pkgs/top-level/all-packages.nix: prefer makeOverridable over getPkgConfig to customize pdsh

Changed 'pdsh' expression to allow for argument overriding instead of relying
on getPkgConfig.

svn path=/nixpkgs/trunk/; revision=21867

1 files changed, 4 insertions, 6 deletions

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 295e23559fcb..d9606cadaaa1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -1361,12 +1361,10 @@ let
     inherit fetchurl stdenv ncurses postgresql;
   };
 
-  pdsh = import ../tools/networking/pdsh {
-    inherit fetchurl stdenv perl;
-    readline = if getPkgConfig "pdsh" "readline" true then readline else null;
-    rsh = getPkgConfig "pdsh" "rsh" true;
-    ssh = if getPkgConfig "pdsh" "ssh" true then openssh else null;
-    pam = if getPkgConfig "pdsh" "pam" true then pam else null;
+  pdsh = makeOverridable (import ../tools/networking/pdsh) {
+    inherit fetchurl stdenv perl readline pam;
+    rsh = true;			# enable internal rsh implementation
+    ssh = openssh;
   };
 
   pfstools = import ../tools/graphics/pfstools {