configuration.nix

{
    nixpkgs.config.packageOverrides = pkgs: rec {
      libsigsegv = pkgs.stdenv.lib.overrideDerivation pkgs.libsigsegv (oldAttrs : { doCheck = false; });
      kf5_stable = pkgs.kf5_latest;
      plasma5_stable = pkgs.plasma5_latest;
      kdeApps_stable = pkgs.kdeApps_latest;
    };
}

error.log

building check-TESTS
Test passed.
PASS: sigsegv1
Test passed.
PASS: sigsegv2
Doing SIGSEGV pass 1.
Stack overflow 1 caught.
Doing SIGSEGV pass 2.
Stack overflow 2 caught.
Test passed.
PASS: sigsegv3
/nix/store/20zqldqy0lp34qs6y5yj5hjsjynyaf3p-bootstrap-tools/bin/sh: line 5: 28563 Bus error               ${dir}$tst
FAIL: stackoverflow1
/nix/store/20zqldqy0lp34qs6y5yj5hjsjynyaf3p-bootstrap-tools/bin/sh: line 5: 28574 Bus error               ${dir}$tst
FAIL: stackoverflow2
===================
2 of 5 tests failed
===================
make[2]: *** [check-TESTS] Error 1
make[2]: Leaving directory `/tmp/nix-build-libsigsegv-2.10.drv-0/libsigsegv-2.10/tests'
make[1]: *** [check-am] Error 2
make[1]: Leaving directory `/tmp/nix-build-libsigsegv-2.10.drv-0/libsigsegv-2.10/tests'
make: *** [check-recursive] Error 1
yes
checking whether gettimeofday is declared without a macro... builder for ‘/nix/store/jsri756rfdixn0pi7vkrq1ggy3x22fc3-libsigsegv-2.10.drv’ failed with exit code 2
building path(s) ‘/nix/store/r6f0s2j99q0qb7k4zx5g101yq4d7bb9q-libsigsegv-2.10’
cannot build derivation ‘/nix/store/ysysc1zrqqx31vbc419isis64rmj1fhh-stdenv.drv’: 1 dependencies couldn't be built
cannot build derivation ‘/nix/store/955mqpkzbngm5py0259sfg23a4w596m5-alsa-plugins-1.0.28.drv’: 1 dependencies couldn't be built
cannot build derivation ‘/nix/store/nfkz3dhi7cqqc7w003jfhrsw23vl9ydx-mesa-drivers+txc-10.2.9.drv’: 1 dependencies couldn't be built
cannot build derivation ‘/nix/store/fvsl45kysin8hxwsh01dzmcl9yscbam4-pulseaudio-5.0.drv’: 1 dependencies couldn't be built
cannot build derivation ‘/nix/store/k67xmxcp6fbflvx6073yh89qnnzr0yji-nixos-15.05.git.83ce106.drv’: 1 dependencies couldn't be built
error: build of ‘/nix/store/k67xmxcp6fbflvx6073yh89qnnzr0yji-nixos-15.05.git.83ce106.drv’ failed