Since commit 0b0119f1ea on 2022-Jun-04,
`git-lfs` no longer builds with `--option substituters ""`:
```
error: hash mismatch in fixed-output derivation '/nix/store/2g1jwczzld8l190s2apc0ihffmil385f-source.drv':
specified: sha256-3gVUPfZs5GViEA3D7Zm5NdxhuEz9DhwPLoQqHFdGCrI=
got: sha256-D7ZA04HZOG8DcejW+S91c5HjVIW+SLMzXZHylpARwrQ=
note: keeping build directory '/tmp/nix-build-source.drv-3'
error: 1 dependencies of derivation '/nix/store/jzl8ypirdrii6aik2pss84df7sds7vqr-git-lfs-3.2.0.drv' failed to build
``
It appears that the hash
`sha256-3gVUPfZs5GViEA3D7Zm5NdxhuEz9DhwPLoQqHFdGCrI=` was calculated
based on `fetchDotGit=false`, and was in cachix, so nobody noticed
that the hash doesn't match the fetcher expression.
This is yet another case of an ongoing problem with nixpkgs: we have
no way of noticing when a fetcher expression has the wrong hash if
that incorrect hash happens to be the hash of something that is in
cachix. Apparently nobody (else) is checking that nixpkgs works with
`--option substituters ""`.
261f090079