diff --git a/flake.lock b/flake.lock
index fa95ed5d6b..48dcd47c7d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -10,11 +10,11 @@
         "rust-overlay": "rust-overlay"
       },
       "locked": {
-        "lastModified": 1678152261,
-        "narHash": "sha256-cPRDxwygVMleiSEGELrvAiq9vYAN4c3KK/K4UEO13vU=",
+        "lastModified": 1680063688,
+        "narHash": "sha256-hVt0i96VjwxKb/PvPfxM2otfvz923b8JHQ/l5XWeDIM=",
         "owner": "ipetkov",
         "repo": "crane",
-        "rev": "5291dd0aa7a52d607fc952763ef60714e4c881d4",
+        "rev": "6736e8be8e451b49954213241360e3b72529e47f",
         "type": "github"
       },
       "original": {
@@ -101,11 +101,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1678298120,
-        "narHash": "sha256-iaV5xqgn29xy765Js3EoZePQyZIlLZA3pTYtTnKkejg=",
+        "lastModified": 1680030621,
+        "narHash": "sha256-qQa1NeS5Rvk2lgK5lSk986PC6I72yIHejzM8PFu+dHs=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "1e383aada51b416c6c27d4884d2e258df201bc11",
+        "rev": "402cc3633cc60dfc50378197305c984518b30773",
         "type": "github"
       },
       "original": {
diff --git a/nix/unblob/default.nix b/nix/unblob/default.nix
index 3dfda36951..e71e662cf5 100644
--- a/nix/unblob/default.nix
+++ b/nix/unblob/default.nix
@@ -112,7 +112,7 @@ let
     ];
 
     preBuild = ''
-      cp -r --no-preserve=mode ${rust-module} build
+      cp -r --no-preserve=mode ${rust-module}/unblob .
     '';
 
     makeWrapperArgs = [
diff --git a/nix/unblob/rust-module.nix b/nix/unblob/rust-module.nix
index 217929f75c..774ad7eebb 100644
--- a/nix/unblob/rust-module.nix
+++ b/nix/unblob/rust-module.nix
@@ -52,6 +52,6 @@ craneLib.mkCargoDerivation {
   '';
   installPhaseCommand = ''
     mkdir -p $out
-    cp -a build/* $out
+    cp -a build/lib.*/* $out
   '';
 }
diff --git a/shell.nix b/shell.nix
index bd7eaa5dec..02616768c2 100644
--- a/shell.nix
+++ b/shell.nix
@@ -13,6 +13,10 @@ mkShell {
   packages = [
     unblob
     unblob.runtimeDeps
+    ruff
+    pyright
+    python3Packages.pytest
+    python3Packages.pytest-cov
     poetry
     lzo
     update