Remove remaining xtask actions.

They're replaced by justfile equivalents.

I used a fairly quick and simple approach to find cargo workspace files
to operate on. We could improve on it, but I assume that it will be
removed soon.

Fixed: b/348023055

Change-Id: Ib2e09da59108852ae10af1255a46e642cb4c9ca6

Cargo.toml

@@ -66,7 +66,6 @@ members = [
   "stage0",
   "stage0_dice",
   "testing/oak_echo_service",
-  "xtask",
   "oak_restricted_kernel_sdk_proc_macro",
 ]
 exclude = [
@@ -145,7 +144,6 @@ oak_simple_io = { path = "./oak_simple_io" }
 oak_tdx_guest = { path = "./oak_tdx_guest" }
 oak_virtio = { path = "./oak_virtio" }
 sev_serial = { path = "./sev_serial" }
-xtask = { path = "./xtask" }
 # Common external crates.
 prost = { version = "*", default-features = false, features = ["prost-derive"] }
 prost-build = "*"

docs/CONTRIBUTING.md

@@ -62,9 +62,8 @@ are squashed against the correct commit if necessary.
 
 ## Style Guide
 
-Before submitting your PR, we ask you to run
-`./scripts/docker_run ./scripts/xtask format`, which formats code & docs
-according to our style guide.
+Before submitting your PR, we ask you to run `just format`, which formats code &
+docs according to our style guide.
 
 ### Rust
 

docs/development.md

@@ -159,14 +159,6 @@ above):
     -----------------------
     ```
 
-## xtask
-
-`xtask` is a utility binary to perform a number of common tasks within the Oak
-repository. It can be run by invoking `./scripts/xtask` from the root of the
-repository, and it has a number of flags and sub-commands available, which
-should be self-explanatory, and it also supports flag autocompletion when
-invoked from inside a Nix shell.
-
 ## Run Oak Functions Examples
 
 Running the integration tests for Oak Functions will confirm that all core

flake.nix

@@ -87,25 +87,6 @@
             };
           craneLib = (crane.mkLib pkgs).overrideToolchain rustToolchain;
           src = ./.;
-          # Build xtask as a package so that we can use it in the devShell and cache it in the
-          # future, without rebuilding it every time.
-          xtask = craneLib.buildPackage {
-            inherit src;
-            pname = "xtask";
-            version = "0.1.0";
-            cargoExtraArgs = "--package=xtask";
-            buildInputs = [
-              pkgs.protobuf
-            ];
-          };
-          # Build the dependencies of xtask as a package so that we can use it in the devShell and
-          # cache it in the future, without rebuilding it every time.
-          cargoDeps = craneLib.buildDepsOnly {
-            inherit src;
-            pname = "cargodeps";
-            version = "0.1.0";
-            cargoExtraArgs = "--package=xtask";
-          };
         in
         {
           packages = { inherit linux_kernel; inherit vanilla_linux_kernel; };
@@ -123,9 +104,6 @@
                 ps
                 which
               ];
-              shellHook = ''
-                source .xtask_bash_completion
-              '';
             };
             # Minimal shell with only the dependencies needed to run the Rust tests.
             rust = with pkgs; mkShell {