OPENOCD_SCRIPTS env var is set to the wrong value

[hagl]

In the dev shell for esp-idf-full, the environment variable OPENOCD_SCRIPTS gets an additional export added, which point to a non existing directory:

[~]$ nix develop github:mirrexagon/nixpkgs-esp-dev#esp-idf-full

(nix-shell)[~]$ echo $OPENOCD_SCRIPTS
/nix/store/yrqc9pykz07i5ldbkqg83x6p33y1911r-openocd-esp32-esp-idf-v5.5.2/openocd-esp32/share/openocd/scriptsexport

(nix-shell)[~]$ ls $OPENOCD_SCRIPTS
ls: cannot access '/nix/store/yrqc9pykz07i5ldbkqg83x6p33y1911r-openocd-esp32-esp-idf-v5.5.2/openocd-esp32/share/openocd/scriptsexport': No such file or directory

(nix-shell)[~]$ ls /nix/store/yrqc9pykz07i5ldbkqg83x6p33y1911r-openocd-esp32-esp-idf-v5.5.2/openocd-esp32/share/openocd/scripts
bitsbytes.tcl  board  chip  cpld  cpu  esp-config.json  file_renaming.cfg  fpga  interface  mem_helper.tcl  memory.tcl  mmr_helpers.tcl  target  test  tools