NaxGCC-FW/flake.nix

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{
description = "Firmware for the NaxGCC";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-23.11";
rust-overlay.url = "github:oxalica/rust-overlay";
flake-utils.url = "github:numtide/flake-utils";
embassy-rs-patched = {
url = "git+https://gitea@git.naxdy.org/NaxdyOrg/embassy?ref=naxgcc-fw";
flake = false;
};
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naersk = {
url = "github:nmattia/naersk";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs =
{ self
, nixpkgs
, rust-overlay
, flake-utils
, naersk
, embassy-rs-patched
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}: (flake-utils.lib.eachDefaultSystem (system:
let
pkgs = import nixpkgs {
inherit system;
overlays = [
rust-overlay.overlays.default
];
config.allowUnsupportedSystem = true;
};
rustToolchain = pkgs.rust-bin.stable.latest.default.override {
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extensions = [
"rust-src"
];
targets = [
"thumbv6m-none-eabi"
];
};
naersk_lib = naersk.lib.${system}.override {
cargo = rustToolchain;
rustc = rustToolchain;
};
CARGO_BUILD_TARGET = "thumbv6m-none-eabi";
prepCmd = ''
mkdir -p lib
rm lib/embassy-rs || true
ln -s "${embassy-rs-patched}" lib/embassy-rs
'';
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in
{
packages.default = self.packages.${system}.naxgcc-fw-uf2;
packages.naxgcc-fw-uf2 = pkgs.runCommandLocal "${self.packages.${system}.naxgcc-fw.pname}-uf2-${self.packages.${system}.naxgcc-fw.version}" { } ''
mkdir -p $out/bin
${pkgs.elf2uf2-rs}/bin/elf2uf2-rs ${self.packages.${system}.naxgcc-fw}/bin/${self.packages.${system}.naxgcc-fw.pname} $out/bin/${self.packages.${system}.naxgcc-fw.pname}.uf2
'';
packages.naxgcc-fw = naersk_lib.buildPackage {
pname = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package.name;
version = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package.version;
prePatch = prepCmd;
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src = self;
cargoBuildOptions = _orig: _orig ++ [
"--target=${CARGO_BUILD_TARGET}"
];
# if a tree falls in the forest and no one is around to hear it, does it make a sound?
DEFMT_LOG = "off";
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};
devShells.default = pkgs.mkShell {
nativeBuildInputs = builtins.attrValues {
inherit rustToolchain;
inherit (pkgs) gcc-arm-embedded elf2uf2-rs picotool probe-rs cargo-expand;
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};
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CARGO_TARGET_THUMBV6M_NONE_EABI_RUNNER = "probe-rs run --chip RP2040 --protocol swd";
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DEFMT_LOG = "debug";
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inherit CARGO_BUILD_TARGET;
shellHook = prepCmd;
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};
}));
}