feat(tvix/build), add OciBuildService, the old way r/8744

This is just patchset 10 of CL10855, before the color_eyre changes,
rebased to the tvix_castore api.

Change-Id: If4b42412ff8568058908cda971ad7d6f2d9f9b7b

---
This provides a build service invoking runc. It can be used by using the
`oci://$path_to_some_tempdir` builder URL for now.

For now, it can be tested as such:

```
BUILD_SERVICE_ADDR=oci://$PWD/bundles target/debug/tvix
let pkgs = (import <nixpkgs> {}); in builtins.readDir pkgs.perl
```

readDir is to actually trigger IO into the store path (which triggers
the builds).

For now it fails due to missing reference scanning (see followup CLs).

Change-Id: I09b40e410114ce69966a41a0e3c33281b859e443
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12526
Autosubmit: yuka <yuka@yuka.dev>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

1 files changed, 15 insertions, 3 deletions

diff --git a/tvix/build/Cargo.toml b/tvix/build/Cargo.toml
index b9073b7ff61a..842c4e7afad8 100644
--- a/tvix/build/Cargo.toml
+++ b/tvix/build/Cargo.toml
@@ -9,16 +9,26 @@ clap = { workspace = true, features = ["derive", "env"] }
 itertools = { workspace = true }
 prost = { workspace = true }
 thiserror = { workspace = true }
-tokio = { workspace = true }
+tokio = { workspace = true, features = ["process"] }
 tokio-listener = { workspace = true, features = ["tonic012"] }
 tonic = { workspace = true, features = ["tls", "tls-roots"] }
-tvix-castore = { path = "../castore" }
-tvix-tracing = { path = "../tracing" }
+# TODO: put the fuse dep behind a feature flag?
+tvix-castore = { path = "../castore", features = ["fuse"]}
 tracing = { workspace = true }
 url = { workspace = true }
 mimalloc = { workspace = true }
 tonic-reflection = { workspace = true, optional = true }
 
+anyhow = "1.0.79"
+blake3 = "1.5.0"
+bstr = "1.6.0"
+data-encoding = "2.5.0"
+futures = "0.3.30"
+oci-spec = "0.6.4"
+serde_json = "1.0.111"
+tvix-tracing = { path = "../tracing" }
+uuid = { version = "1.7.0", features = ["v4"] }
+
 [build-dependencies]
 prost-build = { workspace = true }
 tonic-build = { workspace = true }
@@ -29,6 +39,8 @@ tonic-reflection = ["dep:tonic-reflection", "tvix-castore/tonic-reflection"]
 
 [dev-dependencies]
 rstest = { workspace = true }
+lazy_static = "1.4.0"
+tempfile = "3.3.0"
 
 [lints]
 workspace = true