config.nix

# This does now work:
    vimEnv = with self.pkgs; buildEnv {
      name = "vim-env";
      paths = [
        (vimNox.override {
          name = "vim_configurable-7.4.712";
          src = self.fetchurl {
            url = "http://mirrors.kernel.org/debian/pool/main/v/vim/vim_7.4.712.orig.tar.gz";
            sha256 = "0p5mcr5402d3vxy3wv5q6qbhd23b4kzffifgkz90bil2csgvld5k";
          };
          patches = [
            ./vimNox/python_framework_new.patch
          ];
          configure = {
            customRC = ''
              source $HOME/.vimrc
            '';
            vam.pluginDictionaries = [
              { names = [ "YouCompleteMe" "UltiSnips" ]; }
            ];
          };
        })
      ];
    };
    
# This does work but without the plugins
    myVim = self.stdenv.lib.overrideDerivation self.vimNox (oldAttrs: {
      name = "vim_configurable-7.4.712";
      src = self.fetchurl {
        url = "http://mirrors.kernel.org/debian/pool/main/v/vim/vim_7.4.712.orig.tar.gz";
        sha256 = "0p5mcr5402d3vxy3wv5q6qbhd23b4kzffifgkz90bil2csgvld5k";
      };
      patches = [
        ./vimNox/python_framework_new.patch
      ];
    });

error

os_unix.c:833:46: warning: declaration of 'struct sigaltstack' will not be visible outside of this function [-Wvisibility]
        extern int sigaltstack __ARGS((const struct sigaltstack *ss, struct sigaltstack *oss));
                                                    ^
./os_unix.h:88:21: note: expanded from macro '__ARGS'
#  define __ARGS(x) x
                    ^
os_unix.c:833:13: error: conflicting types for 'sigaltstack'
        extern int sigaltstack __ARGS((const struct sigaltstack *ss, struct sigaltstack *oss));
                   ^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/signal.h:87:5: note: previous declaration is here
int     sigaltstack(const stack_t * __restrict, stack_t * __restrict)  __DARWIN_ALIAS(sigaltstack);
        ^
1 warning and 1 error generated.
Makefile:2638: recipe for target 'objects/os_unix.o' failed
make[1]: *** [objects/os_unix.o] Error 1
make[1]: *** Waiting for unfinished jobs....
2 warnings generated.
make[1]: Leaving directory '/private/var/folders/8w/n_txhbn945j9gxp6bz2nhkhr0000gn/T/nix-build-vim_configurable-7.4.516.drv-0/nix_repository_manager/src'
Makefile:26: recipe for target 'first' failed
make: *** [first] Error 2
builder for ‘/nix/store/nzq80i8zyfqgzss7gnp30rqpqsk1mbkf-vim_configurable-7.4.516.drv’ failed with exit code 2
cannot build derivation ‘/nix/store/vx8s0250hf55hq9rbzlj6brfbkgq2006-vim-env.drv’: 1 dependencies couldn't be built
error: build of ‘/nix/store/vx8s0250hf55hq9rbzlj6brfbkgq2006-vim-env.drv’ failed