diff --git a/pkgs/build-support/fetchbzr/nix-prefetch-bzr b/pkgs/build-support/fetchbzr/nix-prefetch-bzr
index 346c2b05cbd..8143fca7025 100755
--- a/pkgs/build-support/fetchbzr/nix-prefetch-bzr
+++ b/pkgs/build-support/fetchbzr/nix-prefetch-bzr
@@ -43,7 +43,7 @@ fi
 # If we don't know the hash or a path with that hash doesn't exist,
 # download the file and add it to the store.
 if test -z "$finalPath"; then
-    tmpPath="$(mktemp --tmpdir -d bzr-checkout-tmp-XXXXXXXX)"
+    tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/bzr-checkout-tmp-XXXXXXXX")"
     trap "rm -rf \"$tmpPath\"" EXIT
 
     tmpFile="$tmpPath/$dstFile"
diff --git a/pkgs/build-support/fetchcvs/nix-prefetch-cvs b/pkgs/build-support/fetchcvs/nix-prefetch-cvs
index 29e0d29b52e..f9ed8ffa066 100755
--- a/pkgs/build-support/fetchcvs/nix-prefetch-cvs
+++ b/pkgs/build-support/fetchcvs/nix-prefetch-cvs
@@ -20,7 +20,7 @@ fi
 
 
 mkTempDir() {
-    tmpPath=$(mktemp -d -t nix-prefetch-cvs-XXXXXXXX)
+    tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/nix-prefetch-cvs-XXXXXXXX")"
     trap removeTempDir EXIT SIGINT SIGQUIT
 }
 
diff --git a/pkgs/build-support/fetchgit/nix-prefetch-git b/pkgs/build-support/fetchgit/nix-prefetch-git
index 0d2536e225c..4f9dd2ac272 100755
--- a/pkgs/build-support/fetchgit/nix-prefetch-git
+++ b/pkgs/build-support/fetchgit/nix-prefetch-git
@@ -256,7 +256,7 @@ else
   # download the file and add it to the store.
   if test -z "$finalPath"; then
 
-      tmpPath="$(mktemp --tmpdir -d git-checkout-tmp-XXXXXXXX)"
+      tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/git-checkout-tmp-XXXXXXXX")"
       trap "rm -rf \"$tmpPath\"" EXIT
 
       tmpFile="$tmpPath/git-export"
diff --git a/pkgs/build-support/fetchhg/nix-prefetch-hg b/pkgs/build-support/fetchhg/nix-prefetch-hg
index 7d4c0c8d741..a8916176f8a 100755
--- a/pkgs/build-support/fetchhg/nix-prefetch-hg
+++ b/pkgs/build-support/fetchhg/nix-prefetch-hg
@@ -35,7 +35,7 @@ fi
 # download the file and add it to the store.
 if test -z "$finalPath"; then
 
-    tmpPath="$(mktemp --tmpdir -d hg-checkout-tmp-XXXXXXXX)"
+    tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/hg-checkout-tmp-XXXXXXXX")"
     trap "rm -rf \"$tmpPath\"" EXIT
 
     tmpArchive="$tmpPath/hg-archive"
diff --git a/pkgs/build-support/fetchsvn/nix-prefetch-svn b/pkgs/build-support/fetchsvn/nix-prefetch-svn
index 74de0a14c80..03b9eb9a03d 100755
--- a/pkgs/build-support/fetchsvn/nix-prefetch-svn
+++ b/pkgs/build-support/fetchsvn/nix-prefetch-svn
@@ -41,7 +41,7 @@ fi
 # If we don't know the hash or a path with that hash doesn't exist,
 # download the file and add it to the store.
 if test -z "$finalPath"; then
-    tmpPath="$(mktemp --tmpdir -d svn-checkout-tmp-XXXXXXXX)"
+    tmpPath="$(mktemp -d "${TMPDIR:-/tmp}/svn-checkout-tmp-XXXXXXXX")"
     trap "rm -rf \"$tmpPath\"" EXIT
 
     tmpFile="$tmpPath/$dstFile"