https://github.com/juspay/services-flake/blob/eed1ab55413afbb8fd7bc929076c73894e5104e0/nix/services/elasticsearch.nix#L20 https://github.com/NixOS/nixpkgs/blob/148bab9c1c3c53136ecb44a6ea356a0ed5b39b06/pkgs/servers/search/elasticsearch/7.x.nix#L97 it has been replaced by [`opensearch`](https://github.com/NixOS/nixpkgs/blob/master/pkgs/by-name/op/opensearch/package.nix) **at least** until NixOS/nixpkgs#245430 is fixed
services-flake/nix/services/elasticsearch.nix
Line 20 in eed1ab5
https://github.com/NixOS/nixpkgs/blob/148bab9c1c3c53136ecb44a6ea356a0ed5b39b06/pkgs/servers/search/elasticsearch/7.x.nix#L97
it has been replaced by
opensearchat least until NixOS/nixpkgs#245430 is fixed