diff --git a/tortoise/.direnv/flake-profile b/tortoise/.direnv/flake-profile
index f9f4da1..4e45b4a 120000
--- a/tortoise/.direnv/flake-profile
+++ b/tortoise/.direnv/flake-profile
@@ -1 +1 @@
-flake-profile-18-link
\ No newline at end of file
+flake-profile-22-link
\ No newline at end of file
diff --git a/tortoise/.direnv/flake-profile-18-link b/tortoise/.direnv/flake-profile-18-link
deleted file mode 120000
index 60c8dcd..0000000
--- a/tortoise/.direnv/flake-profile-18-link
+++ /dev/null
@@ -1 +0,0 @@
-/nix/store/d9kjbddwp2dsiwpvdvmaff9lpgy5rhsv-nix-shell-env
\ No newline at end of file
diff --git a/tortoise/.direnv/flake-profile-22-link b/tortoise/.direnv/flake-profile-22-link
new file mode 120000
index 0000000..876c99e
--- /dev/null
+++ b/tortoise/.direnv/flake-profile-22-link
@@ -0,0 +1 @@
+/nix/store/jc0724y8lrsl7cynqdphq7ivbiq8cz52-nix-shell-env
\ No newline at end of file
diff --git a/tortoise/flake.nix b/tortoise/flake.nix
index 623929f..b0c0ec0 100644
--- a/tortoise/flake.nix
+++ b/tortoise/flake.nix
@@ -15,10 +15,12 @@
         default = pkgs.mkShell.override
           {
             # Override stdenv in order to change compiler:
-            stdenv = pkgs.clangStdenv;
+            # stdenv = pkgs.clangStdenv;
           }
           {
             packages = with pkgs; [
+              glibc
+              nix-env
               clang-tools
               cmake
               codespell
diff --git a/tortoise/tortoise b/tortoise/tortoise
new file mode 100755
index 0000000..b85a96a
Binary files /dev/null and b/tortoise/tortoise differ