chore: Try improving devenv nix

Author: johnchildren

devenv.lock

@@ -3,10 +3,10 @@
     "devenv": {
       "locked": {
         "dir": "src/modules",
-        "lastModified": 1742147141,
+        "lastModified": 1744588088,
         "owner": "cachix",
         "repo": "devenv",
-        "rev": "e1eb23d427a3a0871c277268a28163898fd37266",
+        "rev": "1e6c06a058dae3791c0303eb99636cee9605c8d9",
         "type": "github"
       },
       "original": {
@@ -40,10 +40,10 @@
         ]
       },
       "locked": {
-        "lastModified": 1742058297,
+        "lastModified": 1742649964,
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "59f17850021620cd348ad2e9c0c64f4e6325ce2a",
+        "rev": "dcf5072734cb576d2b0c59b2ac44f5050b5eac82",
         "type": "github"
       },
       "original": {
@@ -74,10 +74,10 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1744157173,
+        "lastModified": 1744536153,
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "6a39c6e495eefabc935d8ddf66aa45d85b85fa3f",
+        "rev": "18dd725c29603f582cf1900e0d25f9f1063dbf11",
         "type": "github"
       },
       "original": {

devenv.nix

@@ -3,7 +3,7 @@ let
   qulacs = pkgs.callPackage ./nix/qulacs.nix {};
 in {
   env = {
-    QULACS_PATH = "${qulacs}";
+    QULACS_PATH = qulacs;
     LIBCLANG_PATH = "${pkgs.libclang.lib}/lib";
   };