diff --git i/flake.lock w/flake.lock
index 01c49ec..a09a7f1 100644
--- i/flake.lock
+++ w/flake.lock
@@ -11,18 +11,18 @@
       },
       "locked": {
         "lastModified": 1757954848,
-        "narHash": "sha256-T/T5Kz2fWZpYNeZlHQ8jomJd6X6nVFpvKqPPhSWFDgM=",
-        "owner": "laurents",
-        "repo": "alaveteli",
+        "narHash": "sha256-7OvEveYbZHk8KsQKN4KXkuZpMv81JRkPPQj5bJ2Ph18=",
+        "ref": "nix-devenv",
         "rev": "3eb0e355f2451bfa6149bb5e732034f8d4ffeaf2",
+        "revCount": 20314,
         "submodules": true,
-        "type": "github"
+        "type": "git",
+        "url": "https://github.com/laurents/alaveteli"
       },
       "original": {
-        "owner": "laurents",
         "ref": "nix-devenv",
-        "repo": "alaveteli",
-        "type": "github"
+        "type": "git",
+        "url": "https://github.com/laurents/alaveteli"
       }
     },
     "cachix": {
diff --git i/flake.nix w/flake.nix
index f845fe6..b3e936f 100644
--- i/flake.nix
+++ w/flake.nix
@@ -4,7 +4,7 @@
   inputs = {
     nixpkgs.url = "github:cachix/devenv-nixpkgs/rolling";
     alaveteli-flake = {
-      url = "github:laurents/alaveteli/nix-devenv";
+      url = "git+https://github.com/laurents/alaveteli?ref=nix-devenv";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };

    static std::set<std::string> allowedAttrs{"submodules"};
    auto newRef(ref);

    for (auto & attr : *flake.selfAttrs) {
        if (!allowedAttrs.contains(attr.first)) {
            throw Error("flake 'self' attribute '%s' is not supported", attr.first);
        }
        newRef.input.attrs.insert_or_assign(attr.first, attr.second);
    }
    if (newRef != ref) {
        return newRef;
    }