PoC removing cmake and protoc as system-wide dependencies

Cargo.toml

@@ -94,3 +94,7 @@ bech32 = "0.11.0"
 
 [build-dependencies]
 tonic-prost-build = "0.14.1"
+protoc-bin-vendored = "3"
+
+[patch.crates-io]
+fedimint-tonic-lnd = { path = "vendor/fedimint-tonic-lnd" }

INSTALL.md

@@ -59,7 +59,7 @@ cargo --version
 ### Install dependencies
 
 ```bash
-apt-get install cmake build-essential libsqlite3-dev libssl-dev pkg-config git sqlite3 -y
+apt-get install build-essential libsqlite3-dev pkg-config git sqlite3 -y
 ```
 
 ### Compile Mostro

README.md

@@ -340,13 +340,13 @@ Mostro supports three deployment methods. For production deployments, see [INSTA
 Ubuntu/Debian:
 ```bash
 sudo apt update
-sudo apt install -y cmake build-essential libsqlite3-dev pkg-config protobuf-compiler
+sudo apt install -y build-essential libsqlite3-dev pkg-config
 ```
 
 macOS:
 ```bash
 brew update
-brew install cmake pkg-config sqlite3 protobuf
+brew install pkg-config sqlite3
 ```
 
 ---
@@ -825,8 +825,8 @@ rustup update stable
 cargo install sqlx-cli --version 0.6.2
 
 # Development dependencies
-sudo apt install protobuf-compiler cmake build-essential  # Ubuntu
-brew install protobuf cmake  # macOS
+sudo apt install build-essential  # Ubuntu
+# macOS: Xcode Command Line Tools provide the C compiler (xcode-select --install)
 ```
 
 3. **Setup local environment**:
@@ -854,6 +854,8 @@ cargo fmt --all -- --check
 cargo clippy --all-targets --all-features -- -D warnings
 ```
 
+**Note on Protobuf**: No system-wide `protoc` installation is required. Mostro ships a `.cargo/config.toml` that points all build scripts (including transitive dependencies like `fedimint-tonic-lnd`) at the `protoc-bin-vendored` binary via the `.cargo/protoc-wrapper` script. Everything is handled automatically by `cargo build`.
+
 ---
 
 ### Project Structure

build.rs

@@ -1,12 +1,18 @@
 use std::process::Command;
+
 fn main() {
-    // Compile protobuf definitions
+    if std::env::var_os("PROTOC").is_none() {
+        let protoc = protoc_bin_vendored::protoc_bin_path()
+            .expect("protoc-bin-vendored: could not determine protoc path");
+        std::env::set_var("PROTOC", &protoc);
+    }
+
+    // Compile protobuf definitions for the admin RPC service.
     tonic_prost_build::configure()
         .protoc_arg("--experimental_allow_proto3_optional")
         .compile_protos(&["proto/admin.proto"], &["proto"])
         .unwrap_or_else(|e| panic!("Failed to compile protos {:?}", e));
 
-    // note: add error checking yourself.
     println!("cargo:rerun-if-changed=.git/refs/head/main");
     let output = Command::new("git")
         .args(["rev-parse", "HEAD"])

docker/Dockerfile

@@ -3,7 +3,7 @@ FROM rust:1.86 AS builder
 
 # Install build dependencies
 RUN apt-get update && \
-    apt-get install -y --no-install-recommends cmake build-essential libsqlite3-dev pkg-config libssl-dev protobuf-compiler && \
+    apt-get install -y --no-install-recommends build-essential libsqlite3-dev pkg-config && \
     rm -rf /var/lib/apt/lists/*
 
 

docker/dockerfile-startos

@@ -3,7 +3,7 @@ FROM rust:1.86-alpine AS builder
 
 # Install build dependencies
 RUN apk update && \
-    apk add --no-cache cmake build-base sqlite-dev pkgconfig protoc perl git
+    apk add --no-cache build-base sqlite-dev pkgconfig git
 
 # Set working directory
 WORKDIR /mostro

vendor/fedimint-tonic-lnd/.cargo-ok

@@ -0,0 +1 @@
+{"v":1}

vendor/fedimint-tonic-lnd/.cargo_vcs_info.json

@@ -0,0 +1,6 @@
+{
+  "git": {
+    "sha1": "f0211b66553bcec973589fa88066eb11c6ebcfca"
+  },
+  "path_in_vcs": ""
+}

vendor/fedimint-tonic-lnd/.github/workflows/rust.yml

@@ -0,0 +1,31 @@
+name: Rust
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: download protoc
+        run: sudo apt-get install -y protobuf-compiler
+      - name: Show cargo version
+        run: cargo --version
+      - name: Fetch
+        run: |
+          cargo fetch --locked
+      - name: Build
+        run: |
+          cargo build --release --frozen
+      - name: Test
+        run: |
+          cargo test --release --frozen --workspace

vendor/fedimint-tonic-lnd/.gitignore

@@ -0,0 +1 @@
+/target