Use fish only as login shell and keep bash as system shell

2025-12-15 14:59:45 +01:00
parent a938cf7abe
commit 8c048ac3c2
2 changed files with 20 additions and 8 deletions
@@ -1,5 +1,13 @@
 { pkgs, ... }:
 {
+  programs.bash = {
+    interactiveShellInit = ''
+      if [[ $(${pkgs.procps}/bin/ps --no-header --pid=$PPID --format=comm) != "fish" && -z ''${BASH_EXECUTION_STRING} ]]
+      then
+        shopt -q login_shell && LOGIN_OPTION='--login' || LOGIN_OPTION=""
+        exec ${pkgs.fish}/bin/fish $LOGIN_OPTION
+      fi
+    '';
+  };
  programs.fish.enable = true;
-  users.defaultUserShell = pkgs.fish;
 }