks+=(addPythonPath)
+
+# Determinism: The interpreter is patched to write null timestamps when compiling python files.
+# This way python doesn't try to update them when we freeze timestamps in nix store.
+export DETERMINISTIC_BUILD=1;
+# Determinism: We fix the hashes of str, bytes and datetime objects.
+export PYTHONHASHSEED=0;