hack: "fix" the .env loading by just using `pwd` instead of dirname $_ etc

.env

@@ -2,8 +2,10 @@
 #
 # SPDX-License-Identifier: CC0-1.0
 
-repo_dir=$(cd "$(dirname "$_")" && pwd)
+# Load-bearing useless command, for bash. I have *no* idea why, but evaluating
+# $@ is necessary for the rest to work.
+
+repo_dir=$(pwd)
 export PROJ_PATH=$repo_dir
 export IDF_PATH=$repo_dir/lib/esp-idf
 . $IDF_PATH/export.sh
-