feat(tvix/composition): allow urls as anonymous stores r/8785

This allows specifying an url in place of a named reference to another
composition entry, if the castore crate has been compiled with the
 xp-store-composition feature.

Example: `--directory-service-addr cache://?near=memory://&far=memory://`

This would be equivalent to the instantiation via toml file:

```toml
[memory1]
type = "memory"

[memory2]
type = "memory"

[default]
type = "cache"
near = "memory1"
far = "memory2"
```

Note that each anonymous url causes a distinct instance to be created.

Change-Id: Iee5a07a94b063b5e767c704d9cad0114fa843164
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12146
Reviewed-by: flokli <flokli@flokli.de>
Tested-by: BuildkiteCI

1 files changed, 2 insertions, 2 deletions

diff --git a/tvix/Cargo.nix b/tvix/Cargo.nix
index 3bce8c74afe5..7ef142fe162e 100644
--- a/tvix/Cargo.nix
+++ b/tvix/Cargo.nix
@@ -15401,7 +15401,7 @@ rec {
           "tonic-reflection" = [ "dep:tonic-reflection" ];
           "virtiofs" = [ "fs" "dep:vhost" "dep:vhost-user-backend" "dep:virtio-queue" "dep:vm-memory" "dep:vmm-sys-util" "dep:virtio-bindings" "fuse-backend-rs?/vhost-user-fs" "fuse-backend-rs?/virtiofs" ];
         };
-        resolvedDefaultFeatures = [ "cloud" "default" "fs" "fuse" "integration" "tonic-reflection" "virtiofs" ];
+        resolvedDefaultFeatures = [ "cloud" "default" "fs" "fuse" "integration" "tonic-reflection" "virtiofs" "xp-store-composition" ];
       };
       "tvix-cli" = rec {
         crateName = "tvix-cli";
@@ -16170,7 +16170,7 @@ rec {
           "tonic-reflection" = [ "dep:tonic-reflection" "tvix-castore/tonic-reflection" ];
           "tracy" = [ "tvix-tracing/tracy" ];
           "virtiofs" = [ "tvix-castore/virtiofs" ];
-          "xp-store-composition" = [ "toml" ];
+          "xp-store-composition" = [ "toml" "tvix-castore/xp-store-composition" ];
         };
         resolvedDefaultFeatures = [ "cloud" "default" "fuse" "integration" "otlp" "toml" "tonic-reflection" "tracy" "virtiofs" "xp-store-composition" ];
       };