diff --git a/.env.fish b/.env.fish
new file mode 100644
index 00000000..a48c3dc0
--- /dev/null
+++ b/.env.fish
@@ -0,0 +1,9 @@
+# Copyright 2023 jacqueline <me@jacqueline.id.au>
+#
+# SPDX-License-Identifier: CC0-1.0
+
+set -l repo_dir (cd (dirname $_) && pwd)
+set -gx PROJ_PATH $repo_dir
+set -gx IDF_PATH $repo_dir/lib/esp-idf
+. $IDF_PATH/export.fish
+