feat: add nix shell shortcut called p

modules/terminal-life/default.nix

@@ -36,6 +36,7 @@ in {
             ./nnn/0001-feat-use-wasd-keybindings-for-jkli.patch
           ];
       }))
+      p
       powerline
       screen
       silver-searcher

pkgs/default.nix

@@ -9,6 +9,7 @@ with prev; {
   mailto-mutt = writeShellScriptBin "mailto-mutt" (import ./mailto-mutt.nix final);
   mopidy-jellyfin = import ./mopidy-jellyfin.nix final;
   mu = writeShellScriptBin "mu" (import ./mu.nix final);
+  p = writeShellScriptBin "p" (import ./p.nix final);
   present-md = writeShellScriptBin "present-md" (import ./present-md.nix final);
   psos = writeShellScriptBin "psos" (import ./psos.nix final);
   psos-docs = import ./psos-docs.nix final;

pkgs/p.nix

@@ -0,0 +1,10 @@
+self:
+with self; ''
+  PKGS=""
+  for pkg in "$@"
+  do
+    PKGS="$PKGS nixpkgs#$pkg"
+  done
+
+  ${nix}/bin/nix shell $PKGS
+''