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-rw-r--r--pkgs/stdenv/generic/default.nix1
-rw-r--r--pkgs/stdenv/generic/setup.sh12
2 files changed, 13 insertions, 0 deletions
diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index a063a1ed2dc9..43b35082161d 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -94,6 +94,7 @@ let
       ../../build-support/setup-hooks/compress-man-pages.sh
       ../../build-support/setup-hooks/strip.sh
       ../../build-support/setup-hooks/patch-shebangs.sh
+      ../../build-support/setup-hooks/audit-tmpdir.sh
       ../../build-support/setup-hooks/multiple-outputs.sh
       ../../build-support/setup-hooks/move-sbin.sh
       ../../build-support/setup-hooks/move-lib64.sh
diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index de33ab565982..eb63b18e5f3d 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -199,6 +199,18 @@ isELF() {
     if [[ "$magic" =~ ELF ]]; then return 0; else return 1; fi
 }
 
+# Return success if the specified file is a script (i.e. starts with
+# "#!").
+isScript() {
+    local fn="$1"
+    local magic
+    if ! [ -x /bin/sh ]; then return 0; fi
+    exec {fd}< "$fn"
+    read -n 2 -u $fd magic
+    exec {fd}<&-
+    if [[ "$magic" =~ \#! ]]; then return 0; else return 1; fi
+}
+
 
 ######################################################################
 # Initialisation.