common: pastebinit optional on Darwin

roles/home/common.nix

@@ -4,7 +4,15 @@
   imports = [ ./zsh.nix ./git.nix ./helix.nix ];
 
   home = {
-    packages = with pkgs; [ rizin sshfs victor-mono home-manager ripgrep pastebinit ];
+    packages = with pkgs; [
+      rizin
+      sshfs
+      victor-mono
+      home-manager
+      ripgrep
+    ]
+    ++ lib.optional (!stdenv.isDarwin) [ pastebinit ];
+
     stateVersion = "22.11";
   };
 }

roles/home/zsh.nix

@@ -1,4 +1,41 @@
-{ config, pkgs, lib, ... }: {
+{ config, pkgs, lib, optionalString, ... }:
+
+let
+  inherit (pkgs.lib) optionalString;
+
+  # not having the attribute users means
+  # we cannot change the default shell (e.g. this is not a NixOS host)
+  exec_zsh = ''
+    if [ -f "$HOME/.bashrc" ]; then
+      . "$HOME/.bashrc"
+    fi
+
+    exec ${pkgs.zsh}/bin/zsh
+  '';
+
+  nix_run_fn = ''
+    function _nr {
+      if [ "$#" -lt 1 ]; then
+        echo "Usage: _nr <pkg>"
+        return
+      fi
+
+      quoted_args=()
+      local pkg=$1
+      shift 1
+      
+      for a in "$@"; do
+        quoted_args+=("\"$a\"")
+      done
+
+      echo ''${quoted_args[@]}
+
+#      `nix run nixpkgs#$pkg -- ''${quoted_args[@]}`
+      exec nix run nixpkgs#$pkg "$@"
+    }
+  '';
+in
+{
   programs.zsh = {
     enable = true;
 
@@ -9,14 +46,12 @@
     };
   };
 
-  home.file.".bash_profile".text =
+  home.file.".bashrc".text = ''
-    # not having the attribute users means
+    ${nix_run_fn}
-    # we cannot change the default shell (e.g. this is not a NixOS host)
+        
-    if ! builtins.hasAttr "users" config then ''
+    ${optionalString (!builtins.hasAttr "users" config) "${exec_zsh}"}
-      if [ -f "$HOME/.bashrc" ]; then
+  '';
-        . "$HOME/.bashrc"
-      fi
 
-      exec ${pkgs.zsh}/bin/zsh
+  home.file.".zshrc".text = nix_run_fn;
-    '' else null;
 }
+