aerogramme/flake.nix

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{
description = "Aerogramme";
inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/master";
flake-utils.url = "github:numtide/flake-utils";
# this patched version of cargo2nix makes easier to use clippy for building
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cargo2nix = {
type = "github";
owner = "Alexis211";
repo = "cargo2nix";
ref = "custom_unstable";
};
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# use rust project builds
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fenix.url = "github:nix-community/fenix/monthly";
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};
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outputs = { self, nixpkgs, cargo2nix, flake-utils, fenix }:
flake-utils.lib.eachSystem [
"x86_64-unknown-linux-musl"
"aarch64-unknown-linux-musl"
"armv6l-unknown-linux-musleabihf"
] (targetHost: let
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# with fenix, we get builds from the rust project.
# they are done with an old version of musl (prior to 1.2.x that is used in NixOS),
# however musl has a breaking change from 1.1.x to 1.2.x on 32 bit systems.
# so we pin the lib to 1.1.x to avoid recompiling rust ourselves.
muslOverlay = self: super: {
musl = super.musl.overrideAttrs(old: if targetHost == "armv6l-unknown-linux-musleabihf" then rec {
pname = "musl";
version = "1.1.24";
src = builtins.fetchurl {
url = "https://musl.libc.org/releases/${pname}-${version}.tar.gz";
sha256 = "sha256:18r2a00k82hz0mqdvgm7crzc7305l36109c0j9yjmkxj2alcjw0k";
};
} else {});
};
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pkgs = import nixpkgs {
system = "x86_64-linux"; # hardcoded as we will cross compile
crossSystem = {
config = targetHost; # here we cross compile
isStatic = true;
};
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overlays = [
cargo2nix.overlays.default
muslOverlay
];
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};
shell = pkgs.mkShell {
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buildInputs = [
cargo2nix.packages.x86_64-linux.default
];
};
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rustTarget = if targetHost == "armv6l-unknown-linux-musleabihf" then "arm-unknown-linux-musleabihf" else targetHost;
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# release builds
rustRelease = pkgs.rustBuilder.makePackageSet({
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packageFun = import ./Cargo.nix;
target = rustTarget;
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release = true;
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rustToolchain = with fenix.packages.x86_64-linux; combine [
minimal.cargo
minimal.rustc
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targets.${rustTarget}.latest.rust-std
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];
});
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# debug builds with clippy as the compiler (hack to speed up compilation)
debugBuildEnv = (drv:
''
${drv.setBuildEnv or ""}
echo
echo --- BUILDING WITH CLIPPY ---
echo
export NIX_RUST_BUILD_FLAGS="''${NIX_RUST_BUILD_FLAGS} --deny warnings"
export RUSTC="''${CLIPPY_DRIVER}"
'');
rustDebug = pkgs.rustBuilder.makePackageSet({
packageFun = import ./Cargo.nix;
target = rustTarget;
release = false;
rustToolchain = with fenix.packages.x86_64-linux; combine [
default.cargo
default.rustc
default.clippy
targets.${rustTarget}.latest.rust-std
];
packageOverrides = pkgs: pkgs.rustBuilder.overrides.all ++ [
(pkgs.rustBuilder.rustLib.makeOverride {
name = "aerogramme";
overrideAttrs = drv: {
setBuildEnv = (debugBuildEnv drv);
};
})
];
});
# binary extract
# @TODO
# docker packaging
# @TODO
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in {
devShells.default = shell;
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packages.debug = (rustDebug.workspace.aerogramme {}).bin;
packages.aerogramme = (rustRelease.workspace.aerogramme {}).bin;
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packages.default = self.packages.${targetHost}.aerogramme;
});
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}