nurl gives different hash than Nixpkgs

[Aleksanaa]

nix run pkgs#nurl https://github.com/nix-community/nixd/archive/refs/tags/2.2.3.zip

(nurl 0.3.13) Gives me

$ nix flake prefetch --extra-experimental-features 'nix-command flakes' --json github:nix-community/nixd/38560011298ab5f955036ef0ff453d387a746044
fetchFromGitHub {
  owner = "nix-community";
  repo = "nixd";
  rev = "38560011298ab5f955036ef0ff453d387a746044";
  hash = "sha256-xi6iFd1DFR0g8TyJCOg5pkLHmXP0oyB4rMx5GvqwyKU=";
}

At the same time, by removing the hash (hash = "") from nixd and refetching, it gives me

error: hash mismatch in fixed-output derivation '/nix/store/nab810qn7l15xvsq1mhpr6d4gzw2zfx4-source.drv':
         specified: sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
            got:    sha256-1i4U012vqw84NuD5cjgfVX/he4vW9MyEeIetJ55g280=

I'm on Nixpkgs 74d38fdb308da734ea497aae3b98640b4d8265ca. I alternated between these two operations repeatedly and got the same results.

[figsoda]

old reply

Sorry for the super late reply. I can't reproduce the FOD hash from your error message

$ git rev-parse HEAD
a3a2ddee4adfb361bdfe2e915c7e85c2e71cfc5f

$ nix build --impure --expr '(import ./. { }).fetchFromGitHub { owner = "nix-community"; repo = "nixd"; rev = "38560011298ab5f955036ef0ff453d387a746044"; hash = ""; }'
error: hash mismatch in fixed-output derivation '/nix/store/0w0jy4m1jcmny65xyzjczqv77rwsln0h-source.drv':
         specified: sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=
            got:    sha256-xi6iFd1DFR0g8TyJCOg5pkLHmXP0oyB4rMx5GvqwyKU=

Do you happen to be running macos? The case-sensitivity of the filesystem you're using can sometimes impact the hash when e.g. you have both foo and FOO in the repository.

Nurl doesn't support revisions from the URL yet, see #5. You should run

nix run nixpkgs#nurl https://github.com/nix-community/nixd 2.2.3

instead. Otherwise it just finds takes the revision of the HEAD, which was 38560011298ab5f955036ef0ff453d387a746044.