refactor(flake)!: deduplicate code in configurations flake module

Pass around `perSystem`'s `pkgs` instances to the system configurations
Some more refactoring in `configurations`' `mkHost` functions
Also start using `home-manager`'s `useGlobalPkgs` option
Also use `mkShellNoCC` for default `devShell`
Also `nix flake update`

machines/nix-darwin/aarch64-darwin/limonka/configuration.nix

@@ -8,10 +8,21 @@
   # Auto upgrade nix package and the daemon service.
   services.nix-daemon.enable = true;
 
-  nix = {
+  nix = let
+    flakeInputs = lib.filterAttrs (lib.const (lib.isType "flake")) inputs;
+  in {
     # Ensure we can work with flakes
+    # NOTE: run `sudo -i nix-env --uninstall nix` to uninstall the global `nix`
     package = pkgs.nixVersions.monitored.latest;
 
+    # This will add each flake input as a registry
+    # To make nix3 commands consistent with your flake
+    registry = lib.mapAttrs (_: value: { flake = value; }) flakeInputs;
+
+    # This will additionally add your inputs to the system's legacy channels
+    # Making legacy nix commands consistent as well, awesome!
+    nixPath = lib.mapAttrsToList (key: value: "${key}=flake:${key}") flakeInputs;
+
     # extraOptions = ''
     #   # Enable flakes and new 'nix' command
     #   experimental-features = nix-command flakes
@@ -24,15 +35,6 @@
     #   keep-derivations = true
     # '';
 
-    # registry.nixpkgs.flake = inputs.nixpkgs;
-    # registry =
-    #   lib.mapAttrs'
-    #     (name: value:
-    #       {
-    #         name = name;
-    #         value = { flake = value; };
-    #       })
-    #     inputs;
 
     settings = {
       # Enable flakes and new 'nix' command
@@ -89,8 +91,7 @@
   programs.zsh.enable = true; # default shell on catalina
 
   # Fonts
-  fonts.fontDir.enable = true;
-  fonts.fonts = with pkgs; [
+  fonts.packages = with pkgs; [
     (nerdfonts.override { fonts = [ "FiraCode" ]; })
   ];
 

machines/nix-darwin/aarch64-darwin/limonka/home/pavelatanasov.nix

@@ -7,14 +7,6 @@
     stateVersion = "23.05";
   };
 
-  # Add custom overlays
-  nixpkgs = {
-    overlays = builtins.attrValues outputs.overlays ++ [
-      inputs.neovim-nightly-overlay.overlays.default
-      inputs.zig-overlay.overlays.default
-    ];
-  };
-
   # Set env vars
   home.sessionVariables = {
     EDITOR = "nvim";
@@ -40,18 +32,33 @@
 
     # Neovim
     neovim
+    # (neovim.overrideAttrs (oldAttrs: {
+    #   lua = luajitcoroutineclone;
+    # }))
+    (pkgs.writeShellScriptBin "lua" "exec -a $0 ${luajitPackages.nlua}/bin/nlua $@")
+    # luajitPackages.nlua
     fennel
-    fennel-language-server
+    # fennel-language-server
+    fennel-ls
     git
     gh
 
+    # (gnumake.override { guileSupport = true; })
+    gnumake
+
+    # # Emacs
+    # (emacs-unstable.override {
+    #    withGTK3 = true;
+    #    :
+    #  })
+
     # Dhall
-    dhall
+    # dhall
     # dhall-lsp-server
 
     # Circom
-    circom
-    circom-lsp
+    # circom
+    # circom-lsp
 
     # Nix
     nil
@@ -61,6 +68,9 @@
     # Mail
     # himalaya
 
+    # Java
+    graalvm-ce
+
     # SSH and GPG
     openssh
     gnupg
@@ -99,8 +109,27 @@
     wezterm = {
       enable = true;
     };
+    spotify = {
+      enable = false;
+    };
   };
 
+  # programs.git = {
+  #   enable = true;
+  #   userName = "reo101";
+  #   # userEmail = "pavel.atanasov@limechain.tech";
+  #   userEmail = "pavel.atanasov2001@gmail.com";
+  #   signing = {
+  #     signByDefault = true;
+  #     key = "675AA7EF13964ACB";
+  #   };
+  #   # init.defaultBranch = "master";
+  #   lfs = {
+  #     enable = true;
+  #   };
+  # };
+
+
   home.file.".gnupg/gpg-agent.conf" = {
     text = ''
       allow-preset-passphrase