feat(3p/litestream): Add derivation for litestream

This is a simple Go module build for https://litestream.io/

If this ends up being useful, we should upstream this to nixpkgs.

Change-Id: I3beb64c9adb3b57fcef4e1dfb27f293a15f90a76
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3085
Tested-by: BuildkiteCI
Reviewed-by: grfn <grfn@gws.fyi>

third_party/litestream/default.nix

@@ -0,0 +1,23 @@
+# TODO(tazjin): Upstream this derivation if litestream is good.
+{ pkgs, lib, ... }:
+
+let inherit (pkgs) buildGoModule fetchFromGitHub;
+in pkgs.buildGoModule rec {
+  pname = "litestream";
+  version = "0.3.4";
+  vendorSha256 = "1dcb5f06cq484i9m9pi5l4banygh3s4bz5964hy7ypmm1z2pcmrv";
+
+  src = pkgs.fetchFromGitHub {
+    owner = "benbjohnson";
+    repo = "litestream";
+    rev = "v${version}";
+    sha256 = "1ivyxgmbysir9qsbsz6nksjqzw6ba0zrymacsw12ab9bvbldjxv7";
+  };
+
+  meta = {
+    description = "Streaming S3 replication for SQLite";
+    homepage = "https://litestream.io/";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.tazjin ];
+  };
+}