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home-manager/modules/programs/carapace.nix

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2023-09-03 12:09:45 +02:00
{ config, pkgs, lib, ... }:
let
inherit (lib)
mkEnableOption mkPackageOption mkIf pipe fileContents splitString;
cfg = config.programs.carapace;
bin = cfg.package + "/bin/carapace";
in {
meta.maintainers = with lib.maintainers; [ weathercold bobvanderlinden ];
options.programs.carapace = {
enable =
mkEnableOption "carapace, a multi-shell multi-command argument completer";
package = mkPackageOption pkgs "carapace" { };
enableBashIntegration = mkEnableOption "Bash integration" // {
default = true;
};
enableZshIntegration = mkEnableOption "Zsh integration" // {
default = true;
};
enableFishIntegration = mkEnableOption "Fish integration" // {
default = true;
};
enableNushellIntegration = mkEnableOption "Nushell integration" // {
default = true;
};
};
config = mkIf cfg.enable {
home.packages = [ cfg.package ];
programs = {
bash.initExtra = mkIf cfg.enableBashIntegration ''
source <(${bin} _carapace bash)
'';
zsh.initExtra = mkIf cfg.enableZshIntegration ''
source <(${bin} _carapace zsh)
'';
fish.interactiveShellInit = mkIf cfg.enableFishIntegration ''
${bin} _carapace fish | source
'';
nushell = mkIf cfg.enableNushellIntegration {
extraEnv = ''
let carapace_cache = "${config.xdg.cacheHome}/carapace"
if not ($carapace_cache | path exists) {
mkdir $carapace_cache
}
${bin} _carapace nushell | save -f $"($carapace_cache)/init.nu"
'';
extraConfig = ''
source ${config.xdg.cacheHome}/carapace/init.nu
'';
};
};
xdg.configFile =
mkIf (config.programs.fish.enable && cfg.enableFishIntegration) (
# Convert the entries from `carapace --list` to empty
# xdg.configFile."fish/completions/NAME.fish" entries.
#
# This is to disable fish builtin completion for each of the
# carapace-supported completions It is in line with the instructions from
# carapace-bin:
#
# carapace --list | awk '{print $1}' | xargs -I{} touch ~/.config/fish/completions/{}.fish
#
# See https://github.com/rsteube/carapace-bin#getting-started
let
carapaceListFile = pkgs.runCommandLocal "carapace-list" {
buildInputs = [ cfg.package ];
} ''
${bin} --list > $out
'';
in pipe carapaceListFile [
fileContents
(splitString "\n")
(map (builtins.match "^([a-z0-9-]+) .*"))
(builtins.filter
(match: match != null && (builtins.length match) > 0))
(map (match: builtins.head match))
(map (name: {
name = "fish/completions/${name}.fish";
value = { text = ""; };
}))
builtins.listToAttrs
]);
};
}