feat(tvix/tools/weave): init

Scalable tracing GC for the cache.nixos.org dataset.

Change-Id: I6c7852796f28e1a1c7607384ffb55f44407e1185
Reviewed-on: https://cl.tvl.fyi/c/depot/+/10765
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

tvix/tools/weave/Cargo.toml

@@ -0,0 +1,20 @@
+[package]
+name = "weave"
+version = "0.1.0"
+edition = "2021"
+
+[workspace]
+members = ["."]
+
+# TODO(edef): cut down on required features, this is kind of a grab bag right now
+[dependencies]
+anyhow = { version = "1.0.79", features = ["backtrace"] }
+hashbrown = "0.14.3"
+nix-compat = { version = "0.1.0", path = "../../nix-compat" }
+owning_ref = "0.4.1"
+rayon = "1.8.1"
+tokio = { version = "1.36.0", features = ["full"] }
+
+[dependencies.polars]
+version = "0.36.2"
+features = ["parquet"]