feat(Nix-flakes): Add pgBackRest flake (#1859)

Co-authored-by: samrose <samuel@supabase.io>

Author: jchancojr

flake.lock

@@ -19,6 +19,7 @@
  git-hooks.url = "github:cachix/git-hooks.nix";
  git-hooks.inputs.nixpkgs.follows = "nixpkgs";
  nixpkgs-go124.url = "github:Nixos/nixpkgs/d2ac4dfa61fba987a84a0a81555da57ae0b9a2b0";
+ nixpkgs-pgbackrest.url = "github:nixos/nixpkgs/nixos-unstable-small";
  };
 
  outputs =

flake.nix

@@ -40,6 +40,7 @@
  migrate-tool = pkgs.callPackage ./migrate-tool.nix { psql_15 = self'.packages."psql_15/bin"; };
  overlayfs-on-package = pkgs.callPackage ./overlayfs-on-package.nix { };
  packer = pkgs.callPackage ./packer.nix { inherit inputs; };
+ pg-backrest = inputs.nixpkgs-pgbackrest.legacyPackages.${pkgs.system}.pgbackrest;
  pg-restore = pkgs.callPackage ./pg-restore.nix { psql_15 = self'.packages."psql_15/bin"; };
  pg_prove = pkgs.perlPackages.TAPParserSourceHandlerpgTAP;
  pg_regress = makePgRegress activeVersion;