1 files changed, 19 insertions, 0 deletions

diff --git a/overlays/persistent-nix-shell/default.nix b/overlays/persistent-nix-shell/default.nix
new file mode 100644
index 00000000..60396335
--- /dev/null
+++ b/overlays/persistent-nix-shell/default.nix
@@ -0,0 +1,19 @@
+final: prev: {
+  persistent-nix-shell = prev.stdenv.mkDerivation {
+    name = "persistent-nix-shell";
+    src = ./persistent-nix-shell;
+
+    phases = [ "buildPhase" "installPhase" ];
+
+    inherit (final) zsh;
+
+    buildPhase = ''
+      substituteAll $src persistent-nix-shell
+    '';
+
+    installPhase = ''
+      install -m 0755 -D -t $out/bin \
+        persistent-nix-shell
+    '';
+  };
+}