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|
{
description = "A very basic flake";
inputs.nixpkgs = {
type = "github";
owner = "nixos";
repo = "nixpkgs";
ref = "master";
};
outputs = inputs@{ self, nixpkgs }: let
systems = [ "x86_64-linux" "aarch64-linux" "i686-linux" "x86_64-darwin" ];
forAllSystems = f: nixpkgs.lib.genAttrs systems (system: f system);
nixpkgsFor = forAllSystems (system:
import nixpkgs {
inherit system;
overlays = [ self.overlay ];
}
);
in {
overlay = final: prev: {
vendorCrates = with final; let
lockFile = builtins.fromTOML (builtins.readFile ./Cargo.lock);#(builtins.readFile self + "./Cargo.lock");
files = map (pkg: fetchurl {
name = pkg.name;
url = "https://crates.io/api/v1/crates/${pkg.name}/${pkg.version}/download";
sha256 = pkg.checksum;
}) (builtins.filter (pkg: pkg.source or "" == "registry+https://github.com/rust-lang/crates.io-index") lockFile.package);
in runCommand "cargo-vendor-dir" {}
''
mkdir -p $out/vendor
cat > $out/vendor/config << EOF
[source.crates-io]
replace-with = "vendored-sources"
[source.vendored-sources]
directory = "vendor"
EOF
${toString (builtins.map (file: ''
mkdir $out/vendor/tmp
tar xvf ${file} -C $out/vendor/tmp
dir=$(echo $out/vendor/tmp/*)
printf '{"files":{},"package":"${file.outputHash}"}' > "$dir/.cargo-checksum.json"
if [[ $dir =~ /winapi ]]; then
find $dir -name "*.a" -print0 | xargs -0 rm -f --
fi
mv "$dir" $out/vendor/
rm -rf $out/vendor/tmp
'') files)}
'';
backend = with final; stdenv.mkDerivation {
name = "backend";
src = self;
nativeBuildInputs = [
cargo rustc
];
buildPhase = ''
ln -sfn ${vendorCrates}/vendor/ vendor
export CARGO_HOME=$(pwd)/vendor
cargo build --release --offline
'';
installPhase = ''
install -D -m755 ./target/release/backend $out/bin/backend
'';
doCheck = true;
checkPhase = ''
cargo test --release -- --nocapture
'';
};
};
packages = forAllSystems (system: {
inherit (nixpkgsFor.${system}) backend vendorCrates;
});
defaultPackage = forAllSystems (system: self.packages.${system}.backend);
};
}
|
