diff --git a/flake.nix b/flake.nix
index 592d559..13fe091 100644
--- a/flake.nix
+++ b/flake.nix
@@ -52,6 +52,10 @@
     nixos-nspawn.url = "github:tfc/nspawn-nixos";
     nixos-nspawn.flake = false; # we don't use it /shrug
 
+    # https://github.com/nix-community/nix-unit
+    /* nix-unit.url = "github:nix-community/nix-unit"; */
+    /* nix-unit.inputs.nixpkgs.follows = "nixpkgs-edge"; */
+
     # https://github.com/wamserma/flake-programs-sqlite
     #flake-programs-sqlite-2311.url = "github:wamserma/flake-programs-sqlite";
     #flake-programs-sqlite-2311.inputs.nixpkgs.follows = "nixpkgs-2311";
@@ -441,5 +445,30 @@
       remoteenv-fhs     = mkShell { inheritFrom = [ remoteenv ]; }     [ system-manager ];
     });
 
+    /*
+    checks = forAllSystems ({ pkgs, inputs, system }: {
+      unitTests = pkgs.runCommand "tests" {
+          nativeBuildInputs = [ inputs.nix-unit.packages.${system}.default ];
+        } ''
+        export HOME="$(realpath .)"
+        # The nix derivation must be able to find all used inputs in the nix-store because it cannot download it during buildTime.
+        nix-unit --eval-store "$HOME" \
+          --extra-experimental-features flakes \
+          --override-input nixpkgs ${inputs.nixpkgs} \
+          --flake ${self}#unitTests
+        touch $out
+      '';
+    });
+
+    unitTests = let
+      doesEval = x: {
+        expr = (builtins.tryEval x).success;
+        expected = true;
+      };
+    in {
+      # https://nix-community.github.io/nix-unit/
+    };
+    */
+
   };
 }
diff --git a/justfile b/justfile
index fbebd2b..86636e3 100644
--- a/justfile
+++ b/justfile
@@ -10,10 +10,19 @@ export FZF_DEFAULT_OPTS := "--height 15 --cycle --bind 'ctrl-a:toggle-all' " + e
 @_default:
   just "$(gum filter --placeholder "Pick a recipie..." $(just --summary --unsorted))"
 
-eval hostname=`just _a_host`:
-  nix eval ".#nixosConfigurations.\"{{hostname}}\".config.system.build.toplevel.outPath" --show-trace
-eval-vm hostname=`just _a_host`:
-  nix eval ".#nixosConfigurations.\"{{hostname}}\".config.system.build.vm.outPath" --show-trace
+# @eval $hostname=`just _a_host` $attrpath="" *_="_sentinel_":
+@eval $hostname=`just _a_host` $attrpath="" *_:
+  attrpath="${attrpath:-system.build.toplevel.outPath}"; \
+  args=("${@:3}"); \
+  # [[ "${args[0]}" != "_sentinel_" ]] || args=("${args[@]:1}"); \
+  set -x; nix eval ".#nixosConfigurations.\"$hostname\".config.$attrpath" --show-trace "${args[@]}"
+# @eval-vm $hostname=`just _a_host` $attrpath="" *_="_sentinel_":
+@eval-vm $hostname=`just _a_host` $attrpath="" *_:
+  # nix eval ".#nixosConfigurations.\"$hostname\".config.system.build.vm.outPath" --show-trace "${@:2}"
+  attrpath="${attrpath:-system.build.toplevel.outPath}"; \
+  args=("${@:3}"); \
+  # [[ "${args[0]}" != "_sentinel_" ]] || args=("${args[@]:1}"); \
+  set -x; nix eval ".#nixosConfigurations.\"$hostname\".config.virtualisation.vmVariant.$attrpath" --show-trace "${args[@]}"
 
 repl $hostname=`just _a_host`:
   NIX_NO_NOM=1 nixos-rebuild --flake .#"$hostname" repl
diff --git a/todos.md b/todos.md
index 2df2f07..46a4380 100644
--- a/todos.md
+++ b/todos.md
@@ -5,6 +5,15 @@
 * [ ] nixos mobile
 * [ ] home-manager on fhs distro
 * [ ] system-manager with nix-system-graphics and systemd stuff
+# non-nix
+* [ ] a better joinLines micro plugin
+* [ ] a joinLines zed plugin
+* [ ] a copy-as-rich-text for micro using pandoc
+* [ ] a copy-as-rich-text for zed using pandoc?
+* [ ] a align-lines plugin for micro
+* [ ] a align-lines plugin for zed
+* [ ] toggle-markdown-checkbox plugin for micro
+* [ ] toggle-markdown-checkbox plugin for zed
 # nice to have
 * [ ] move mkNixos mkHome mkSystem mkBsd etc out of flake.nix
 * [ ] make `just build` detect which of nixos-rebuild/home-manage/system-manager to use
diff --git a/users/pbsds/home/profiles/bashrc.d/nix-fd.sh b/users/pbsds/home/profiles/bashrc.d/nix-fd.sh
index c4c3d1a..f842751 100644
--- a/users/pbsds/home/profiles/bashrc.d/nix-fd.sh
+++ b/users/pbsds/home/profiles/bashrc.d/nix-fd.sh
@@ -55,7 +55,9 @@ _nix_fd() (
   readarray -d $'\n' -t storepaths < <(
     "$nix" build "${nix_args[@]}" "${nix_flags[@]}" --print-out-paths --no-link
   )
-  fd "${fd_pattern[@]}" "${storepaths[@]}" "${fd_flags[@]}"
+  if [[ "${#storepaths[@]}" -gt 0 ]]; then
+    fd "${fd_pattern[@]}" "${storepaths[@]}" "${fd_flags[@]}"
+  fi
 )
 
 nix-fd() { _nix_fd "nix" "$@"; }
diff --git a/users/pbsds/home/profiles/shell.nix b/users/pbsds/home/profiles/shell.nix
index 29a5146..b3461be 100644
--- a/users/pbsds/home/profiles/shell.nix
+++ b/users/pbsds/home/profiles/shell.nix
@@ -72,9 +72,19 @@ in
     changeDirWidgetOptions = [ "--preview 'tree -C {} | head -200'" ];
 
     # ctrl-t
-    fileWidgetCommand = "fd --type f"; # respects .gitignore
+    # fileWidgetCommand = "fd . --type file"; # respects .gitignore
+    fileWidgetCommand = "fd . | sort --ignore-case --general-numeric-sort"; # respects .gitignore
     fileWidgetOptions = [
+      "--bind 'home:first'"
+      "--bind 'end:last'"
+      "--cycle"
+
       #"--preview 'head {}'"
+      # "--preview 'bat {}'"
+      # "--preview 'tail -n$LINES {} | bat --file-name {} --paging never --style plain'"
+      # "--preview 'bat {} --paging never --style plain' --preview-window follow"
+      "--preview 'if [[ -f {} ]]; then tail -n$LINES {} | bat --paging=never --style=plain --color=always --file-name {} ; else file {} ; fi' --preview-window follow"
+
       # https://github.com/junegunn/fzf/discussions/3363#discussioncomment-6419463
       "--bind 'ctrl-a:reload:eval $FZF_DEFAULT_COMMAND --no-ignore'"
     ];
@@ -95,9 +105,9 @@ in
   #programs.zoxide.enable = true;
   #programs.zoxide.options = [ "--cmd cd --cmd dc" ];
 
-  # https://carapace-sh.github.io/carapace-bin/completers.html
-  programs.carapace.enable = true; # completions
-  programs.bash.sessionVariables.CARAPACE_EXCLUDES = "just"; # comma-separated
+  # # https://carapace-sh.github.io/carapace-bin/completers.html
+  # programs.carapace.enable = true; # completions
+  # programs.bash.sessionVariables.CARAPACE_EXCLUDES = "just"; # comma-separated
 
   # i can't type
   home.shellAliases.sl = "ls";