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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
    ;

  pylsp = with pkgs.unstable.python3Packages;
    python-lsp-server.overrideAttrs (old: {
      propagatedBuildInputs =
        old.propagatedBuildInputs
        ++ python-lsp-server.passthru.optional-dependencies.all;
    });

  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

        shfmt
        taplo

        # Python
        black
        python3Packages.isort
        python3Packages.mypy
        python3Packages.tox
        # TODO: how to install into pylsp's python env?
        # python-lsp-black
        # pyls-isort
        # pylsp-mypy

        ruff
      ];

    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 = ["${lua-language-server}/bin/lua-language-server"];
          settings.Lua = {
            completion.callSnippet = "Replace";
            telemetry.enable = false;
          };
        };
        marksman.cmd = ["${marksman}/bin/marksman"];
        pylsp = {
          cmd = ["${pylsp}/bin/pylsp"];
          settings.pylsp.plugins = {
            autopep8.enabled = false;
            flake8.ignore = ["E501"];
            pycodestyle.ignore = ["E501"];
            yapf.enabled = false;

            # See TODO above
            #black.enabled = true;
            #isort.enabled = true;
            #mypy.enabled = true;
          };
        };
      };

      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;
      })
    ];
  };
}