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2026-10-14 09:54:23 -04:00

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  {lib, pkgs, config, ...}: let
    inherit (lib)
      mkIf
      mkMerge
    ;
    cfg = config.jfrikker;
    in {
      options.jfrikker = {
        enable = lib.mkEnableOption "Joe Frikker's configuration";
        desktop.enable = lib.mkEnableOption "Desktop (GUI) applications";
        redbook.enable = lib.mkEnableOption "Redbook-specific configuration";
        
        <<nix-options>>
      };
      
      config = mkIf cfg.enable (mkMerge [
        <<nix-configs>>
      ]);
    }

Packages

Home-manager "packages" are simply binaries that are placed on the path, without any attached configuration. The code blocks in this section contain package lists that go under the packages section above.

SBCL is the current leading open-source common lisp compiler. It requires any libraries you want to be availble to be installed using withPackages. Many lisp projects I work on have this overridden in a nix devshell I think I'd also like to use it for scripting / exploratory development, though, so I'm installing it globally with a useful set of libraries. I should curate this somewhat carefully so it doesn't get carried away…

  {
    home.packages = with pkgs; [
      rlwrap
      ((sbcl.withPackages (ps: with ps; [
        alexandria
        cl-mock
        dbi
        dbd-postgres
        defstar
        dexador
        fare-csv
        group-by
        local-time
        log4cl
        prove
        prove-asdf
        serapeum
        shasht
        slynk
        split-sequence
        str
        sxql-composer
        trivia
        trivial-mmap
        trivial-open-browser
        trivial-timeout
        uuid
      ])).overrideAttrs (o: {
        # Work around nixpkgs' new empty-PATH-segment check in makeWrapper; the
        # lisp wrapper intentionally uses a trailing `:` (ASDF "inherit config").
        installPhase = builtins.replaceStrings
          [ "--prefix CL_SOURCE_REGISTRY :" "--prefix ASDF_OUTPUT_TRANSLATIONS :" ]
          [ "--set CL_SOURCE_REGISTRY" "--set ASDF_OUTPUT_TRANSLATIONS" ]
          o.installPhase;
      }))
    ];
  }

rage is a rust implementation of age. It implements a simple system for generating public / private encryption keys, and encrypting / decrypting files with those keys. age-plugin-yubikey, as the name implies, allows generating and storing age keys on a Yubikey. rage is required over age when using age.el, because it supports pinentry. That allows it to prompt for yubikey pins using a dialog, rather than a command line prompt.

  {
    home.packages = with pkgs; [
      yubikey-manager
    ];
  }

dust, fd, ripgrep, and xh are rust re-implementations of a few longtime Linux command-line tools. They boost better speed, or simply more streamlined features.

Command Original
dust du
fd find
ripgrep grep
xh curl
  {
    home.packages = with pkgs; [
      dust
      fd
      ripgrep
      tokei
      xh
    ];
  }

ledger is how I manage my budget. It's a plain-text accounting tool that's really awesome.

  {
    home.packages = with pkgs; [
      ledger   
    ];
  }

nil is an LSP server for nix files.

  {
    home.packages = with pkgs; [
      nil
      nixfmt
    ];
  }

Magic Wormhole is a quick-and-easy way to securely transfer a file or directory between any two computers in the world, assuming that you have an out-of-band way to communicate a passphrase between them. Once installed, the actual command is wormhole.

  {
    home.packages = with pkgs; [
      magic-wormhole   
    ];
  }

These are the other programs I have installed globally. A few (like awscli, mysql-client, etc.) are still Redbook-specific; ideally I'd find another way to install them.

  (mkIf cfg.redbook.enable {
    home.packages = with pkgs; [
      openssh
      postgresql_15
    ];
  })

These programs require a full desktop environment:

  (mkIf cfg.desktop.enable {
    home.packages = with pkgs; [
      google-chrome
      nerd-fonts.jetbrains-mono
      nerd-fonts.symbols-only
      (iosevka-bin.override { variant = "Aile"; })
      (iosevka-bin.override { variant = "Etoile"; })
      (iosevka-bin.override { variant = "SGr-IosevkaTermSS14"; })
      nerd-fonts.symbols-only
      keymapp
      proton-pass
      wireshark
    ];

    fonts.fontconfig.enable = true;
  })
  (mkIf (cfg.redbook.enable && cfg.desktop.enable) {
    home.packages = with pkgs; [
      linear
      notion-app
      teams
    ];
  })

Slack

  (mkIf (cfg.redbook.enable && cfg.desktop.enable) {
    home.packages = with pkgs; [
      (slack.overrideAttrs {
        version = "4.50.143";
        src = pkgs.fetchurl {
          url = "https://downloads.slack-edge.com/desktop-releases/mac/arm64/4.50.143/Slack-4.50.143-macOS.dmg";
          hash = "sha256-f5oYi8NPKXWpDcowFYMUjptbQs4V9hK2bm1TuaQeJn0=";
        };
      })
    ];

    programs.emacs = {
      extraPackages = epkgs: with epkgs; [
        ox-slack
        slack
      ];
      extraConfig = builtins.readFile ./slack.el;
    };
  })
  (use-package lui
    :defer t
    :custom
    (lui-time-stamp-format "[%Y-%m-%d %H:%M]"))

  (use-package slack
    :commands slack-start
    :custom
    (slack-render-profile-images-p nil)
    (slack-buffer-function #'switch-to-buffer))

Program Configurations

This section contains applications whose config files will be generated by Home Manager. Home Manager calls these "programs" (as opposed to "packages", which are just binaries to put on the path).

Simple Programs

Although Home-Manager generates config files for these programs, they don't need their own dedicated configuration. I'm not sure what benefit there is to enabling jq as a Home Manager program, rather than just as an available package, but there doesn't seem to be a downside.

  {
    programs = {
      bash.enable = true;
      gh.enable = true;
      home-manager.enable = true;
      jq.enable = true;
      lazygit.enable = true;
      zoxide.enable = true;
    };
  }

Bat

bat is a less alternative that performs syntax highlighting for a variety of languages. It also provides syntax-highlighting versions of a few other commands. It's honestly not incredibly useful, but still nice to have.

  {
    programs.bat = {
      enable = true;
      config.style = "numbers";
    };
  }

Comma

  {
    programs.nix-index.enable = true;
    programs.nix-index-database.comma.enable = true;
  }

Direnv

direnv allows loading per-project paths as I navigate to their directories on the command line. I leverage this with the emacs envrc package.

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

Eza

eza is an ls replacement that offers icons, colors, and some easier command-line options.

  {
    programs.eza = {
      enable = true;
      enableBashIntegration = true;
      enableZshIntegration = true;
      icons = "auto";
    };
  }

Fzf

fzf offers a variety of fuzzy finders right from the shell. I haven't been using this, so I'll turn it off for now.

  {
    programs.fzf = {
      defaultCommand = "fd --type f";
      fileWidgetCommand = "fd --type f";
      fileWidgetOptions = ["--preview" "'bat --color=always --style=numbers --line-range=:500 {}'"];
      changeDirWidgetCommand = "fd --type d";
      tmux.enableShellIntegration = true;
    };
  }

Git

We all know what git does.

  {
    programs.git = {
      enable = true;
      settings.user.name = "Joe Frikker";
      settings.user.email = "joe@redbookcattle.com";
      settings.github.user = "joe@redbookcattle.com";
      settings.merge.conflictstyle = "zdiff3";
    };

    programs.delta = {
      enable = true;
      enableGitIntegration = true;
    };
  }

Helix

The best text editor ever? Heresy!

  {
    programs.helix = {
      enable = true;
      defaultEditor = true;

      settings.editor = {
        auto-format = false;
        auto-pairs = false;
        auto-save.after-delay.enable = true;
        auto-save.after-delay.timeout = 1000;
        cursorline = true;
        idle-timeout = 0;
        rulers = [120];
        text-width = 100;
        lsp.goto-reference-include-declaration = false;
        cursor-shape.insert = "bar";
        smart-tab.supersede-menu = true;
        whitespace.render.newline = "all";
      };

      settings.keys.normal.space = {
        space = "file_picker";
        "," = "buffer_picker";
        # b = "@:sh wezterm cli spawn --cwd . -- tig blame <C-r>%<ret>";
      };


      languages.language-server.eslint = {
        args = ["--stdio"];
        command = "vscode-eslint-language-server";
        config.nodePath = "";
        config.quiet = false;
        config.rulesCustomizations = [];
        config.run = "onType";
        config.validate = "on";
        config.codeAction.disableRuleComment.enable = true;
        config.codeAction.disableRuleComment.location = "separateLine";
        config.codeAction.showDocumentation.enable = true;
        config.problems.shortenToSingleLine = false;
      };

      languages.language-server.jdtls.config.java = {
        autobuild.enabled = true;
        completion.maxResults = 1000;
        format.settings.url = "https://raw.githubusercontent.com/google/styleguide/gh-pages/eclipse-java-google-style.xml";
      };

      languages.language-server.rust-analyzer.config.files.watcher = "client";

      languages.language = [
        {
          name = "typescript";
          language-servers = [ "typescript-language-server" "vscode-eslint-language-server" ];
          indent.tab-width = 4;
          indent.unit = "    ";
        }
        {
          name = "tsx";
          language-servers = [ "typescript-language-server" "vscode-eslint-language-server" ];
          indent.tab-width = 4;
          indent.unit = "    ";
        }
        {
          name = "java";
          indent.tab-width = 4;
          indent.unit = "    ";
        }
      ];
    };
  }

Nh

nh is an alternative frontend to home-manager and a few other nix tools that I'm trying out. It shows what's changing when you update your config, which is nice.

  {
    programs.nh = {
      enable = true;
    };
  }

Starship

starship gives me a nice shell prompt, mostly showing the versions of relevant software I have installed. It's shell-agnostic, so it works with both bash and zsh.

  {
    programs.starship = {
      enable = true;
      settings = {
        add_newline = false;
        container.disabled = true;
        git_branch.symbol = " ";
        git_status.ahead = "⇡\${count}";
        git_status.behind = "⇣\${count}";
        git_status.diverged = "⇕⇡\${ahead_count}⇣\${behind_count}";
        git_status.format = "([\\[\$conflicted\$staged\$ahead_behind\\]](\$style) )";
        java.symbol = " ";
        line_break.disabled = true;
        nix_shell.symbol = " ";
        nodejs.symbol = " ";
        package.disabled = true;
        palette = "catppuccin_frappe";
        python.symbol = " ";
        package.symbol = " ";
        rust.symbol = " ";
        docker_context.disabled = true;
        shell.disabled = false;
      };
    };
  }

Tmux

I'm using wezterm instead of tmux for now, so this is disabled, but I'm keeping the config here in case I need it later.

  {
    programs.tmux = {
      baseIndex = 1;
      clock24 = true;
      customPaneNavigationAndResize = true;
      historyLimit = 50000;
      enable = true;
      escapeTime = 0;
      keyMode = "vi";
      mouse = true;
      shell = pkgs.zsh + "/bin/zsh";
      shortcut = "Space";
      tmuxinator.enable = true;
      terminal = "xterm-256color";
      extraConfig = ''
  bind-key -T copy-mode-vi 'v' send -X begin-selection
  bind-key -T copy-mode-vi 'y' send -X copy-selection-and-cancel

  bind-key -T launcher g popup -h 100% -w 100% -E lazygit
  bind-key g switch-client -Tlauncher
  set -g default-command ""
      '';
    };
  }

Wezterm

wezterm is a fast terminal emulator and multiplexer. It is configured using lua. We'll define its config in two blocks, so we can get lua syntax highlighting in org. First, the nix configuration:

  (mkIf cfg.desktop.enable {
    programs.wezterm = {
      enable = true;
      extraConfig = ''
        local config = {}
        config.default_prog = { '${pkgs.zsh}/bin/zsh', '-l'}
        config.font_size = ${if pkgs.stdenv.isDarwin then "13.0" else "10.0"}
        '' + builtins.readFile ./wezterm.lua;
    };
  })

Then the real lua config:

  local config = {}

  <<wezterm-config>>

  return config
  config.default_prog = { '/Users/jfrikker/.nix-profile/bin/zsh', '-l' }
  config.font = wezterm.font 'Iosevka Term SS14'
  config.font_size = 13.0
  -- config.font = wezterm.font("JetBrains Mono")
  config.inactive_pane_hsb = {
    saturation = 0.5,
    brightness = 0.5,
  }
  config.pane_focus_follows_mouse = true
  config.switch_to_last_active_tab_when_closing_tab = true
  config.tab_bar_at_bottom = true
  config.use_fancy_tab_bar = false
  config.window_decorations = "RESIZE"

I use a workspace switcher plugin, bouned to cmd-s, that lets me quickly switch between per-project workspaces using a single OS window.

  local workspace_switcher = wezterm.plugin.require("https://github.com/MLFlexer/smart_workspace_switcher.wezterm")
  workspace_switcher.zoxide_path='~/.nix-profile/bin/zoxide'

Set up a default window layout when switching to a workspace that hasn't been opened in this session yet. This will create three tabs, caled "edit", "run", and "term", and open helix in the first one. I use "edit" for running the editor (obviously), "run" for building / running the application, and "term" for miscellaneous other tasks. I sometimes split the "run" window into multiple panes if the project requires multiple things to run simultaneously.

  wezterm.on('smart_workspace_switcher.workspace_switcher.created', function(window, path, workspace)
    local editor = window:active_tab()
    editor:set_title("edit")
    editor:panes()[1]:send_text("hx\n")
    local run = window:spawn_tab {}
    run:set_title "run"
    local term = window:spawn_tab {}
    term:set_title "term"
    editor:activate()
    end)

Put the current workspace name in the lower-right corner of the window. Taken from [https://alexplescan.com/posts/2024/08/10/wezterm/].

  local function segments_for_right_status(window)
     return {
        window:active_workspace(),
     }
  end

  wezterm.on('update-status',
             function(window, _)
                local SOLID_LEFT_ARROW = utf8.char(0xe0b2)
                local segments = segments_for_right_status(window)
                
                local color_scheme = window:effective_config().resolved_palette
                -- Note the use of wezterm.color.parse here, this returns
                -- a Color object, which comes with functionality for lightening
                -- or darkening the colour (amongst other things).
                local bg = wezterm.color.parse(color_scheme.background)
                local fg = color_scheme.foreground

                -- Each powerline segment is going to be coloured progressively
                -- darker/lighter depending on whether we're on a dark/light colour
                -- scheme. Let's establish the "from" and "to" bounds of our gradient.
                local gradient_to, gradient_from = bg
                gradient_from = gradient_to:lighten(0.2)
                
                -- Yes, WezTerm supports creating gradients, because why not?! Although
                -- they'd usually be used for setting high fidelity gradients on your terminal's
                -- background, we'll use them here to give us a sample of the powerline segment
                -- colours we need.
                local gradient = wezterm.color.gradient(
                   {
                      orientation = 'Horizontal',
                      colors = { gradient_from, gradient_to },
                   },
                   #segments -- only gives us as many colours as we have segments.
                )

                -- We'll build up the elements to send to wezterm.format in this table.
                local elements = {}

                for i, seg in ipairs(segments) do
                   local is_first = i == 1

                   if is_first then
                      table.insert(elements, { Background = { Color = 'none' } })
                   end
                   table.insert(elements, { Foreground = { Color = gradient[i] } })
                   table.insert(elements, { Text = SOLID_LEFT_ARROW })

                   table.insert(elements, { Foreground = { Color = fg } })
                   table.insert(elements, { Background = { Color = gradient[i] } })
                   table.insert(elements, { Text = ' ' .. seg .. ' ' })
                end

                window:set_right_status(wezterm.format(elements))
  end)

Now we'll set up some keybindings:

Key Action
s-s Switch Workspace
s– Vertical Split
s-\ Horizontal split
s-hjkl Switch to the pane in that direction
s-g Launch lazygit in a new tab. The tab closes when lazygit exits.
s-z Toggle full-screen zoom for the active pane.
s-t Launch a terminal in a new tab.
s-d Close the current tab (with confirmation).
s-123456789 Switch to the tab with the corresponding number.
  config.leader = { key = ' ', mods = 'CTRL', timeout_milliseconds = 10000 }
  config.keys = {
    {
  key = "s",
  mods = "CMD",
  action = workspace_switcher.switch_workspace(),
    },
    {
  key = "-",
  mods = "CMD",
  action = wezterm.action.SplitVertical {},
    },
    {
  key = "\\",
  mods = "CMD",
  action = wezterm.action.SplitHorizontal {},
    },
    {
  key = "h",
  mods = "CMD",
  action = wezterm.action.ActivatePaneDirection "Left",
    },
    {
  key = "j",
  mods = "CMD",
  action = wezterm.action.ActivatePaneDirection "Down",
    },
    {
  key = "k",
  mods = "CMD",
  action = wezterm.action.ActivatePaneDirection "Up",
    },
    {
  key = "l",
  mods = "CMD",
  action = wezterm.action.ActivatePaneDirection "Right",
    },
    {
  key = "g",
  mods = "CMD",
  action = wezterm.action.SpawnCommandInNewTab {
    args = { wezterm.home_dir .. "/.nix-profile/bin/zsh", "-l", "-i", "-c", "lazygit" }
  }
    },
    {
  key = "t",
  mods = "CMD",
  action = wezterm.action.SpawnCommandInNewTab {}
    },
    {
  key = 'z',
  mods = 'CMD',
  action = wezterm.action.TogglePaneZoomState,
    },
    {
  key = 'd',
  mods = 'CMD',
  action = wezterm.action.CloseCurrentTab { confirm = true },
    },
  }

  for i = 1, 9 do
    -- CTRL+ALT + number to activate that tab
    table.insert(config.keys, {
  key = tostring(i),
  mods = 'LEADER',
  action = wezterm.action.ActivateTab(i - 1),
    })
  end

Kitty

  (mkIf cfg.desktop.enable {
    programs.kitty = {
      enable = true;
      font = {
        name = "Iosevka Term SS14";
        package = pkgs.iosevka-bin.override { variant = "SGr-IosevkaTermSS14"; };
        size = 13;
      };
      themeFile = "Catppuccin-Frappe";
      keybindings = {
        "ctrl+1" = "goto_tab 1";
        "ctrl+2" = "goto_tab 2";
        "ctrl+3" = "goto_tab 3";
        "ctrl+4" = "goto_tab 4";
        "ctrl+5" = "goto_tab 5";
        "ctrl+6" = "goto_tab 6";
        "ctrl+7" = "goto_tab 7";
        "ctrl+8" = "goto_tab 8";
        "ctrl+9" = "goto_tab 9";
      };
    };
  })

Ghostty

Disabled until I can get it working on both linux and mac (if I want to).

  {
    programs.ghostty = {
      enable = false;
      package = pkgs.ghostty-bin;
      settings = {
        adjust-cell-height = "15%";
        font-family = "Iosevka Term SS14";
        font-size = 13;
      };
    };
  }

Zsh

This is my default shell for now. Unfortunately, nix requires a posix-compliant shell, so bash or zsh it is.

  {
    programs.zsh = {
      enable = true;
      oh-my-zsh.enable = true;
      syntaxHighlighting.enable = true;
      autosuggestion.enable = true;
      historySubstringSearch.enable = true;
      history.share = false;
      cdpath = ["~/source"];
    };
  }

Actually, nix really requires bash. This is a plugin that allows using zsh from nix-shell.

  {
    programs.zsh.plugins = [
      {
        name = "zsh-nix-shell";
        file = "nix-shell.plugin.zsh";
        src = pkgs.fetchFromGitHub {
          owner = "chisui";
          repo = "zsh-nix-shell";
          rev = "v0.7.0";
          sha256 = "149zh2rm59blr2q458a5irkfh82y3dwdich60s9670kl3cl5h2m1";
        };
      }
    ];
  }

LLM

  {
    programs.claude-code = {
      enable = true;
    };
    
    programs.emacs.init.usePackage = {
      claude-code = {
        enable = true;
        package = (epkgs: epkgs.trivialBuild {
          pname = "claude-code";
          version = "0.4.5";
          src = pkgs.fetchFromGitHub {
            owner = "stevemolitor";
            repo = "claude-code.el";
            rev = "03199df8b3a1e9cd4857f0851f7a912ba524aff3";
            sha256 = "sha256-5QJrWIu4EgnHcOqMwlrs2JBBx7aI9OaSJswesr6Apfk=";
          };
          packageRequires = [ epkgs.inheritenv ];
        });
        bindKeyMap."C-c c" = "claude-code-command-map";
        custom.claude-code-optimize-window-resize = false;
        custom.claude-code-terminal-backend = "'ghostel";
      };

      gptel = {
        enable = true;
        command = ["gptel"];
        bind."C-c g" = "gptel-menu";
        custom = {
          gptel-default-mode = "'org-mode";
          gptel-model = "'claude-sonnet-5";
          gptel-org-branching-context = true;
          gptel-include-reasoning = false;
        };
        config = ''
          <<emacs-gptel-config>>
        '';
      };

      gptel-agent = {
        enable = true;
        after = ["gptel"];
        config = ''
          <<emacs-gptel-agent-config>>
        '';
      };
    };
  }
  (setf (alist-get 'org-mode gptel-prompt-prefix-alist) "@user\n")
  (setf (alist-get 'org-mode gptel-response-prefix-alist) "@assistant\n")
  (gptel-make-tool
   :name "git_uncommitted_diff"
   :function (lambda ()
               (magit-git-output "diff" "HEAD"))
   :description "Return a unified diff of all uncommitted changes (staged and
  unstaged) in the current git repository, relative to HEAD. Note: this does
  not include brand-new untracked files that have never been added to the
  index."
   :args nil
   :category "git")

  (gptel-make-tool
   :name "git_head_commit_diff"
   :function (lambda ()
               (magit-git-output "show" "HEAD"))
   :description "Return the diff (including commit message) introduced by the
  HEAD commit in the current git repository, i.e. =git show HEAD=."
   :args nil
   :category "git")

  (gptel-make-tool
   :name "git_branch_diff"
   :function (lambda ()
               (let* ((upstream (magit-get-upstream-branch))
                      (merge-base (and upstream (magit-git-string "merge-base" "HEAD" upstream))))
                 (if (not merge-base)
                     "Could not determine upstream branch / merge base for the current branch."
                   (magit-git-output "diff" merge-base))))
   :description "Return a unified diff of all committed changes on the current
  branch relative to its upstream tracking branch's merge base. This shows
  everything this branch has added since it diverged from upstream."
   :args nil
   :category "git")
  (require 'gptel-agent-tools-introspection)
  (gptel-agent-update)

  (gptel-make-preset 'conversation
    :description "Preset with no tools, just for conversing"
    :backend "Claude"
    :model 'claude-sonnet-5
    :max-tokens 128000
    :cache t)

  (gptel-make-preset 'research
    :description "Preset for answering questions with web results"
    :parents 'conversation
    :confirm-tool-calls nil
    :tools '("WebFetch" "WebSearch"))

  (gptel-make-preset 'emacs-research
    :description "Preset for answering questions about the live emacs instance"
    :parents 'research
    :tools '(:append ("variable_completions" "command_completions" "function_completions"
             "variable_documentation" "function_documentation" "variable_value"
             "variable_source" "function_source" "symbol_manual_section"
             "library_source" "manual_node_contents" "manual_nodes" "manual_names"
             "features" "load_paths" "symbol_exists")))

  (gptel-make-preset 'coding
    :description "Preset for agentic coding"
    :parents 'research
    :tools '(:append ("Grep" "Read" "Glob" "Write" "Insert"
             "Edit" "Mkdir" "Diagnostics" "Bash" "git_uncommitted_diff" "git_head_commit_diff"
             "git_branch_diff")))

Age

  {
    home.sessionVariables = {
      PINENTRY_PROGRAM = "pinentry-mac";
    };
    
    home.packages = with pkgs; [
      rage
      age-plugin-yubikey
    ];
    
    programs.emacs = {
      extraPackages = epkgs: with epkgs; [
        age
      ];
    };
  }
  (use-package age
    :hook (after-init . age-file-enable)
    :custom
    (age-default-identity "~/source/dotfiles/keys/yubi1age.txt")
    (age-default-recipient "~/source/dotfiles/keys/myself.txt"))

Emacs

Emacs is a huge portion of this configuration, so although it's a home-manager "program", I'm breaking it out into its own top-level section. Many of the sections here have two code blocks: a nix code block listing the emacs packages to include, and an elisp code block to configure them in emacs.

We'll put the actual emacs configs into separate files, rather than into nix string literals. This helps with a few places where nix's string interpolation was causing problems.

  (mkIf cfg.desktop.enable {
    programs.emacs = {
      enable = true;
      init.enable = true;
      extraConfig = builtins.readFile ./emacs.el;
    };
  })

Keybindings

These keybindings are scattered throughout this file, I'm collecting them all here to make it easier to track them.

Key Normal Key Action Mode
s-b Switch project buffer
s-B Switch buffer
s-f C-x p f Open file in current project
s-F C-x p p Switch project
S-s C-x t RET Switch tab
C-c A Org agenda
C-c a Eglot code actions prog
C-c c Claude Code
C-c C Org capture
C-c D Show flymake diagnostics prog
C-c h Consult shell history
C-c i Eglot find implementation prog
C-c l Org store link
C-c n Org Roam prefix
C-c r Eglot rename prog
C-c u Cycle string inflection various
C-c M-g Magit file dispatch

Global Settings

These are just some general settings that apply everywhere. First, a few packages:

  {
    programs.emacs = {
      extraPackages = epkgs: with epkgs; [
        free-keys
      ];
    };

    programs.emacs.init.usePackage.emacs.enable = true;
  }
  (use-package emacs
    :bind (:map minibuffer-local-map
                ("M-s" . consult-history)
                ("M-r" . consult-history)))

Turn off some default settings that I don't find useful.

  (setopt save-interprogram-paste-before-kill t)
  (setopt enable-recursive-minibuffers t)
  (setopt line-spacing 0.15)

  (setopt mouse-wheel-tilt-scroll t)
  (setq-default truncate-lines t)

  (setopt tab-bar-show nil)

Don't show the welcome screen, and keep the scratch buffer empty by default. These are not useful after you've started emacs more than a few times.

  (setopt inhibit-startup-screen t)
  (setopt initial-scratch-message nil)

Turn off all the ugly graphical crap.

  (menu-bar-mode -1)
  (scroll-bar-mode -1)
  (tool-bar-mode -1)

I don't find emacs's backup files useful, and they seem to litter my directories. I could maybe see a use if I wasn't using git. But, git is so easy to use, that I pretty much use it everywhere. I don't need a poor man's local history.

Also, why do I have to set so many variables just to get emacs to stop putting extra files everywhere?

  {
    programs.emacs.init.usePackage.emacs.custom = {
      make-backup-files = false;
      create-lockfiles = false;
      auto-save-default = false;
    };
  }

Turn on view-mode automatically when the buffer is read-only. This just helps out with navigation a bit. I almost want to open files read-only by default, just so I can use view-mode (maybe with some other keybindings) all the time. But, I think one more invisible flag to manage is a bit much.

  {
    programs.emacs.init.usePackage.emacs.custom.view-read-only = true;
  }

I don't really do anything with sentences. But, I also never put two spaces after a period. So, at least this setting is correct.

  {
    programs.emacs.init.usePackage.emacs.custom.sentence-end-double-space = false;
  }

I kill whole lines way more than partial lines. If the cursor is at the front of a line, this will just kill the whole line instead of requiring two C-k C-k presses to make it happen. I'm not sure when I'd ever want it to kill the line without the trailing newline, but I guess the one time ever that I do, I'll have to press two more keys :(

  {
    programs.emacs.init.usePackage.emacs.custom.kill-whole-line = true;
  }

Show column numbers in the modeline. Now that I think about it, I'm not sure why I want this. I guess I could try turning it off someday?

  {
    programs.emacs.init.usePackage.emacs.custom.column-number-mode = true;
  }

Make sure which-key mode is always on. The on-the-fly keymap help it gives is indespensable.

  {
    programs.emacs.init.usePackage.which-key = {
      enable = true;
      hook = ["after-init"];
    };
  }

Automatically refresh dired buffers when switching to them, instead of requiring an explicit refresh.

  {
    programs.emacs.init.usePackage.dired = {
      enable = true;
      custom.dired-auto-revert-buffer = true;
    };
  }

Similarly, highlighting the line the cursor is on is really useful for figuring out where you are, especially on monitors with a lot of vertical space.

  {
    programs.emacs.init.usePackage.hl-line = {
      enable = true;
      hook = ["(after-init . global-hl-line-mode)"];
    };
  }

From the docs: "If ‘complete’, TAB first tries to indent the current line, and if the line was already indented, then try to complete the thing at point." Recommended by the corfu readme.

  {
    programs.emacs.init.usePackage.emacs.custom.tab-always-indent = "'complete";
  }

Set the cursor to be a bar. I'm not sure what the benefit would be of a block cursor, since the current character isn't really "selected" like it would be in Helix. I switch this to a box when in god mode / read-only buffers, like vim would.

  {
    programs.emacs.init.usePackage.emacs.config = ''
      (setq-default cursor-type 'bar)
    '';
  }

Repeat-mode takes care of eliminating some annoying duplicate keypresses. I mostly use repeat-mode for two-character commands that need to be repeated; devil also has some single-key-with-modifier repeats set up that only apply in that mode.

  {
    programs.emacs.init.usePackage.repeat = {
      enable = true;
      hook = ["after-init"];
    };
  }

Save the minibuffer history to disk, so recently-used options show up at the top of the picker across restarts.

  {
    programs.emacs.init.usePackage.savehist = {
      enable = true;
      hook = ["after-init"];
    };
  }

Let's unbind some builtin keys that I don't use. I'm not sure if I'll replace them with anything or not, but at a minimum it'll avoid accidental keypresses and clean up which-key output.

  (require 'bind-key)
  (unbind-key "C-x RET")
  (unbind-key "C-x #")
  (unbind-key "C-x 5")
  (unbind-key "C-x 6")
  (unbind-key "C-x \\")
  (unbind-key "C-x `")
  (unbind-key "C-x m")
  (unbind-key "C-x l")
  (unbind-key "C-x i")
  (unbind-key "C-x u")
  (unbind-key "C-x @")
  (unbind-key "C-x C-b")
  (unbind-key "C-x C-d")
  (unbind-key "C-x C-l")
  (unbind-key "C-x C-p")
  (unbind-key "C-x C-u")
  (unbind-key "C-x C-z")

The doom modeline looks nice. I'm turning off IRC notifications, because it was slow to update (and it would update after every command, slowing down everything). I don't need the workspace name when I have the tab bar at the top of the window. The other settings just clear up some space, and make things look at little nicer.

  {
    programs.emacs.init.usePackage.doom-modeline = {
      enable = true;
      hook = ["after-init"];
      custom = {
        doom-modeline-irc = false;
        doom-modeline-workspace-name = false;
        doom-modeline-buffer-encoding = false;
        doom-modeline-buffer-file-name-style = "'relative-to-project";
      };
      config = ''
        (doom-modeline-remove-segment 'vcs 'main)
      '';
    };
  }

Ligature mode combines character sequences like <= into a single on-screen glyph. It looks kind of cool, so I'm turning it on in prog mode. The enabled ligatures are font-specific, taken from the ligature wiki.

  {
    programs.emacs.init.usePackage.ligature = {
      enable = true;
      hook = ["(after-init . global-ligature-mode)"];
      config = ''
        (ligature-set-ligatures 'prog-mode 
                                '("--" "---" "==" "===" "!=" "!==" "=!="
                                  "=:=" "=/=" "<=" ">=" "&&" "&&&" "&=" "++" "+++" "***" ";;" "!!"
                                  "??" "???" "?:" "?." "?=" "<:" ":<" ":>" ">:" "<:<" "<>" "<<<" ">>>"
                                  "<<" ">>" "||" "-|" "_|_" "|-" "||-" "|=" "||=" "##" "###" "####"
                                  "#{" "#[" "]#" "#(" "#?" "#_" "#_(" "#:" "#!" "#=" "^=" "<$>" "<$"
                                  "$>" "<+>" "<+" "+>" "<*>" "<*" "*>" "</" "</>" "/>" "<!--" "<#--"
                                  "-->" "->" "->>" "<<-" "<-" "<=<" "=<<" "<<=" "<==" "<=>" "<==>"
                                  "==>" "=>" "=>>" ">=>" ">>=" ">>-" ">-" "-<" "-<<" ">->" "<-<" "<-|"
                                  "<=|" "|=>" "|->" "<->" "<~~" "<~" "<~>" "~~" "~~>" "~>" "~-" "-~"
                                  "~@" "[||]" "|]" "[|" "|}" "{|" "[<" ">]" "|>" "<|" "||>" "<||"
                                  "|||>" "<|||" "<|>" "..." ".." ".=" "..<" ".?" "::" ":::" ":=" "::="
                                  ":?" ":?>" "//" "///" "/*" "*/" "/=" "//=" "/==" "@_" "__" "???"
                                  "<:<" ";;;"))
      '';
    };
  }

Use variable-width fonts in text buffers. mixed-pitch-mode keeps most code blocks as monospace.

  {
    programs.emacs.init.usePackage.mixed-pitch = {
      enable = true;
      command = ["mixed-pitch-mode"];
      hook = ["text-mode"];
      init = ''
        (defun no-mixed-pitch ()
          (mixed-pitch-mode -1))

        (add-hook 'yaml-ts-mode-hook 'no-mixed-pitch)
        (add-hook 'mhtml-mode 'no-mixed-pitch)
        (add-hook 'nxml-mode 'no-mixed-pitch)
      '';
    };
  }

A basic ace-window setup. Allows switching between windows quickly (although avy can do the same…).

  {
    programs.emacs.init.usePackage.ace-window = {
      enable = true;
      bind = {
        "M-o" = "ace-window";
        "s-o" = "ace-window";
        "C-c o" = "ace-window";
      };
      custom = {
        aw-keys = "'(?a ?s ?d ?f ?g ?h ?j ?k ?l)";
        aw-dispatch-always = true;
      };
    };
  }

Set up a few project- / workspace-related key bindings.

  {
    programs.emacs.init.usePackage = {
      project = {
        enable = true;
        bind = {
          "s-f" = "project-find-file";
          "s-F" = "project-switch-project";
        };
      };

      tab-bar = {
        enable = true;
        hook = ["after-init"];
        bindLocal.tab-bar-mode-map."s-s" = "tab-bar-switch-to-tab";
      };
    };
  }

All the beeping is annoying. This flashes a huge icon over the screen, which is still annoying, but less so?

  {
    programs.emacs.init.usePackage.emacs.custom.visible-bell = true;
  }

I use tabs to manage multiple "workspaces". I don't tie a project to a tab or anything; often fixing a single bug might involve pulling in files from multiple projects. Rather, I open a file per bug / fix / issue, and leave it open until I'm done with that issue.

tab-bar-history-mode allows quickly rolling back window changes; it can be used to undo a context change when drilling into a help page or something. I've set up repeat mode to make it easier to move backward / forward through history.

  {
    programs.emacs.init.usePackage.tab-bar = {
      enable = true;
      hook = ["(after-init . tab-bar-history-mode)"];
      config = ''
        (bind-keys :repeat-map tab-bar-repeat-map
                   ("<left>" . tab-bar-history-back)
                   ("<right>" . tab-bar-history-forward))
      '';
    };
  }

Make compilation mode buffers auto-scroll to the first error:

  {
    programs.emacs.init.usePackage.compile.enable = true;
    programs.emacs.init.usePackage.compile.custom.compilation-scroll-output = true;
  }
  {
    programs.emacs.init.usePackage.register = {
      enable = true;
      defer = true;
      custom.register-preview-delay = 0.5;
      config = ''
        (advice-add 'register-preview :override #'consult-register-window)
      '';      
    };
  }

Window Placement

This section contains rules about where display-buffer should place windows. I guess I'm currently going for an IDE-style layout, with one main editor window, and auxiliary bottom and right side windows. I place windows in the bottom or on the right mostly depending on how wide I expect their content to be.

  {
    programs.emacs.init.usePackage = {
      window = {
        enable = true;
        custom = {
          split-width-threshold = 200;
          split-height-threshold = false;
          display-buffer-base-action = '''((display-buffer-reuse-window
             display-buffer-reuse-mode-window
             display-buffer-use-some-window))'';
          window-persistent-parameters = '''(cl-list* '(no-delete-other-windows . writable)
                    '(no-other-window . writable)
                    window-persistent-parameters)'';
        };
        init = ''
          <<emacs-window-init>>
        '';
        config = ''
          <<emacs-window-config>>
        '';
      };

      popper = {
        enable = true;
        hook = ["after-init" "(after-init . popper-echo-mode)"];
        bind = {
          "C-q" = "popper-toggle";
          "C-;" = "popper-cycle";
        };
        custom = {
          popper-display-control = false;
          popper-reference-buffers = ''(append jf/bottom-popups jf/right-popups)'';
        };
      };
    };
  }
  (defvar jf/bottom-popups
    '("\\*Flymake diagnostics .*"
      "\\*Embark Export: .*"
      "\\*Embark Collect .*"
      "\\*xref\\*"
      "\\*compilation\\*"
      "\\*pnpm:.*"
      "\\*sly-mrepl *"
      "\\*lispy-message\\*"
      "\\*occur\\*"
      ".*eshell\\*"
      "\\*SQL: .*"))

  (defvar jf/right-popups
    '("magit: *"
      "magit-log*"
      "\\*Messages\\*"
      "\\*trace-output\\*"
      "\\*EGLOT connections\\*"
      "magit-revision: .*"
      "\\*Help\\*"
      "\\*rustfmt\\*"
      "\\*slack: .*"
      "\\*forge: .*"
      "new-pullreq"
      "\\*claude:.*"
      "\\*Man .*"
      "\\*List .*"
      "\\*eldoc\\*"))
  (defun jf/window-children (window)
    (let ((result nil)
          (child (window-child window)))
      (while child
        (push child result)
        (setq child (window-next-sibling child)))
      (reverse result)))

  (defun jf/window-main-root (&optional frame)
    "Return FRAME's main (non-side) window or window subtree."
    (let* ((root (frame-root-window (or frame (selected-frame))))
           (children (jf/window-children root)))
      (if (seq-some (lambda (w) (window-parameter w 'window-side)) children)
          (seq-find (lambda (w) (not (window-parameter w 'window-side))) children)
        root)))

  (defun jf/window-leaves (window)
    "Return the live leaf windows in WINDOW's subtree."
    (if (window-live-p window)
        (list window)
      (mapcan #'jf/window-leaves (jf/window-children window))))

  (defun jf/topright-window (windows)
    "Return whichever of WINDOWS sits furthest up, then furthest right."
    (car (sort (copy-sequence windows)
               (lambda (a b)
                 (let ((top-a (nth 1 (window-edges a)))
                       (top-b (nth 1 (window-edges b))))
                   (if (= top-a top-b)
                       (> (nth 0 (window-edges a)) (nth 0 (window-edges b)))
                     (< top-a top-b)))))))

  (defun jf/display-buffer-right (buffer alist)
    "Display BUFFER on the right of the main editing area.

  Applies three rules, based on the shape of the frame's non-side windows:
  1. One window -> split it and show BUFFER in the new right window.
  2. Two windows side-by-side -> show BUFFER in the right one. If the
     right window is selected, swap the two windows first (keeping
     focus on the buffer that was active) so BUFFER doesn't evict it.
  3. Any other layout -> show BUFFER in the upper-rightmost window."
    (let ((main (jf/window-main-root)))
      (cond
       ((window-live-p main)
        (let* ((new (split-window main nil 'right))
               (width (max 1 (- (frame-width) 120)))
               (delta (window-resizable new (- width (window-width new)) t)))
          (window-resize new delta t)
          (window--display-buffer buffer new 'window alist)))
       ((and (window-left-child main)
             (= (length (jf/window-children main)) 2)
             (seq-every-p #'window-live-p (jf/window-children main)))
        (let* ((left (window-left-child main))
               (right (window-next-sibling left)))
          (when (eq (selected-window) right)
            (window-swap-states left right)
            (select-window left))
          (window--display-buffer buffer right 'reuse alist)))
       (t
        (window--display-buffer buffer (jf/topright-window (jf/window-leaves main)) 'reuse alist)))))
  (setq display-buffer-alist
        `(((or ,@jf/bottom-popups)
          (display-buffer-in-side-window)
          (side . bottom)
          (slot . 0)
          (window-height . 0.33))
         ((or ,@jf/right-popups)
          (display-buffer-reuse-window
           display-buffer-reuse-mode-window
           jf/display-buffer-right))))

Tramp

  {
    programs.emacs.init.usePackage.tramp = {
      enable = true;
      package = (epkgs: epkgs.tramp.overrideAttrs {
        version = "2.8.2.3";
        src = pkgs.fetchurl {
          url = "https://elpa.gnu.org/packages/tramp-2.8.2.3.tar";
          sha256 = "sha256-8Rsn29+i7LDGDKFR1Q7HTml86MRmibN409D9QaGBci0=";
        };
      });
      config = ''
        <<emacs-tramp-config>>
      '';
    };
  }
  (with-eval-after-load 'compile
      (remove-hook 'compilation-mode-hook
                   #'tramp-compile-disable-ssh-controlmaster-options))

Editing

This configuration affects general text editing, across all modes.

I find Emacs to be almost unusable on a normal keyboard unless there's some way to avoid all the modifier keys. I tried Evil mode first. But although I love Vim, it just seemed to be hiding too much of the Emacs native functionality. The keybindings were also much harder to configure. I tried God mode, which has the benefit of re-using the normal Emacs keybindings and commands. It was annoying, though, because some read-only buffers (like magit buffers) have their own "normal-mode" commands that don't use modifiers. It felt jarring to switch to "insert mode" to use those keys. It's also hard to repeat sequences of M-f, M-b, etc. I could have made a ton of repeat maps, but I'm worried that having too many repeat maps will also be annoying (I'll have to explicitly cancel them more frequently). In the end, I opted for Devil mode. It avoids modifier keys, and has its own devil-mode-only repeat maps that don't interfere when using normal modifier key sequences.

  {
    programs.emacs.init.usePackage.god-mode = {
      enable = true;
      bind."<escape>" = "(lambda () (interactive) (god-mode-all 1))";
      bindLocal.god-local-mode-map = {
        i = "(lambda () (interactive) (god-mode-all -1))";
        z = "repeat";
      };
      init = ''
        (defun my-god-mode-update-cursor-type ()
          (setq cursor-type (cond
                             ((and (featurep 'org-present) org-present-mode) nil)
                             ((or (and (featurep 'god-mode) god-local-mode) buffer-read-only) 'box)
                             (t 'bar))))
        
        (add-hook 'post-command-hook 'my-god-mode-update-cursor-type)
      '';
      config = ''
        (with-eval-after-load 'which-key
          (which-key-enable-god-mode-support))
      '';
    };
  }

Avy allows jumping to any place on the screen with just a few keystrokes. I've stolen most of these ideas from Karthinks' article Avy can do Anything. I need to find more uses for this, in line with his article.

  {
    programs.emacs.init.usePackage = {
      avy = {
        enable = true;
        functions = ["avy-action-oneshot"];
        init = ''
          (defun avy-goto-char-timer-embark ()
            (interactive)
            (let ((avy-action-oneshot
                   (lambda (pt)
                     (goto-char pt)
                     (embark-act))))
              (avy-goto-char-timer)))
        '';
        bind = {
          "C-j" = "avy-goto-char-timer";
          "M-j" = "avy-goto-char-timer-embark";
        };
      };

      embark = {
        enable = true;
        bind."C-." = "embark-act";
      };

      lispy.bindLocal.lispy-mode-map."C-j" = "avy-goto-char-timer";
      org.bindLocal.org-mode-map."C-j" = "avy-goto-char-timer";
    };
  }

Just "silently" wrap when searching at the bottom of a document.

  {
    programs.emacs.init.usePackage.isearch = {
      enable = true;
      custom.isearch-wrap-pause = "'no-ding";
    };
  }
  {
    programs.emacs.init.usePackage.edit-indirect = {
      enable = true;
      bind."C-x 4 n" = "edit-indirect-region";
    };
  }

Some auto-formatting stuff

  {
    programs.emacs.init.usePackage.apheleia = {
      enable = true;
      config = ''
        (push '(prisma-format "prisma" "format" "--schema" filepath) apheleia-formatters)
      '';
    };
  }

Workflow

  {
    programs.emacs.init.usePackage.buffer-terminator = {
      enable = true;
      hook = ["after-init"];
    };
  }

Language Support

  {
    programs.emacs = {
      extraPackages = epkgs: with epkgs; [
        (treesit-grammars.with-grammars (g: [
          g.tree-sitter-bash
          g.tree-sitter-commonlisp
          g.tree-sitter-css
          g.tree-sitter-dockerfile
          g.tree-sitter-dot
          g.tree-sitter-elisp
          g.tree-sitter-graphql
          g.tree-sitter-gitcommit
          g.tree-sitter-gitignore
          g.tree-sitter-haskell
          g.tree-sitter-html
          g.tree-sitter-java
          g.tree-sitter-javascript
          g.tree-sitter-jq
          g.tree-sitter-json
          g.tree-sitter-json5
          g.tree-sitter-just
          g.tree-sitter-ledger
          g.tree-sitter-llvm
          g.tree-sitter-make
          g.tree-sitter-nix
          g.tree-sitter-org
          g.tree-sitter-prisma
          g.tree-sitter-python
          g.tree-sitter-rust
          g.tree-sitter-rust-format-args
          g.tree-sitter-sql
          g.tree-sitter-toml
          g.tree-sitter-tsx
          g.tree-sitter-typescript
          g.tree-sitter-xml
          g.tree-sitter-yaml
        ]))
      ];
    };
  }
  {
    programs.emacs.init.usePackage = {
      electric-pair = {
        enable = true;
        hook = [ "after-init" ];
      };

      emacs = {
        config = ''
          (setq-default indent-tabs-mode nil)
          (setq-default tab-width 4)
        '';
      };

      ediff-wind = {
        enable = true;
        custom = {
          ediff-split-window-function = "'split-window-horizontally";
        };
      };
    };
  }

Show a vertical bar 100 characters out; ideally I don't want lines longer than this. 100 characters is about the max you can have and still fit two files side-by-side on the screen.

  {
    programs.emacs.init.usePackage.emacs = {
      enable = true;
      config = ''(setq-default fill-column 120)'';
    };

    programs.emacs.init.usePackage.display-fill-column-indicator = {
      enable = true;
      hook = ["prog-mode"];
    };
  }

I had some weird problems with jsx code where the default M-q would just do a text fill rather than a re-indent. The solution seems to be to only do the syntax-ppss stuff if tree-sitter isn't available? It seems to work for now anyway…

  {
    programs.emacs.init.usePackage.prog-mode = {
      enable = true;
      defer = true;
      config = ''
        <<emacs-prog-mode-config>>
      '';
    };
  }
  (defun my-prog-fill-reindent-defun (&optional argument)
    "Refill or reindent the paragraph or defun that contains point.

  If the point is in a string or a comment, fill the paragraph that
  contains point or follows point.

  Otherwise, reindent the function definition that contains point
  or follows point."
    (interactive "P")
    (save-excursion
      (let ((treesit-text-node
             (and (treesit-available-p)
                  (treesit-parser-list)
                  (treesit-node-match-p
                   (treesit-node-at (point)) 'text t))))
        (if (or treesit-text-node
                (and (not (and (treesit-available-p) (treesit-parser-list))) (nth 8 (syntax-ppss)))
                (re-search-forward "\\s-*\\s<" (line-end-position) t))
            (fill-paragraph argument (region-active-p))
          (beginning-of-defun)
          (let ((start (point)))
            (end-of-defun)
            (indent-region start (point) nil))))))

  (advice-add 'prog-fill-reindent-defun :override #'my-prog-fill-reindent-defun)
  {
    programs.emacs.init.usePackage.ansi-color = {
      enable = true;
      defer = true;
      hook = ["(compilation-filter . ansi-color-compilation-filter)"];
    };
  }

Flymake

  {
    programs.emacs.init.usePackage.flymake = {
      enable = true;
      command = ["flymake-show-project-diagnostics" "flymake-goto-next-error" "flymake-goto-prev-error"];
      bindLocal.flymake-project-diagnostics-mode-map = {
        "q" = "quit-window";
      };
    };

    programs.emacs.init.usePackage.prog-mode = {
      enable = true;
      bindLocal.prog-mode-map = {
        "C-c D" = "flymake-show-project-diagnostics";
        "M-n" = "flymake-goto-next-error";
        "M-p" = "flymake-goto-prev-error";
      };
    };
  }

Eglot

  {
    programs.emacs.init.usePackage.eglot.enable = true;
  }

I don't like UI elements that insert fake text into the file. They mess up the spacing in the file, and can make everything too wide.

  {
    programs.emacs.init.usePackage.eglot = {
      custom = {
        eglot-ignored-server-capabilities = "'(:inlayHintProvider :semanticTokensProvider)";
        eglot-code-action-indications = false;
        eglot-events-buffer-config = "'(:size 300000 :format full)";
      };
      config = "(add-hook 'eglot-managed-mode-hook (lambda () (eglot-inlay-hints-mode -1)) nil t)";
    };
  }

Set up a few useful eglot keys.

  {
    programs.emacs.init.usePackage.eglot.bindLocal.eglot-mode-map = {
      "C-c a" = "eglot-code-actions";
      "C-c r" = "eglot-rename";
      "C-c i" = "eglot-find-implementation";
    };
  }

Eglot's yasnippet support uses the tab key, but I also use the tab key both for indentation, and for completion. That makes it really annoying to use; don't use yasnippet with eglot.

  {
    programs.emacs.init.usePackage.eglot.config = "(add-to-list 'eglot-stay-out-of 'yasnippet)";
  }

Rust

  {
    programs.emacs.init.usePackage.rust-mode = {
      enable = true;
      mode = ["\"\\\\.rs\\\\'\""];
      custom.rust-mode-treesitter-derive = true;
    };
  }

YAML

  {
    programs.emacs.init.usePackage.yaml-pro = {
      enable = true;
      init = ''
        <<emacs-yaml-pro-init>>
      '';
      hook = ["yaml-ts-mode"];
    };
  }
  (defun yaml-validate ()
    (interactive)
    (compile (concat "yamllint -d '{extends: default, rules: {indentation: {indent-sequences: false}, braces: {max-spaces-inside: 1}}}' " (buffer-file-name)) t))

Lisp

  {
    programs.emacs.init.usePackage.inf-lisp = {
      enable = true;
      custom.inferior-lisp-program = "\"sbcl\"";
    };

    programs.emacs.init.usePackage.sly = {
      enable = true;
      command = ["sly"];
    };

    programs.emacs.init.usePackage.sly-macrostep = {
      enable = true;
      after = ["sly"];
    };

    programs.emacs.init.usePackage.lispy = {
      enable = true;
      package = (epkgs: with epkgs;
        lispy.overrideAttrs {
          packageRequires = [
            ace-window iedit swiper zoutline hydra
          ];
          ignoreCompilationError = true;
        });
      hook = ["emacs-lisp-mode-hook" "lisp-mode-hook" "lisp-data-mode-hook"];
      bindLocal.lispy-mode-map = {
        i = "(lambda ()
               (interactive)
               (if (and (featurep 'god-mode) god-global-mode)
                   (god-mode-all -1)
                 (special-lispy-tab)))";
      };
      custom.lispy-compat = "'(god-mode edebug)";
    };
  }

Typescript

  {
    programs.emacs.init.usePackage = {
      typescript-ts-mode = {
        enable = true;
        mode = ["\"\\\\.ts\\\\'\"" "(\"\\\\.tsx\\\\'\" . tsx-ts-mode)"];
        bindLocal = {
          typescript-ts-mode-map = {
            "C-c '" = "my/edit-indirect-tagged-template-at-point";
          };
          tsx-ts-mode-map = {
            "C-c '" = "my/edit-indirect-tagged-template-at-point";
          };
        };
        custom.typescript-ts-mode-indent-offset = 2;
        config = ''
          <<emacs-typescript-ts-mode-config>>
        '';
      };

      prisma-ts-mode = {
        enable = true;
        mode = ["\"\\\\.prisma\\\\'\""];
      };

      eglot = {
        config = ''(add-to-list 'eglot-server-programs '((prisma-ts-mode) "prisma-language-server" "--stdio"))'';
      };

      pnpm-mode = {
        enable = true;
        command = ["pnpm-mode-pnpm-run"];
      };

      graphql-ts-mode = {
        enable = true;
        command = ["graphql-ts-mode"];
      };

      jq-mode = {
        enable = true;
        mode = ["\"\\\\.jq\\\\'\""];
        interpreter = ["jq"];
      };
    };
  }
  (defun my-tsx-ts-mode--indent-compatibility-b893426 ()
    "Indent rules helper, to handle different releases of tree-sitter-tsx.
  Check if a node type is available, then return the right indent rules."
    ;; handle https://github.com/tree-sitter/tree-sitter-typescript/commit/b893426b82492e59388a326b824a346d829487e8
    (condition-case nil
        (progn (treesit-query-capture 'tsx '((jsx_fragment) @capture))
               `(((match "<" "jsx_fragment") parent 0)
                 ((parent-is "jsx_fragment") parent typescript-ts-mode-indent-offset)))
      (treesit-query-error
       `(((match "<" "jsx_text") parent 0)
         ((parent-is "jsx_text") grand-parent typescript-ts-mode-indent-offset)))))
  (advice-add 'tsx-ts-mode--indent-compatibility-b893426 :override #'my-tsx-ts-mode--indent-compatibility-b893426)

  (defvar my/edit-indirect-tag-modes
    '(("graphql" . graphql-ts-mode)
      ("gql" . graphql-ts-mode)
      ("sql" . sql-mode)
      ("css" . css-mode))
    "Map of tagged-template tag names to major modes.")

  (defun my/edit-indirect--node-bounds (node)
    "Return (BEG . END) for NODE's contents, excluding delimiters."
    (cons (1+ (treesit-node-start node))
          (1- (treesit-node-end node))))

  (defun my/edit-indirect-tagged-template-at-point ()
    (interactive)
    (let* ((node (treesit-node-at (point)))
           (tmpl-node (treesit-parent-until
                       node
                       (lambda (n) (equal (treesit-node-type n) "template_string"))))
           (str-node (unless tmpl-node
                       (treesit-parent-until
                        node
                        (lambda (n) (equal (treesit-node-type n) "string")))))
           (target-node (or tmpl-node str-node)))
      (unless target-node
        (user-error "Point is not inside a string or template literal"))
      (let* ((tagged-node (and tmpl-node (treesit-node-parent tmpl-node)))
             (tag-node (and tagged-node
                            (equal (treesit-node-type tagged-node) "call_expression")
                            (treesit-node-child-by-field-name tagged-node "function")))
             (tag-name (and tag-node (treesit-node-text tag-node t)))
             (mode (cond
                    (tag-name (or (cdr (assoc tag-name my/edit-indirect-tag-modes))
                                  major-mode))
                    (t 'text-mode)))
             (bounds (my/edit-indirect--node-bounds target-node))
             (buf (edit-indirect-region (car bounds) (cdr bounds) t)))
        (with-current-buffer buf
          (funcall mode)))))

Java

  {
    programs.emacs.init.usePackage = {
      java-ts-mode = {
        enable = true;
        init = ''(push '(java-mode . java-ts-mode) major-mode-remap-alist)'';
        config = ''
          <<emacs-java-ts-mode-config>>
        '';
      };
    };
  }
  (push `((n-p-gp nil "block" "lambda_expression") parent-bol java-ts-mode-indent-offset)
        (cdar java-ts-mode--indent-rules))
  (push `((n-p-gp "}" "block" "lambda_expression") parent-bol 0)
        (cdar java-ts-mode--indent-rules))

  (add-hook 'java-mode-hook (lambda () (c-set-offset 'arglist-intro '+)))

  (defvar jf/class-name-to-file-search-path (list "src/main/java" "src/test/java"))

  (defun jf/class-name-to-file (class-name)
    (let ((root (project-root (project-current t)))
          (fragment (format "%s.java" (replace-regexp-in-string "\\." "/" class-name)))
          (result))
      (dolist (p jf/class-name-to-file-search-path result)
        (unless result
          (let ((path (format "%s/%s" p fragment)))
            (when (file-exists-p (concat root path))
              (setq result path)))))))

  (defun jf/compile-class-to-file ()
    (jf/class-name-to-file (concat (match-string 1) (match-string 2))))

                                        ;(add-to-list 'compilation-error-regexp-alist-alist
                                        ;             '(java-stack-trace .
                                        ;                                ("^[[:space:]]*at \\(\\(?:[[:lower:]]+\\.\\)+\\)[^(]+(\\([[:alnum:]]+\\)\\.java:\\([[:digit:]]+\\))"
                                        ;                                 jf/compile-class-to-file 3)))
                                        ;(add-to-list 'compilation-error-regexp-alist 'java-stack-trace)

Nix

  {
    programs.emacs.init.usePackage = {
      nix-mode = {
        enable = true;
        mode = ["\"\\\\.nix\\\\'\""];
      };
      
      nix-flake = {
        enable = true;
        init = ''
          (defun project-nix-flake ()
            (interactive)
            (nix-flake (project-root (project-current t))))
          (bind-keys ("C-x p n" . project-nix-flake))
        '';
        command = [ "nix-flake" ];
      };
    };
  }

xs

SQL

  {
    programs.emacs.init.usePackage.sql-indent = {
      enable = true;
      hook = ["(sql-mode . sqlind-minor-mode)"];
    };
  }

Haskell

  {
    programs.emacs.init.usePackage.haskell-ts-mode = {
      enable = true;
      mode = ["\"\\\\.hs\\\\'\""];
      custom.haskell-ts-use-indent = true;
    };
  }

Lua

  {
    programs.emacs.init.usePackage.lua-mode = {
      enable = true;
      mode = ["\"\\\\.lua\\\\'\""];
    };
  }

Envrc

  {
    programs.emacs.init.usePackage.envrc = {
      enable = true;
      hook = ["(after-init . envrc-global-mode)"];
      custom.envrc-show-summary-in-minibuffer = false;
    };
  }

Magit

  {
    programs.emacs.init.usePackage = {
      magit = {
        enable = true;
        bind = {
          "s-g" = "magit-status";
          "C-x g" = "magit-status";
          "C-c f" = "magit-status";
        };
        custom = {
          magit-save-repository-buffers = "'dontask";
          magit-commit-show-diff = false;
        };
        config = ''
          (set-face-attribute 'git-commit-summary nil :inherit nil)
          (defun magit-fetch-all-on-load ()
            (magit-run-git-async "fetch" "--all"))
          (add-hook 'magit-status-mode-hook 'magit-fetch-all-on-load)
          (remove-hook 'magit-status-headers-hook 'magit-insert-tags-header)
        '';
      };

      forge = {
        enable = true;
        after = ["magit"];
        config = ''
        (add-hook 'forge-edit-post-hook 'forge-create-pullreq-insert-single-commit-message)
        (setopt forge-status-buffer-default-topic-filters
                (forge--topics-spec :type 'topic :active nil :state 'open :order 'newest))
        '';
      };

      diff-hl = {
        enable = true;
        hook = [
          "(after-init . global-diff-hl-mode)"
          "(magit-post-refresh . diff-hl-magit-post-refresh)"
        ];
      };

      consult-gh = {
        enable = true;
        command = ["consult-gh"];
      };

      git-timemachine = {
        enable = true;
        command = ["git-timemachine"];
      };
    };
  }

Vertico

  {
    programs.emacs.init.usePackage = {
      consult = {
        enable = true;
        bind = {
          "s-b" = "consult-project-buffer";
          "C-c h" = "consult-history";
          "C-x b" = "consult-buffer";
          "s-B" = "consult-buffer";
          "C-x 4 b" = "consult-buffer-other-window";
          "C-x 5 b" = "consult-buffer-other-frame";
          "C-x r b" = "consult-bookmark";
          "C-x p b" = "consult-project-buffer";
          "M-#" = "consult-register-load";
          "M-'" = "consult-register-store";
          "C-M-#" = "consult-register";
          "M-y" = "consult-yank-pop";
          "M-g e" = "consult-compile-error";
          "M-g f" = "consult-flymake";
          "M-g g" = "consult-goto-line";
          "M-g M-g" = "consult-goto-line";
          "M-g o" = "consult-org-heading";
          "M-g m" = "consult-mark";
          "M-g k" = "consult-global-mark";
          "M-g i" = "consult-imenu";
          "M-g I" = "consult-imenu-multi";
          "M-s r" = "consult-ripgrep";
          "M-s l" = "consult-line";
          "M-s L" = "consult-line-multi";
          "M-s e" = "consult-isearch-history";
        };
        custom = {
          consult-narrow-key = ''"<"'';
        };
        config = ''
          (consult-customize
           consult-theme :preview-key '(:debounce 0.2 any)
           consult-ripgrep consult-git-grep consult-grep consult-man
           consult-bookmark consult-recent-file consult-xref
           consult-source-bookmark consult-source-file-register
           consult-source-recent-file
           consult-source-buffer
           ;; :preview-key "M-."
           consult-source-project-recent-file
           :preview-key '(:debounce 0.4 any))
        '';
      };

      consult-eglot.enable = true;

      isearch = {
        enable = true;
        bindLocal.isearch-mode-map = {
          "M-e" = "consult-isearch-history";
          "M-s e" = "consult-isearch-history";
          "M-s l" = "consult-line";
          "M-s L" = "consult-line-multi";
        };
      };

      xref = {
        enable = true;
        defer = true;
        custom = {
          xref-show-xrefs-function = "'consult-xref";
          xref-show-definitions-function = "'consult-xref";
        };
      };
      
      embark-consult = {
        enable = true;
        defer = true;
      };

      orderless = {
        enable = true;
        defer = true;
      };
      
      vertico = {
        enable = true;
        hook = ["after-init"];
        custom = {
          vertico-count = 25;
        };
      };

      minibuffer = {
        enable = true;
        custom = {
          completion-styles = "'(orderless basic)";
        };
      };
      
      marginalia = {
        enable = true;
        hook = ["after-init"];
      };
      
      corfu = {
        enable = true;
        hook = ["(after-init . global-corfu-mode)"];
        custom = {
          corfu-cycle = true;
          corfu-popupinfo-mode = false;
          corfu-quit-at-boundary = false;
          corfu-on-exact-match = "'show";
        };
      };

      cape = {
        enable = true;
        defer = true;
        init = "(add-hook 'completion-at-point-functions 'cape-file)";
      };
    };
  }

Org

  {
    programs.emacs.init.usePackage = {
      org = {
        enable = true;
        bind = {
           "C-c A" = "org-agenda";
           "C-c C" = "org-capture";
           "C-c l" = "org-id-store-link";
        };
        custom = {
          org-babel-load-languages = "'((emacs-lisp . t) (sql . t))";
          org-confirm-babel-evaluate = false;
          org-link-keep-stored-after-insertion = true;
          org-capture-templates = ''
            '(("t" "Todo" entry
              (here)
              "** TODO %?\n:LOGBOOK:\n- State \"TODO\" %U\n:END:\n")
             ("w" "Work stuff")
             ("wp" "Work Project" entry
              (file+headline "~/org/todo/work.org.age" "Next Actions")
              "*** PROJ %?\n- State \"PROJ\" %U\n")
             ("wa" "Work Next Action" entry
              (file+headline "~/org/todo/work.org.age" "Next Actions")
              "*** TODO %?\n- State \"TODO\" %U\n")
             ("p" "Personal stuff")
             ("pp" "Personal Project" entry
              (file+headline "~/org/todo/personal.org.age" "Next Actions")
              "*** PROJ %?\n- State \"PROJ\" %U\n")
             ("pa" "Personal Next Action" entry
              (file+headline "~/org/todo/personal.org.age" "Next Actions")
              "*** TODO %?\n- State \"TODO\" %U\n"))
          '';
          org-agenda-files = '''("~/org/todo/work.org" "~/org/todo/personal.org.age")'';
          org-agenda-todo-ignore-scheduled = "'future";
          org-agenda-tags-todo-honor-ignore-options = true;
          org-enforce-todo-dependencies = true;
          org-agenda-dim-blocked-tasks = "'invisible";
        };
        config = ''
          (set-face-attribute 'org-level-1 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-2 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-3 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-4 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-5 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-6 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-7 nil :font "Iosevka Aile")
          (set-face-attribute 'org-level-8 nil :font "Iosevka Aile")
        '';
      };

      emacs = {
        hook = ["(org-mode . visual-line-mode)"];
      };
      
      org-modern = {
        enable = true;
        hook = ["org-mode"];
      };

      org-roam = {
        enable = true;
        defer = true;
      };

      verb = {
        enable = true;
        defer = true;
      };

      visual-fill-column = {
        enable = true;
        defer = true;
      };
    };
  }
  ;; (require 'org-roam)
  ;; (bind-keys ("C-c n l" . org-roam-buffer-toggle)
  ;;            ("C-c n f" . org-roam-node-find)
  ;;            ("C-c n g" . org-roam-graph)
  ;;            ("C-c n i" . org-roam-node-insert)
  ;;            ("C-c n c" . org-roam-capture))

  ;; (setq org-roam-node-display-template (concat "${title:*} " (propertize "${tags:10}" 'face 'org-tag)))
  ;; (org-roam-db-autosync-mode)

  ;; (define-key org-mode-map (kbd "C-c C-r") verb-command-map)

Presentations

org-present is a cool little package. It lets you give presentations with org mode. Each top-level heading turns into a slide. When you switch to present mode, org-present removes all other windows, narrows the buffer to only one top-level heading at a time, and exposes keys to quickly navigate forward / backward between slides. It also exposes entry / exit hooks. Those hooks allow you to add custom styling to present mode. For example, you could make all the text bigger.

  {
    programs.emacs.init.usePackage.org-present = {
      enable = true;
      command = ["org-present"];
      init = ''
        <<emacs-org-present-init>>
      '';
      config = ''
        <<emacs-org-present-config>>
      '';
    };
  }

Let's customize the window appearance when presenting. First, we'll make fonts larger, by multiplying them by a constant factor. We'll use face-remap for that. When face-remap changes a face, it returns a "cookie" that can be used to restore the face to its old size. We'll store those cookies in a buffer-local variable.

When we enter present mode, we'll enlarge the fonts.

  (defvar-local my/org-present-face-remapping-cookies nil)
  (add-hook 'org-present-mode-hook
            (lambda ()
              (require 'face-remap)
              (setq-local my/org-present-face-remapping-cookies nil)
              (dolist (face '((default :height 2.0)
                              (header-line :height 4.0 :background "#303446")
                              (org-document-title :height 1.75)
                              (org-code :height 2.0)
                              (org-verbatim :height 2.0)
                              (org-block :height 1.25)
                              (org-block-begin-line :height 0.7)
                              (org-level-1 :height 3.0)
                              (org-level-2 :height 3.0)
                              (org-level-3 :height 3.0)
                              (org-level-4 :height 3.0)
                              (org-level-5 :height 3.0)
                              (org-level-6 :height 3.0)
                              (org-level-7 :height 3.0)
                              (org-level-8 :height 3.0)))
                (push (apply #'face-remap-add-relative face) my/org-present-face-remapping-cookies))))
  (add-hook 'org-present-mode-quit-hook
            (lambda ()
              (dolist (cookie my/org-present-face-remapping-cookies)
                (face-remap-remove-relative cookie))))

Let's add some empty space at the top as a margin. This is kind of a hack, but 🤷.

  (add-hook 'org-present-mode-hook
            (lambda () (setq header-line-format " ")))
  (add-hook 'org-present-mode-quit-hook
            (lambda () (setq header-line-format nil)))

To make this look more like a "real" presentation, we want to center the text in the window. We'll use visual-fill-column to do that. It does two things:

  1. Causes text to wrap, like visual-line-mode, but it wraps at the fill column instead of the edge of the window.
  2. Centers the text block within the window (based on the fill column).

Let's set it up when we enter present mode:

  (add-hook 'org-present-mode-hook
            (lambda ()
              (visual-fill-column-mode 1)
              (setq visual-fill-column-center-text t)))
  (add-hook 'org-present-mode-quit-hook
            (lambda ()
              (visual-fill-column-mode 0)))

We want to display inline images, of course.

  (add-hook 'org-present-mode-hook
            (lambda ()
              (org-display-inline-images)))
  (add-hook 'org-present-mode-quit-hook
            (lambda ()
              (org-remove-inline-images)))

And finally, we want to hide the cursor when presenting.

  (add-hook 'org-present-mode-hook
            (lambda ()
              (org-present-hide-cursor)))
  (add-hook 'org-present-mode-quit-hook
            (lambda ()
              (org-present-show-cursor)))

Terminal

  {
    programs.emacs.init.usePackage = {
      ghostel = {
        enable = true;
        command = ["ghostel"];
        hook = ["(eshell-load . ghostel-eshell-visual-command-mode)"];
      };
    };
  }

Ledger

  {
    programs.emacs.init.usePackage = {
      ledger-mode.enable = true;
    };
  }

Theme

I like Catppuccin Frappe as my theme. Let's use it in as many places as we can.

Bat

  {
    programs.bat = {
      config.theme = "catppuccin-frappe";
      themes = {
        catppuccin-frappe = {
  	      src = pkgs.fetchFromGitHub {
  	        owner = "catppuccin";
  	        repo = "sublime-text"; # Bat uses sublime syntax for its themes
  	        rev = "3d8625d937d89869476e94bc100192aa220ce44a";
  	        sha256 = "3ABUsfJpb6RO6AiuuSL5gwDofJIwC5tlEMzBrlY9/s0=";
  	      };
  	      file = "Frappe.tmTheme";
        };
      };
    };
  }

Helix

  {
    programs.helix.settings.theme = "catppuccin_frappe";
  }

Tmux

  {
    programs.tmux.plugins = [
      {
        plugin = pkgs.tmuxPlugins.catppuccin;
        extraConfig = ''set -g @catppuccin_window_tabs_enabled on
  set -g @catppuccin_window_default_text "#W"
  set -g @catppuccin_window_current_text "#W"'';
      }
    ];
  }

Lazygit

  {
    xdg = {
      enable = false
;
      # configFile."lazygit/config.yml" = {
      #   enable = true;
      #   source = pkgs.fetchFromGitHub
      #     {
      #       owner = "catppuccin";
      #       repo = "lazygit";
      #       rev = "b2ecb6d41b6f54a82104879573c538e8bdaeb0bf"; # Replace with the latest commit hash
      #       sha256 = "9BBmWRcjNaJE9T0RKVEJaSnkrbMom0CLYE8PzAT6yFw=";
      #     } + /themes/frappe.yml;
      # };
    };
  }

Starship

  {
    programs.starship.settings = builtins.fromTOML (builtins.readFile
      (pkgs.fetchFromGitHub
        {
          owner = "catppuccin";
          repo = "starship";
          rev = "3e3e54410c3189053f4da7a7043261361a1ed1bc"; # Replace with the latest commit hash
          sha256 = "soEBVlq3ULeiZFAdQYMRFuswIIhI9bclIU8WXjxd7oY=";
        } + /palettes/frappe.toml));
  }

Wezterm

  config.color_scheme = 'Catppuccin Frappe'

Ghostty

  {
    programs.ghostty.settings.theme = "Catppuccin Frappe";
  }

Emacs

  {
    programs.emacs = {
      extraPackages = epkgs: with epkgs; [
        catppuccin-theme
      ];
      extraConfig = ''(defvar my-base-font-size ${if pkgs.stdenv.isDarwin then "130" else "100"})
    (require 'catppuccin-theme)
    (setopt catppuccin-flavor 'frappe)
    (load-theme 'catppuccin :no-confirm)

    ;; (set-face-attribute 'default nil :font "JetBrainsMono Nerd Font" :height 130)
    ;; (set-face-attribute 'fixed-pitch nil :font "JetBrainsMono Nerd Font" :height 130)
    (set-face-attribute 'default nil :font "Iosevka Term SS14" :height my-base-font-size)
    (set-face-attribute 'fixed-pitch nil :font "Iosevka Term SS14" :height my-base-font-size)
    (set-face-attribute 'variable-pitch nil :font "Iosevka Etoile" :height my-base-font-size)
  '';
    };
  }