Add rust-toolchain.toml + shell.nix files.

This makes it easier to start a devshell without using Docker.

Author: brocaar

Dockerfile-devel

@@ -1,27 +1,6 @@
-FROM rust:1.66.1-buster
+FROM nixos/nix
 
-RUN apt-get update && \
-	apt-get install -y \
-		build-essential \
-		cmake \
-		clang \
-		libclang-dev \
-		llvm-dev \
-		git \
-		protobuf-compiler && \
-	apt-get clean
-
-RUN rustup component add rustfmt clippy
-RUN rustup target add armv5te-unknown-linux-gnueabi
-RUN rustup target add armv7-unknown-linux-gnueabihf
-RUN cargo install cargo-bitbake
-
-# Install opkg-utils
-RUN git clone git://git.yoctoproject.org/opkg-utils /opt/opkg-utils && \
-	cd /opt/opkg-utils && \
-	make install
-
-ENV LLVM_CONFIG_PATH=llvm-config
 ENV PROJECT_PATH=/chirpstack-udp-forwarder
-RUN mkdir -p $PROJECT_PATH
 WORKDIR $PROJECT_PATH
+
+ENTRYPOINT ["nix-shell"]

docker-compose.yml

@@ -7,6 +7,7 @@ services:
     volumes:
       - ./:/chirpstack-udp-forwarder
       - ./.rust/target:/chirpstack-udp-forwarder/target
-      - ./.rust/.cargo/registry/index:/usr/local/cargo/registry/index
-      - ./.rust/.cargo/registry/cache:/usr/local/cargo/registry/cache
-      - ./.rust/.cargo/git/db:/usr/local/cargo/git/db
+      - ./.rust/rustup:/usr/local/rustup
+      - ./.rust/cargo/registry/index:/usr/local/cargo/registry/index
+      - ./.rust/cargo/registry/cache:/usr/local/cargo/registry/cache
+      - ./.rust/cargo/git/db:/usr/local/cargo/git/db

rust-toolchain.toml

@@ -0,0 +1,5 @@
+[toolchain]
+channel = "1.69.0"
+components = ["rustfmt", "clippy"]
+targets = ["armv5te-unknown-linux-gnueabi", "armv7-unknown-linux-gnueabihf"]
+profile = "default"

shell.nix

@@ -0,0 +1,10 @@
+{ pkgs ? import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/nixos-22.11.tar.gz") {} }:
+
+pkgs.mkShell {
+  buildInputs = [
+    pkgs.cacert
+    pkgs.rustup
+    pkgs.protobuf
+    pkgs.cargo-bitbake
+  ];
+}