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inputs:

{ config, lib, pkgs, ... }:

let
  inherit (pkgs.unstable)
    clang
    clang-tools
    elixir_ls
    haskell-language-server
    marksman
    rust-analyzer-unwrapped
    lua-language-server

    vimPlugins;

  inherit (pkgs.unstable.python3Packages) python-lsp-server;

  luaFormat = inputs.self.lib.generators.lua { };

in
{
  imports = [
    (import ./development/latex.nix inputs)
  ];

  options = with lib; with luaFormat.lib; {
    vim.lsp = mkOption {
      description = ''
        Configure Neovim to use these LSP servers;
      '';
      type = with types; attrsOf (submodule {
        freeformType = luaFormat.type;

        options = {
          capabilities = mkOption {
            default = mkRaw "capabilities";
          };
          cmd = mkOption {
            type = with types; listOf str;
          };
          on_attach = mkOption {
            default = mkRaw "on_attach";
          };
        };
      });
      default = { };
    };
  };

  config = {
    # TODO: add cargo-info
    users.extraUsers.minijackson.packages = with pkgs.unstable; [
      bintools
      bacon
      clang
      clang-tools
      diffoscopeMinimal
      elixir
      gcc
      gdb
      graphviz
      man-pages
      python3Packages.ipython
      rr
      rustup
      watchexec

      # Python
      black
      python3Packages.isort
      python3Packages.mypy
      python3Packages.tox
    ];

    vim = {
      extraPlugins = with vimPlugins; [
        lsp_signature-nvim
        neodev-nvim
        nvim-lspconfig
        rust-tools-nvim
        clangd_extensions-nvim
        vim-grammarous
        playground
      ];

      variables = {
        rust_analyzer_path = "${rust-analyzer-unwrapped}/bin/rust-analyzer";
        luals_base_path = "${lua-language-server}";
        clangd_path = "${clang-tools}/bin/clangd";
      };

      lsp = {
        elixirls.cmd = [ "${elixir_ls}/bin/elixir-ls" ];
        hls.cmd = [ "${haskell-language-server}/bin/haskell-language-server" "--lsp" ];
        lua_ls = {
          cmd = [ "${lua-language-server}/bin/lua-language-server" ];
          settings.Lua.completion.callSnippet = "Replace";
        };
        marksman.cmd = [ "${marksman}/bin/marksman" ];
        pylsp.cmd = [ "${python-lsp-server}/bin/pylsp" ];
      };

      luaConfig = with lib; let
        toLua = luaFormat.generate;
        lspconfigFor = name: settings: "lspconfig['${name}'].setup ${toLua settings}";
        lspconfig = concatStringsSep
          "\n"
          (mapAttrsToList lspconfigFor config.vim.lsp);
      in
      mkMerge [
        "require('vim-dev')"
        "local lspconfig = require('lspconfig')"
        lspconfig
      ];
    };

    programs.zsh.interactiveShellInit = ''
      (( $+commands[rustc] )) && fpath+="$(rustc --print sysroot)/share/zsh/site-functions"
    '';

    programs.liboping.enable = true;

    documentation.dev.enable = true;

    boot.kernel.sysctl = {
      # For RR
      "kernel.perf_event_paranoid" = 1;
    };

    home-manager.users.minijackson = { config, ... }:
      {
        home.file.".clang-format".source = (pkgs.formats.yaml { }).generate
          "clang-format.yml"
          {
            BasedOnStyle = "Mozilla";
            ColumnLimit = 100;
            TabWidth = 4;
            IndentWidth = 4;
            UseTab = "ForIndentation";

            AlignAfterOpenBracket = "AlwaysBreak";
            AccessModifierOffset = -4;
            AlwaysBreakAfterDefinitionReturnType = "None";
            AlwaysBreakAfterReturnType = "None";
            AlwaysBreakTemplateDeclarations = true;
            BinPackArguments = false;
            BinPackParameters = false;
            BreakConstructorInitializers = "BeforeComma";
            Cpp11BracedListStyle = true;
            DerivePointerAlignment = false;
            NamespaceIndentation = "Inner";
            PenaltyBreakBeforeFirstCallParameter = 2;
            PointerAlignment = "Left";
            Standard = "Latest";
          };

        programs.direnv = {
          enable = true;
          enableBashIntegration = true;
          enableZshIntegration = true;

          nix-direnv.enable = true;
        };
      };

    nixpkgs.overlays = [
      (self: super: {
        inherit (self.unstable) nix-direnv direnv;
      })
    ];

  };
}