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{
inputs = {
nixpkgs = {
type = "github";
owner = "NixOS";
repo = "nixpkgs";
ref = "nixos-26.05";
};
crane = {
url = "github:ipetkov/crane";
};
};
outputs = { self, nixpkgs, crane }:
let supportedSystems = [ "aarch64-linux" "x86_64-linux" ];
forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
buildInputsFor = pkgs: with pkgs; [
# The list of packages needed feels more than a little bit random;
# it's because winit relies on packages that differ vastly in how and
# when they find the C libraries.
pkg-config
libgcc
libxcursor
libxi
libxkbcommon
vulkan-loader
# It might be nice to make this conditional; see also the patchelf
# call below.
vulkan-validation-layers
];
in {
packages = forAllSystems (system: let pkgs = nixpkgsFor.${system}; in {
default = ((crane.mkLib pkgs).buildPackage {
src = ./.;
buildInputs = buildInputsFor pkgs;
nativeBuildInputs = with pkgs; [ autoPatchelfHook ];
}).overrideAttrs {
# This needs to apply only to the top-level derivation, not to the
# dependencies.
preFixup = ''
# For whatever reason, Vulkan layers need to be added in a
# separate call before Vulkan itself is.
patchelf --add-needed libVkLayer_khronos_validation.so \
$out/bin/surreality
patchelf --add-needed libxkbcommon-x11.so \
--add-needed libvulkan.so.1 \
$out/bin/surreality
'';
};
});
devShells = forAllSystems (system: let pkgs = nixpkgsFor.${system}; in {
default = pkgs.mkShell {
nativeBuildInputs = with pkgs; [
cargo
rustc
vulkan-tools
] ++ buildInputsFor pkgs;
# This makes cargo run work; mind that you don't let it mask a
# problem with the nix build.
LD_LIBRARY_PATH = pkgs.lib.join ":"
(pkgs.lib.map (pkg: "${pkg}/lib") (with pkgs; [
libxkbcommon
vulkan-loader
vulkan-validation-layers
]));
};
});
};
}
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