{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    utils.url = "github:numtide/flake-utils";

    # Plenary (required by crates-nvim)
    plenary-nvim = {
      url = "github:nvim-lua/plenary.nvim";
      flake = false;
    };

    # config

    # https://github.com/gpanders/editorconfig.nvim
    editorconfig-nvim = {
      url = "github:gpanders/editorconfig.nvim?rev=7d10fe6bc340fd783c0b61cf627dd235100284db";
      flake = false;
    };

    # explorer

    # https://github.com/kyazdani42/nvim-tree.lua
    nvim-tree-lua = {
      url = "github:kyazdani42/nvim-tree.lua?rev=0417d9148b6546bf4883b6e9750f992f980afbfe";
      flake = false;
    };

    # https://github.com/nvim-telescope/telescope.nvim
    telescope-nvim = {
      url = "github:nvim-telescope/telescope.nvim?rev=30e2dc5232d0dd63709ef8b44a5d6184005e8602";
      flake = false;
    };

    # https://github.com/nvim-telescope/telescope-live-grep-args.nvim
    telescope-live-grep-args-nvim = {
      url = "github:nvim-telescope/telescope-live-grep-args.nvim?rev=32b633b062d1168a2d18ad27994e5b4ef97f0a74";
      flake = false;
    };

    # formatter

    # https://github.com/sbdchd/neoformat
    neoformat = {
      url = "github:sbdchd/neoformat?rev=0ae951121da29a157d80db70c32679b428afffdc";
      flake = false;
    };

    # git

    # https://github.com/lewis6991/gitsigns.nvim
    gitsigns-nvim = {
      url = "github:lewis6991/gitsigns.nvim?rev=f98c85e7c3d65a51f45863a34feb4849c82f240f";
      flake = false;
    };

    # lsp

    # https://github.com/neovim/nvim-lspconfig
    nvim-lspconfig = {
      url = "github:neovim/nvim-lspconfig?rev=d4eb971db353ccf78cefb3be1b05483b69ec1e69";
      flake = false;
    };

    # https://github.com/glepnir/lspsaga.nvim
    lspsaga-nvim = {
      url = "github:glepnir/lspsaga.nvim?rev=e5d5a3243616af78f0d7b7b29aa700a16e516a23";
      flake = false;
    };

    # https://github.com/L3MON4D3/LuaSnip
    luaship = {
      url = "github:L3MON4D3/LuaSnip?rev=d36c063b7f6e701852f7880f1314656592a61b4f";
      flake = false;
    };

    # https://github.com/hrsh7th/nvim-cmp
    nvim-cmp = {
      url = "github:hrsh7th/nvim-cmp?rev=17a55b3d5498c617855d015bbcad0c872d10c879";
      flake = false;
    };

    # https://github.com/hrsh7th/cmp-nvim-lsp
    cmp-nvim-lsp = {
      url = "github:hrsh7th/cmp-nvim-lsp?rev=affe808a5c56b71630f17aa7c38e15c59fd648a8";
      flake = false;
    };

    # https://github.com/saadparwaiz1/cmp_luasnip
    cmp-luasnip = {
      url = "github:saadparwaiz1/cmp_luasnip?rev=a9de941bcbda508d0a45d28ae366bb3f08db2e36";
      flake = false;
    };

    # syntax

    # https://github.com/nvim-treesitter/nvim-treesitter
    nvim-treesitter = {
      url = "github:nvim-treesitter/nvim-treesitter?rev=a60aa7b2e1dd9219c6356f65ba48bdbd50090abd";
      flake = false;
    };

    # theme

    # https://github.com/nanozuki/tabby.nvim
    tabby-nvim = {
      url = "github:nanozuki/tabby.nvim?rev=916c9e56d043906a441cd9f905e2ca1f5c4dddb0";
      flake = false;
    };

    # https://github.com/nvim-lualine/lualine.nvim
    lualine-nvim = {
      url = "github:nvim-lualine/lualine.nvim?rev=a52f078026b27694d2290e34efa61a6e4a690621";
      flake = false;
    };

    # https://github.com/arkav/lualine-lsp-progress
    lualine-lsp-progress = {
      url = "github:/arkav/lualine-lsp-progress?rev=56842d097245a08d77912edf5f2a69ba29f275d7";
      flake = false;
    };

    # https://github.com/kyazdani42/nvim-web-devicons
    nvim-web-devicons = {
      url = "github:kyazdani42/nvim-web-devicons?rev=969728506c0175644a1d448f55e311ccdada7eaf";
      flake = false;
    };

    # https://github.com/catppuccin/nvim
    theme = {
      url = "github:catppuccin/nvim?rev=9ac18414f0446478024b19018d73b7ea14f6fc96";
      flake = false;
    };
  };

  outputs = inputs @ { self, nixpkgs, utils, ... }:
    let
      inputPlugins = [
        "plenary-nvim"
        # config
        "editorconfig-nvim"
        # explorer
        "nvim-tree-lua"
        "telescope-nvim"
        "telescope-live-grep-args-nvim"
        # formatter
        "neoformat"
        # git
        "gitsigns-nvim"
        # lsp
        "nvim-lspconfig"
        "lspsaga-nvim"
        "luaship"
        "nvim-cmp"
        "cmp-nvim-lsp"
        "cmp-luasnip"
        # syntax
        "nvim-treesitter"
        # theme
        "tabby-nvim"
        "lualine-nvim"
        "lualine-lsp-progress"
        "nvim-web-devicons"
        "theme"
      ];

      mkNvimPlugins = { lib, vimUtils, vimPlugins, ... }:
        let
          inherit (builtins) getAttr;
          inherit (lib) listToAttrs nameValuePair;

          buildPlugin = name: vimUtils.buildVimPluginFrom2Nix {
            name = name;
            src = getAttr name inputs;
          };

          buildPluginValuePair = n: nameValuePair n (buildPlugin n);

          customPlugins = listToAttrs (map buildPluginValuePair inputPlugins);
        in
        { vimPlugins = vimPlugins // customPlugins; };
    in
    {
      overlays = {
        default = final: prev: {
          myneovim = prev.callPackage ./. (mkNvimPlugins prev);
        };
      };
    } //
    utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };

        neovim = pkgs.callPackage ./. (mkNvimPlugins pkgs);
      in
      {
        apps.default = {
          type = "app";
          program = "${neovim}/bin/nvim";
        };

        packages.default = neovim;

        devShells.default = pkgs.mkShell {
          packages = [
            (neovim.override {
              enableDevIcons = true;
              enableTabby = true;
            })
            pkgs.stylua # lua formatter
          ];
        };
      });
}