refactor(tvix/castore): introduce "cloud" feature flag r/7749

This controls whether tvix-castore has support for various cloud
backends or not.

Use this to control the set of feature flags for the object_store
backend, and only enable the aws, azure and gcp ones if it's set.
In the future this can be used to enable/disable other cloud backends
too.

Without feature flags, `object_store` already supports the `InMemory`
and `LocalFilesystem` backends, and we also want to unconditionally
enable the `http` one. Make sure at least the construction of these
services is covered in the tests.

Similarly, the tvix-store crate, which provides the tvix-store CLI has a
`cloud` feature flag too (defaulting to enabled).

Change-Id: I9fb9c87b740e7dc83f8ff7a0862905d036d513f2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11204
Autosubmit: flokli <flokli@flokli.de>
Reviewed-by: raitobezarius <tvl@lahfa.xyz>
Tested-by: BuildkiteCI

1 files changed, 6 insertions, 4 deletions

diff --git a/tvix/Cargo.nix b/tvix/Cargo.nix
index 31d6faec252d..d3272843c2f7 100644
--- a/tvix/Cargo.nix
+++ b/tvix/Cargo.nix
@@ -12117,7 +12117,7 @@ rec {
           {
             name = "object_store";
             packageId = "object_store";
-            features = [ "aws" "azure" "gcp" "http" ];
+            features = [ "http" ];
           }
           {
             name = "parking_lot";
@@ -12243,12 +12243,13 @@ rec {
           }
         ];
         features = {
+          "cloud" = [ "object_store/aws" "object_store/azure" "object_store/gcp" ];
           "fs" = [ "dep:libc" "dep:fuse-backend-rs" ];
           "fuse" = [ "fs" ];
           "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 = [ "default" "fs" "fuse" "tonic-reflection" "virtiofs" ];
+        resolvedDefaultFeatures = [ "cloud" "default" "fs" "fuse" "tonic-reflection" "virtiofs" ];
       };
       "tvix-cli" = rec {
         crateName = "tvix-cli";
@@ -12927,13 +12928,14 @@ rec {
           }
         ];
         features = {
-          "default" = [ "fuse" "otlp" "tonic-reflection" ];
+          "cloud" = [ "tvix-castore/cloud" ];
+          "default" = [ "cloud" "fuse" "otlp" "tonic-reflection" ];
           "fuse" = [ "tvix-castore/fuse" ];
           "otlp" = [ "dep:opentelemetry" "dep:opentelemetry-otlp" "dep:opentelemetry_sdk" ];
           "tonic-reflection" = [ "dep:tonic-reflection" "tvix-castore/tonic-reflection" ];
           "virtiofs" = [ "tvix-castore/virtiofs" ];
         };
-        resolvedDefaultFeatures = [ "default" "fuse" "otlp" "tonic-reflection" "virtiofs" ];
+        resolvedDefaultFeatures = [ "cloud" "default" "fuse" "otlp" "tonic-reflection" "virtiofs" ];
       };
       "typenum" = rec {
         crateName = "typenum";