blesh: patch build helper shebangs

Assisted-by: Codex CLI with gpt-5.5 default (OpenAI)

pkgs/by-name/bl/blesh/package.nix

@@ -28,10 +28,6 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     # Fix the cache invalidation not working; see
     # https://github.com/NixOS/nixpkgs/pull/521218#issuecomment-4641313131
     ./fix-cache-invalidation.patch
-    # ble.sh reaches a runtime-dir fallback under the install base when the
-    # others are unusable (always on WSL); see
-    # https://github.com/NixOS/nixpkgs/pull/521218#issuecomment-4686973408
-    ./skip-readonly-runtime-dir.patch
   ];
 
   # ble.sh embeds the commit id, normally read from .git, which fetchFromGitHub omits.
@@ -41,6 +37,10 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     "BLE_GIT_BRANCH=master"
   ];
 
+  postPatch = ''
+    patchShebangs --build make_command.sh make
+  '';
+
   doCheck = true;
   # auto-detection runs `make -n check` without makeFlags, which fails without BLE_GIT_COMMIT_ID
   checkTarget = "check";

pkgs/by-name/bl/blesh/skip-readonly-runtime-dir.patch

@@ -1,10 +0,0 @@
---- a/ble.pp
-+++ b/ble.pp
-@@ -1934,6 +1934,7 @@
- function ble/base/initialize-runtime-directory/.base {
-   local tmp_dir=$_ble_base/run
-   if [[ ! -d $tmp_dir ]]; then
-+    [[ -w $_ble_base ]] || return 1
-     ble/bin/mkdir -p "$tmp_dir" || return 1
-     ble/bin/chmod a+rwxt "$tmp_dir" || return 1
-   fi