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-rw-r--r--pkgs/applications/science/logic/hol/default.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/applications/science/logic/hol/default.nix b/pkgs/applications/science/logic/hol/default.nix
index 63040b7fdd52b..5552fadc55598 100644
--- a/pkgs/applications/science/logic/hol/default.nix
+++ b/pkgs/applications/science/logic/hol/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation {
   buildInputs = [polyml];
 
   buildCommand = ''
-    ensureDir "$out/src"
+    mkdir -p "$out/src"
     cd  "$out/src"
 
     tar -xzf "$src"
@@ -28,7 +28,7 @@ stdenv.mkDerivation {
     
     bin/build -expk -symlink
 
-    ensureDir "$out/bin"
+    mkdir -p "$out/bin"
     ln -st $out/bin  $out/src/hol/bin/*
     # ln -s $out/src/hol/bin $out/bin
   '';