Nixified dotfiles

Initial setup

1. Download nix installer & run it with multi-user mode enabled: curl -L https://nixos.org/nix/install | sh -s -- --daemon

2. Enable flakes: mkdir -p ~/.config/nix/ && echo 'experimental-features = nix-command flakes' > ~/.config/nix/nix.conf

3. On Linux, configure nix by adding to /etc/nix/nix.conf. No need to do it on Darwin since we already do it nix-darwin (see configuration.nix)

      keep-outputs = true
      keep-derivations = true
      auto-optimise-store = true
   
      # assuming the builder has a faster internet connection
      builders-use-substitutes = true
   
      experimental-features = nix-command flakes
   

4. Build ./x home build and activate ./x home switch

5. Activate shell by adding /home/appaquet/.nix-profile/bin/fish to /etc/shells and running chsh -s /home/appaquet/.nix-profile/bin/fish

6. On MacOS, apply darwin config: ./x darwin build and ./x darwin witch 2. Select a patched nerdfonts font in iTerm2 in order to have icons in neovim.

Not covered

• Rust is not installed using Nix anymore as it breaks cross since Rust binaries link with Nix libs. Cross does mount /nix, but it doesn't seem sufficient...

  See this commit.

  Install rustup manually instead, see https://rustup.rs/

• In order to enable mold, edit ~/.cargo/config and add:

  [target.x86_64-unknown-linux-gnu]
  linker = "clang"
  rustflags = ["-C", "link-arg=-fuse-ld=/home/appaquet/.nix-profile/bin/mold"]

Troubleshooting

1. It seems that when switching to newer fish, the paths weren't properly set. On top of that, it may be shadowed by a global fish path too. Reset fish paths with:

   set -ge fish_user_paths
   set -Ua fish_user_paths /nix/var/nix/profiles/default/bin
   set -Ua fish_user_paths /home/appaquet/.nix-profile/bin

Cheat sheets

Fish

• Foreign env is used to source ~/.profile. Any local variables can be set there.

• Paths: fish uses fish_user_paths to define paths and can be persisted when using "universal variables" (set with -U).

  • To add a path: fish_add_path /some/new/path or set -Ua fish_user_paths /some/new/path
  • To list current paths: echo $fish_user_paths | tr " " "\n" | nl
  • To remove a path: set --erase fish_user_paths[NUMBER AS LISTED STARTING AT 1]

• Shortcuts

  • See https://fishshell.com/docs/current/interactive.html#shared-bindings for all shortcuts
  • With no input <alt><left> or <alt><right> to jump to previous directory in history
  • With input <alt><left> or <alt><right> to between words
  • With input <ctl>w to delete previous word
  • With input <alt>e or <alt>v to open input in editor (doesn't work on MacOS)
  • <ctl><alt>n: fzf nix packages
  • <ctl><alt>g: fzf ripgrep
  • <ctl><alt>f: fzf fd (find file)
  • <ctl><alt>p: fzf processes
  • <ctl><alt>l: fzf git log
  • <ctl><alt>s: fzf git status

Neovim

Mapping

• General

  • <leader> is configured to \ (backslash)
  • <leader> 1 through 9 to switch between opened buffers
  • <leader>] to switch to next buffer
  • <leader>[ to switch to previous buffer
  • <leader>w to save current buffer
  • <leader>x to save and then execute current buffer (as long as it's chmod +x)
  • <leader>z to execute current visual selection in a shell
  • <leader>r to save current buffer and then execute rsync.sh in working dir
  • <leader>q to close the current buffer (equivalent to :q)
  • <leader>w to close the current buffer by trying not to messup the layout
  • <leader><tab> to switch between tab and spaces
  • <ctrl>e or <leader>e to toggle Nerdtree (files)
  • <ctrl>p fuzzy finding file
  • <ctrl>f riggrep search
  • <leader>m to toggle mouse support (useful to allow select + copy)
  • <leader>y to yank to clipboard using bin/pbcopy util
  • <leader>p to paste from clipboard using bin/pbpaste util

• LSP

  • gD goto declaration
  • gd goto definition
  • gi goto implementation
  • K hover info
  • <space>rn rename symbol

• Commands

  • E <file>: open a new buffer for a new file in current buffer's directory
  • Delete: delete current buffer's file

• Basics

  • <ctrl>o navigate back and <ctrl>i to navigate forward

tmux

• Shortcuts

  • See https://github.com/gpakosz/.tmux for all shortcuts
  • <ctrl>b e to toggle synchronized panes
  • <ctrl>b m to toggle mouse support (useful to allow select + copy)
  • <ctrl>b <ctrl>l to navigate to next window
  • <ctrl>b <ctrl>h to navigate to prev window
  • <ctrl>b Tab to navigate to last window
  • <ctrl>b <tab> to navigate to last window
  • <ctrl>b <alt><arrows> to resize pane
  • <ctrl>b r to reload config
  • <ctrl>b <enter> to get into copy mode
    • v for selection
    • ctrl-v to switch between between block and line selection
    • y to yank
    • H and L start line / end line
  • <ctrl>b q to show pane ids, then :swap-pane -s X -t Y to swap

• Plugins (via integrated .tmux.conf's tpm)

  • tmux-resurrect
    • <ctrl>b <ctrl>s to save current layout
    • <ctrl>b <ctrl>r to ressurect last saved layout

Resources

• https://github.com/NixOS/nixpkgs/blob/master/pkgs/build-support/trivial-builders.nix
• https://nix-community.github.io/home-manager/options.html
• https://daiderd.com/nix-darwin/manual/index.html#sec-options

TODO

• Manage brew through nix: https://daiderd.com/nix-darwin/manual/index.html#opt-homebrew.enable
• Find out how to declaratively install apt packages