Remove workspace_members proc macro

Cargo.toml

@@ -46,7 +46,6 @@ members = [
     "common/test_random_derive",
     "common/validator_dir",
     "common/warp_utils",
-    "common/workspace_members",
     "consensus/fixed_bytes",
     "consensus/fork_choice",
     "consensus/int_to_bytes",
@@ -273,7 +272,6 @@ validator_store = { path = "validator_client/validator_store" }
 validator_test_rig = { path = "testing/validator_test_rig" }
 warp = { version = "0.3.7", default-features = false, features = ["tls"] }
 warp_utils = { path = "common/warp_utils" }
-workspace_members = { path = "common/workspace_members" }
 xdelta3 = { git = "https://github.com/sigp/xdelta3-rs", rev = "4db64086bb02e9febb584ba93b9d16bb2ae3825a" }
 zeroize = { version = "1", features = ["zeroize_derive", "serde"] }
 zip = { version = "6.0", default-features = false, features = ["deflate"] }

common/logging/Cargo.toml

@@ -19,4 +19,6 @@ tracing-appender = { workspace = true }
 tracing-core = { workspace = true }
 tracing-log = { workspace = true }
 tracing-subscriber = { workspace = true }
-workspace_members = { workspace = true }
+
+[build-dependencies]
+cargo_metadata = { workspace = true }

common/logging/build.rs

@@ -0,0 +1,46 @@
+//! This build script should only rerun when:
+//! 1. This build.rs file is changed.
+//! 2. The workspace Cargo.toml changes.
+//! 3. Build dependencies change.
+use cargo_metadata::MetadataCommand;
+use std::{env, fs, path::Path};
+
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+
+    let metadata = MetadataCommand::new()
+        .no_deps()
+        .exec()
+        .expect("Failed to get cargo metadata");
+
+    let workspace_cargo_toml = metadata.workspace_root.join("Cargo.toml");
+    println!("cargo:rerun-if-changed={}", workspace_cargo_toml);
+
+    let workspace_crates = get_workspace_crates(&metadata);
+
+    // A bit of a hacky way to generate the list of workspace crates and
+    // save to a file in OUT_DIR.
+    let mut code = String::from("&[\n");
+    for crate_name in &workspace_crates {
+        code.push_str(&format!("    \"{}\",\n", crate_name));
+    }
+    code.push_str("]\n");
+
+    let out_dir = env::var("OUT_DIR").unwrap();
+    let dest_path = Path::new(&out_dir).join("workspace_crates.rs");
+    fs::write(&dest_path, code).expect("Failed to write workspace_crates.rs");
+}
+
+fn get_workspace_crates(metadata: &cargo_metadata::Metadata) -> Vec<String> {
+    metadata
+        .workspace_members
+        .iter()
+        .filter_map(|member_id| {
+            metadata
+                .packages
+                .iter()
+                .find(|package| &package.id == member_id)
+                .map(|package| package.name.clone())
+        })
+        .collect()
+}

common/logging/src/utils.rs

@@ -1,8 +1,7 @@
 use std::collections::HashSet;
 use tracing_subscriber::filter::FilterFn;
-use workspace_members::workspace_crates;
 
-const WORKSPACE_CRATES: &[&str] = workspace_crates!();
+const WORKSPACE_CRATES: &[&str] = include!(concat!(env!("OUT_DIR"), "/workspace_crates.rs"));
 
 /// Constructs a filter which only permits logging from crates which are members of the workspace.
 pub fn build_workspace_filter()