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-rw-r--r--pkgs/applications/science/logic/twelf/default.nix8
-rw-r--r--pkgs/applications/science/math/gap/default.nix2
2 files changed, 5 insertions, 5 deletions
diff --git a/pkgs/applications/science/logic/twelf/default.nix b/pkgs/applications/science/logic/twelf/default.nix
index 1079c3783218..c6c7e4d9c1a7 100644
--- a/pkgs/applications/science/logic/twelf/default.nix
+++ b/pkgs/applications/science/logic/twelf/default.nix
@@ -17,15 +17,15 @@ stdenv.mkDerivation rec {
   '';
 
   installPhase = ''
-    ensureDir $out/bin
+    mkdir -p $out/bin
     rsync -av bin/* $out/bin/
 
-    ensureDir $out/share/emacs/site-lisp/twelf/
+    mkdir -p $out/share/emacs/site-lisp/twelf/
     rsync -av emacs/ $out/share/emacs/site-lisp/twelf/
 
-    ensureDir $out/share/twelf/examples
+    mkdir -p $out/share/twelf/examples
     rsync -av examples/ $out/share/twelf/examples/
-    ensureDir $out/share/twelf/vim
+    mkdir -p $out/share/twelf/vim
     rsync -av vim/ $out/share/twelf/vim/
   '';
 
diff --git a/pkgs/applications/science/math/gap/default.nix b/pkgs/applications/science/math/gap/default.nix
index 74fff2390a39..0700251c3a82 100644
--- a/pkgs/applications/science/math/gap/default.nix
+++ b/pkgs/applications/science/math/gap/default.nix
@@ -38,7 +38,7 @@ rec {
   phaseNames = ["doConfigure" "doMake" "doDeploy"];
 
   doDeploy = a.fullDepEntry ''
-    ensureDir "$out/bin" "$out/share/gap/"
+    mkdir -p "$out/bin" "$out/share/gap/"
 
     cp -r . "$out/share/gap/build-dir"