woot, back up and running, the error was not at al related to nixvim...

flake.nix

@@ -59,16 +59,16 @@
         my = self.packages.${system};
       };
 
-      nvfetcher = final: prev: {
+#       nvfetcher = final: prev: {
-        sources =
+#         sources =
-          builtins.mapAttrs (_: p: p.src)
+#           builtins.mapAttrs (_: p: p.src)
-          ((import ./packages/_sources/generated.nix) {
+#           ((import ./packages/_sources/generated.nix) {
-            inherit (final) fetchurl fetchgit fetchFromGitHub dockerTools;
+#             inherit (final) fetchurl fetchgit fetchFromGitHub dockerTools;
-          });
+#           });
-      };
+#       };
     };
 
-    packages."${system}" = mapModules ./packages (p: pkgs.callPackage p {});
+#     packages."${system}" = mapModules ./packages (p: pkgs.callPackage p {});
 
     nixosModules =
       {

hosts/chris-pc/default.nix

@@ -33,6 +33,7 @@
 
       editors = {
         default = "nano";
+        zed.enable = true;
         nvim.enable = true;
         nano.enable = true;
       };

modules/desktop/editors/nvim.nix

@@ -12,13 +12,14 @@ in
     programs.nixvim = {
       enable = true;
 
-      options = {
+      opts = {
         number = true;
 
         shiftwidth = 2;
       };
 
-#       colorschemes.gruvbox.enable = true;
+#       colorschemes.base16 = "${pkgs.base16-schemes}/share/themes/everforest.yaml";
+      colorschemes.everforest.enable = true;
 
       plugins = {
         lualine.enable = true;
@@ -29,18 +30,17 @@ in
           servers = {
             tsserver.enable = true;
             lua-ls.enable = true;
-            rust-analyzer.enable = true;
+            rust-analyzer = {
+              enable = true;
+              installRustc = true;
+              installCargo = true;
+            };
           };
         };
 
-        nvim-cmp = {
+        cmp = {
           enable = true;
           autoEnableSources = true;
-          sources = [
-            {name = "nvim_lsp";}
-            {name = "path";}
-            {name = "buffer";}
-          ];
         };
       };
     };

modules/desktop/editors/zed.nix

@@ -0,0 +1,19 @@
+{ config, options, lib, pkgs, ... }:
+let
+  inherit (lib.meta) getExe;
+  inherit (lib.modules) mkIf;
+  inherit (lib.attrsets) attrValues;
+
+  cfg = config.modules.desktop.editors.zed;
+in
+{
+  options.modules.desktop.editors.zed = let
+    inherit (lib.options) mkEnableOption;
+  in { enable = mkEnableOption "zed"; };
+
+  config = mkIf cfg.enable {
+    user.packages = attrValues {
+      inherit (pkgs) zed-editor;
+    };
+  };
+}

packages/everforest-gtk/default.nix

@@ -1,69 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchFromGitHub,
-  gtk-engine-murrine,
-  jdupes,
-  sassc,
-  accent ? ["default"],
-  shade ? "dark",
-  size ? "standard",
-}: let
-  validAccents = ["default" "purple" "pink" "red" "orange" "yellow" "green" "teal" "grey"];
-  validShades = ["light" "dark"];
-  validSizes = ["standard" "compact"];
-
-  single = x: lib.optional (x != null) x;
-  pname = "Everforest";
-in
-  lib.checkListOfEnum "${pname} Valid theme accent(s)" validAccents accent
-  lib.checkListOfEnum "${pname} Valid shades" validShades (single shade)
-  lib.checkListOfEnum "${pname} Valid sizes" validSizes (single size)
-
-  stdenv.mkDerivation {
-    pname = "${pname}";
-    version = "0-unstable-2024-06-27";
-
-    src = fetchFromGitHub {
-      owner = "Fausto-Korpsvart";
-      repo = "Everforest-GTK-Theme";
-      rev = "bb3fc27a2468f0965a738d9d3b30c52a799572d2";
-      hash = "sha256-sTHyH1pCq/d2JMmEppdQAc+P8a3y1lM+WQcW7nXEoPE=";
-    };
-
-    nativeBuildInputs = [jdupes sassc];
-
-    propagatedUserEnvPkgs = [gtk-engine-murrine];
-
-    postPatch = ''
-      find -name "*.sh" -print0 | while IFS= read -r -d ''' file; do
-        patchShebangs "$file"
-      done
-    '';
-
-    dontBuild = true;
-
-    installPhase = ''
-      runHook preInstall
-
-      mkdir -p $out/share/themes
-
-      ./themes/install.sh \
-        --name ${pname} \
-        ${toString (map (x: "--theme " + x) accent)} \
-        ${lib.optionalString (shade != null) ("--color " + shade)} \
-        ${lib.optionalString (size != null) ("--size " + size)} \
-        --dest $out/share/themes
-
-      jdupes --quiet --link-soft --recurse $out/share
-
-      runHook postInstall
-    '';
-
-    meta = with lib; {
-      description = "A GTK theme based on the Everforest colour palette";
-      homepage = "https://github.com/Fausto-Korpsvart/Everforest-GTK-Theme";
-      license = licenses.gpl3Only;
-      platforms = platforms.all;
-    };
-  }