fix: add abs path to env sh nim pkg

Author: Ivansete-status

nix/shell.nix

@@ -25,8 +25,9 @@ in mkShell {
 
   shellHook = lib.optionalString (!isMacM1) ''
     echo "Patching env.sh to use Nix Nim..."
-    env_sh="vendor/github.com/waku-org/sds-go-bindings/third_party/nim-sds/vendor/nimbus-build-system/scripts/env.sh"
+    env_sh="/go/src/github.com/status-im/status-go/vendor/github.com/waku-org/sds-go-bindings/third_party/nim-sds/vendor/nimbus-build-system/scripts/env.sh"
     if [ -f "$env_sh" ]; then
+      echo "Replacing nim by ${pkgs.nim}/bin/nim"
       ${pkgs.gnused}/bin/substituteInPlace "$env_sh" \
         --replace-warn "/vendor/Nim/bin/nim" "${pkgs.nim}/bin/nim"
     fi