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inputs:

{ config, pkgs, lib, ... }:

{
  environment = {
    systemPackages = with pkgs; [unstable.git-branchless gitoxide watchman];
    shellAliases.git = "git-branchless wrap --";
  };

  programs.zsh.interactiveShellInit = ''
    source ${../../dotfiles/git-branchless.zsh}
  '';

  home-manager.users.minijackson = { ... }: {
    programs.git = {
      enable = true;
      package = pkgs.gitAndTools.gitFull;
      userEmail = "minijackson@riseup.net";
      userName = "Minijackson";

      signing = {
        signByDefault = true;
        key = "minijackson@riseup.net";
      };

      extraConfig =
        let
          deltaCommand = "${pkgs.gitAndTools.delta}/bin/delta";
        in
        {
          init.defaultBranch = "master";

          core = {
            whitespace = "trailing-space,space-before-tab";
            pager = deltaCommand;
            interactive.diffFilter = "${deltaCommand} --color-only";
            untrackedCache = true;
            # Use same package as above
            # Also, the fact that gitFull depends on Perl
            # means that the shebang was fixed
            fsmonitor = "${pkgs.gitAndTools.gitFull}/share/git-core/templates/hooks/fsmonitor-watchman.sample";
          };

          diff = {
            colormoved = "default";
            colorMovedWS = "allow-indentation-change";
          };

          pull.ff = "only";

          merge = { tool = "nvimdiff"; };
          "mergetool \"nvimdiff\"" = { cmd = "nvim -d \"$LOCAL\" \"$MERGED\" \"$REMOTE\""; };

          delta = with config.theme.colors; {
            line-numbers = true;
            navigate = true;

            whitespace-error-style = "reverse green";

            minus-style = "normal red";
            minus-non-emph-style = "normal red";
            minus-emph-style = "normal brightred";
            minus-empty-line-marker-style = "normal red";

            plus-style = "reverse green";
            plus-non-emph-style = "reverse green";
            plus-emph-style = "reverse brightgreen";
            plus-empty-line-marker-style = "reverse green";

            line-numbers-minus-style = "brightred";
            line-numbers-zero-style = "brightblack";
            line-numbers-plus-style = "brightgreen";

            file-style = "bright${dominantName}";
            line-numbers-left-style = dominantName;
            line-numbers-right-style = dominantName;
          };

        };
    };
  };

  # TODO: move common to NixOS' programs.git.config
  home-manager.users.root = { ... }: {
    programs.git = with lib;
      # TODO: use `home-manager.sharedModules`?
      mkMerge [
        (mkDefault config.home-manager.users.minijackson.programs.git)
        {
          signing = {
            signByDefault = false;
            key = null;
          };
        }
      ];
  };
}