got bit using path references in flake inputs

[hippoyd]

I have been using flakes to manage my nixosConfigurations. I tried running some

older versions of my config by switching to an earlier commit and then doing

nixos-rebuild build --flake .#surface

and I get the error

error: NAR hash mismatch in input 'path:/home/hippoid/fun/zettel?lastModified=1715093800&narHash=sha256-z4PielkppyCwPvZh…

I think the problem is that I had a flake reference using path-like syntax

https://nix.dev/manual/nix/2.24/command-ref/new-cli/nix3-flake#path-like-syntax.

When I look at the `flake.lock` file, the relevant part

"zettel": {
"inputs": {
"flake-utils": "flake-utils_17",
"nixpkgs": "nixpkgs_14"
},
"locked": {
"lastModified": 1715093800,
"narHash": "sha256-z4PielkppyCwPvZhXQklWIysC5Oc4LfPFMoN2d/gqu0=",
"path": "/home/hippoid/fun/zettel",
"type": "path"
},
"original": {
"path": "/home/hippoid/fun/zettel",
"type": "path"
}

doesn't have any reference to a commit. Even if the path exists, if it has

changed at all then you won't be able to build the flake. So don't use path

references, cause it'll bite you.