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dotfiles/modules/fish/fish.nix

131 lines
4.0 KiB
Nix

{
config,
lib,
pkgs,
...
}:
# fish for the primary user, configured through home-manager.
let
cfg = config.modules.fish;
user = config.user.name;
in
{
options.modules.fish = {
enable = lib.mkEnableOption "fish as the user's shell, configured via home-manager";
defaultShell = lib.mkOption {
type = lib.types.bool;
default = false;
description = "Set fish as the user's default login shell.";
};
};
config = lib.mkIf cfg.enable {
# System-level fish registers it in /etc/shells and installs vendor completions.
programs.fish.enable = true;
users.users.${user}.shell = lib.mkIf cfg.defaultShell pkgs.fish;
home-manager.users.${user} = {
home.packages = with pkgs; [
eza # backs the ls/la/ll aliases
bat # backs the manpager
fastfetch # the shell greeting
wget # backs the wget abbreviation
];
programs.fish = {
enable = true;
preferAbbrs = true;
plugins = [
# Notify when a long command finishes.
{
name = "done";
src = pkgs.fishPlugins.done.src;
}
# Restore the !! and !$ history bindings.
{
name = "bang-bang";
src = pkgs.fishPlugins.bang-bang.src;
}
];
shellAliases = {
ls = "eza -alg --color=always --group-directories-first --icons=always";
la = "eza -a --color=always --group-directories-first --icons=always";
ll = "eza -lg --color=always --group-directories-first --icons=always";
lt = "eza -aT -I '.git' --color=always --group-directories-first --icons=always";
"l." = "eza -a | grep -e '^\\.'";
};
shellAbbrs = {
# Walk up the tree.
".." = "cd ..";
"..." = "cd ../..";
"...." = "cd ../../..";
vi = "nvim";
vim = "nvim";
cp = "cp -v";
tmx = "tmux new-session -A -s";
tarnow = "tar -acf ";
untar = "tar -zxvf ";
wget = "wget -c ";
grep = "grep --color=auto";
fgrep = "fgrep --color=auto";
egrep = "egrep --color=auto";
jctl = "journalctl -p 3 -xb";
# Rebuild the system, and reclaim disk from old generations.
update = "sudo nixos-rebuild switch --flake .#${config.networking.hostName}";
cleanup = "sudo nix-collect-garbage -d";
};
functions = {
# Pick the logo that fits the terminal so the greeting never wraps.
# The full logo needs about 118 columns beside the info block, the
# compact one about 89, the info block alone about 71.
fish_greeting = ''
if test "$COLUMNS" -ge 118
fastfetch
else if test "$COLUMNS" -ge 89
fastfetch --logo NixOS_small
else
fastfetch --logo none
end
'';
# vi insert mode omits the emacs ctrl-f and ctrl-r bindings, so restore both.
# ctrl-f accepts an autosuggestion and ctrl-r opens the history pager.
# vi normal mode keeps its ctrl-r redo, since only insert mode is bound.
fish_user_key_bindings = ''
bind -M insert ctrl-f forward-char
bind -M insert ctrl-r history-pager
'';
history = {
description = "Show command history with timestamps";
body = "builtin history --show-time='%F %T '";
};
backup = {
description = "Copy <file> to <file>.bak";
argumentNames = "filename";
body = "cp $filename $filename.bak";
};
copy = {
description = "Copy a file, or recursively copy a source directory into a destination";
body = builtins.readFile ./functions/copy.fish;
};
};
# Rendered by home-manager into ~/.config/fish/config.fish.
interactiveShellInit = builtins.readFile ./config.fish;
};
};
};
}