diff --git a/configuration-nixbsd.nix b/configuration-nixbsd.nix
index 005c4f6..ac12b80 100644
--- a/configuration-nixbsd.nix
+++ b/configuration-nixbsd.nix
@@ -13,4 +13,8 @@ in {
     dependencies = [ "FILESYSTEMS" ];
     before = [ "nix-daemon" ];
   };
+
+  environment.systemPackages = with pkgs; [
+    freebsd.truss
+  ];
 }
diff --git a/configuration-nixos.nix b/configuration-nixos.nix
index ec2b5b9..ad62418 100644
--- a/configuration-nixos.nix
+++ b/configuration-nixos.nix
@@ -27,6 +27,8 @@ in {
   };
 
   environment.systemPackages = with pkgs; [
+    strace
+
     # language servers
     nil
     rust-analyzer
diff --git a/configuration.nix b/configuration.nix
index ec7bd32..e0a4ee7 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -34,6 +34,7 @@
     btop
     file
     patchelf
+    gdb
 
     (python3.withPackages (p: with p; [
       virtualenvwrapper