nichts/packages/fish/default.nix

# This shell setup was originally inspired by sioodmy.
# Some further cool tricks, like using vendor_conf.d to avoid having
# to build fish myself, are taken from viperml's setup.
{ pkgs, ... }:
let
  inherit (pkgs) lib;
  inherit (lib.strings) concatStringsSep;
  inherit (lib.attrsets) mapAttrsToList;

  toml = pkgs.formats.toml { };
  starship-config = import ./starship.nix;
  aliases = import ./aliases.nix { inherit pkgs; };
  vendorConf = "share/fish/vendor_conf.d";

  fishinit = import ./fishinit.nix {
    inherit
      pkgs
      aliasesStr
      vendorConf
      ;
  };

  aliasesStr = mapAttrsToList (k: v: "alias ${k}=\"${v}\"") aliases |> concatStringsSep "\n";

  packages = import ./packages.nix pkgs;
in
(pkgs.symlinkJoin {
  name = "fish";
  paths = [ pkgs.fish ] ++ packages;
  nativeBuildInputs = [ pkgs.makeWrapper ];
  postBuild = ''
    wrapProgram $out/bin/fish \
    --set STARSHIP_CONFIG "${toml.generate "starship.toml" starship-config}" \
    --prefix XDG_DATA_DIRS : "${
      lib.makeSearchPathOutput "out" "share" [
        fishinit
      ]
    }"
  '';
}).overrideAttrs
  (_: {
    passthru = {
      shellPath = "/bin/fish";
    };
  })