fish: Install fish shell Although I disagree some of its designs (no way to filter-out commands that is based on invalid claim "you should fix $PATH", already specified flags still appears on completion,) trying and getting familiar with new things would be benefitical to me in a long term. Also, those design flaw might be ignorable once I adapted to the "fish way" of operating on its interactive shell.

Changes

2 changed files (+42/-0)

• features/basics/default.nix
  • @@ -62,6 +62,11 @@ bash = {
    enable = true; }; + fish = { + enable = true; + interactiveShellInit = builtins.readFile ./init.fish; + }; + # A modern replacement for ls (fork of exa). # https://eza.rocks/ eza = {
• features/basics/init.fish (new)
  • @@ -0,0 +1,37 @@
    + # Copyright 2025 Shota FUJI <pockawoooh@gmail.com> + # + # Permission to use, copy, modify, and/or distribute this software for any + # purpose with or without fee is hereby granted. + # + # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH + # REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + # AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, + # INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM + # LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR + # OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + # PERFORMANCE OF THIS SOFTWARE. + # + # SPDX-License-Identifier: 0BSD + + fish_vi_key_bindings + + set -U fish_greeting + + if command -q nix-your-shell + nix-your-shell fish | source + end + + function fish_right_prompt + set -l environment + + if test -n "$SSH_CLIENT" -o -n "$SSH_TTY" + set -a environment "SSH" + end + + if test -n "$IN_NIX_SHELL" + set -a environment "Nix" + end + + echo -n (set_color blue)(string join ", " $environment) + set_color normal + end