2 files changed, 9 insertions, 3 deletions
diff --git a/pkgs/development/libraries/jsoncpp/1.6.nix b/pkgs/development/libraries/jsoncpp/1.6.nix
index 69dfc217573..d8b85847975 100644
--- a/pkgs/development/libraries/jsoncpp/1.6.nix
+++ b/pkgs/development/libraries/jsoncpp/1.6.nix
@@ -11,7 +11,14 @@ stdenv.mkDerivation rec {
     sha256 = "0ff1niks3y41gr6z13q9m391na70abqyi9rj4z3y2fz69cwm6sgz";
   };
 
-  nativeBuildInputs = [ cmake python ];
+  nativeBuildInputs =
+    [
+      # cmake can be built with the system jsoncpp, or its own bundled version.
+      # Obviously we cannot build it against the system jsoncpp that doesn't yet exist, so
+      # we make a bootstrapping build with the bundled version.
+      (cmake.override { jsoncpp = null; })
+      python
+    ];
 
   meta = {
     inherit version;
diff --git a/pkgs/development/libraries/kde-frameworks-5.7/default.nix b/pkgs/development/libraries/kde-frameworks-5.7/default.nix
index b2d59246bc2..30e8d5ffe1c 100644
--- a/pkgs/development/libraries/kde-frameworks-5.7/default.nix
+++ b/pkgs/development/libraries/kde-frameworks-5.7/default.nix
@@ -70,8 +70,7 @@ let
     (with pkgs;
       {
         Boost = boost155;
-        cmake = cmake-3_2;
-        inherit epoxy;
+        inherit cmake epoxy;
         GIF = giflib;
         GLIB2 = glib;
         Gpgme = gpgme;