Download flatc instead of building it from source (#374)

.github/actions/setup-rust/action.yml

@@ -32,6 +32,13 @@ runs:
         echo "RUSTC_WRAPPER=sccache" >> $GITHUB_ENV
         echo "CARGO_INCREMENTAL=0" >> $GITHUB_ENV
 
+    - name: Download flatc
+      shell: bash
+      run: |
+        curl -sL https://github.com/google/flatbuffers/releases/download/v24.3.25/Linux.flatc.binary.clang++-15.zip > ${{ runner.temp }}/flatc.zip
+        unzip ${{ runner.temp }}/flatc.zip -d ${{ runner.temp }}/flatc
+        echo "PATH=${{ runner.temp }}/flatc:$PATH" >> $GITHUB_ENV
+
     - name: Export Path
       shell: bash
       run: echo "PATH=$PATH" >> $GITHUB_ENV

Cargo.toml

@@ -64,8 +64,7 @@ duckdb = { version = "0.10.1", features = ["bundled"] }
 enum-iterator = "2.0.0"
 enum_dispatch = "0.3.13"
 fallible-iterator = "0.3.0"
-flatbuffers = "23.5.26"
-flatc = "0.2.2"
+flatbuffers = "24.3.25"
 flexbuffers = "2.0.0"
 fs_extra = "1.3.0"
 futures = { version = "0.3.30", default-features = false }

README.md

@@ -169,6 +169,13 @@ git submodule update --init --recursive
 rye sync
 ```
 
+You will also need to install flatbuffer compiler (flatc):
+
+### Mac
+```bash
+brew install flatbuffers
+```
+
 ## License
 
 Licensed under the Apache License, Version 2.0 (the "License").

build-vortex/Cargo.toml

@@ -12,7 +12,6 @@ rust-version.workspace = true
 
 [dependencies]
 cargo_metadata = { workspace = true }
-flatc = { workspace = true }
 prost-build = { workspace = true }
 walkdir = { workspace = true }
 

build-vortex/src/lib.rs

@@ -5,7 +5,6 @@ use std::path::{Path, PathBuf};
 use std::process::Command;
 
 use cargo_metadata::MetadataCommand;
-use flatc::flatc;
 use walkdir::WalkDir;
 
 fn manifest_dir() -> PathBuf {
@@ -66,7 +65,7 @@ pub fn build_flatbuffers() {
     let flatbuffers_dir = manifest_dir().join("flatbuffers");
     let fbs_files = walk_files(&flatbuffers_dir, "fbs");
     check_call(
-        Command::new(flatc())
+        Command::new("flatc")
             .arg("--rust")
             .arg("--filename-suffix")
             .arg("")