116 lines
3.7 KiB
Nix
116 lines
3.7 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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# fish for the primary user, configured through home-manager.
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let
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cfg = config.modules.shell.fish;
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user = config.user.name;
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shortcuts = config.registry.shell-shortcut.${config.networking.hostName};
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envVars = config.registry.env-var.${config.networking.hostName};
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commandsOf = shortcuts: lib.mapAttrs (_name: shortcut: shortcut.command) shortcuts;
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exportEnvVar = name: value: ''
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set -gx ${name} ${lib.escapeShellArg value}
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'';
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in
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{
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options.modules.shell.fish = {
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enable = lib.mkEnableOption "fish as the user's shell, configured via home-manager";
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defaultShell = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = "Set fish as the user's default login shell.";
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};
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};
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config = lib.mkIf cfg.enable {
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# System-level fish registers it in /etc/shells and installs vendor completions.
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programs.fish.enable = true;
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users.users.${user}.shell = lib.mkIf cfg.defaultShell pkgs.fish;
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home-manager.users.${user} = {
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home.packages = with pkgs; [
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bat # backs the manpager
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fastfetch # the shell greeting
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];
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xdg.configFile."fish/completions/bazel.fish".source = ./completions/bazel.fish;
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programs.fish = {
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enable = true;
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preferAbbrs = true;
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plugins = [
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# Notify when a long command finishes.
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{
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name = "done";
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src = pkgs.fishPlugins.done.src;
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}
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# Restore the !! and !$ history bindings.
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{
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name = "bang-bang";
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src = pkgs.fishPlugins.bang-bang.src;
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}
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];
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shellAliases = commandsOf (lib.filterAttrs (_name: shortcut: !shortcut.abbreviation) shortcuts);
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shellAbbrs = commandsOf (lib.filterAttrs (_name: shortcut: shortcut.abbreviation) shortcuts);
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functions = {
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# Pick the logo that fits the terminal so the greeting never wraps.
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# The full logo needs about 118 columns beside the info block, the
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# compact one about 89, the info block alone about 71.
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fish_greeting = ''
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if test "$COLUMNS" -ge 118
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fastfetch
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else if test "$COLUMNS" -ge 89
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fastfetch --logo NixOS_small
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else
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fastfetch --logo none
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end
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'';
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# vi insert mode omits the emacs ctrl-f and ctrl-r bindings, so restore both.
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# ctrl-f accepts an autosuggestion and ctrl-r opens the history pager.
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# vi normal mode keeps its ctrl-r redo, since only insert mode is bound.
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fish_user_key_bindings = ''
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bind -M insert ctrl-f forward-char
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bind -M insert ctrl-r history-pager
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'';
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history = {
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description = "Show command history with timestamps";
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body = "builtin history --show-time='%F %T '";
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};
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backup = {
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description = "Copy <file> to <file>.bak";
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argumentNames = "filename";
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body = "cp $filename $filename.bak";
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};
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copy = {
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description = "Copy a file, or recursively copy a source directory into a destination";
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body = builtins.readFile ./functions/copy.fish;
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};
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deploy-to = {
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description = "Deploy the current dotfiles branch to a host through target-local nixos-rebuild";
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body = builtins.readFile ./functions/deploy-to.fish;
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};
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};
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# Rendered by home-manager into ~/.config/fish/config.fish.
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interactiveShellInit = lib.concatStringsSep "\n" (
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(lib.mapAttrsToList exportEnvVar envVars)
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++ [ (builtins.readFile ./config.fish) ]
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);
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};
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};
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};
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}
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