140 lines
4.2 KiB
Nix
140 lines
4.2 KiB
Nix
{
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description = "Build a cargo project without extra checks";
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
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crane.url = "github:ipetkov/crane";
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flake-utils.url = "github:numtide/flake-utils";
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rust-overlay = {
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url = "github:oxalica/rust-overlay";
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inputs.nixpkgs.follows = "nixpkgs";
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};
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};
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outputs =
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{
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self,
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nixpkgs,
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crane,
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flake-utils,
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...
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}@inputs:
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flake-utils.lib.eachDefaultSystem (
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system:
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let
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pkgs = import inputs.nixpkgs {
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inherit system;
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overlays = [ (import inputs.rust-overlay) ];
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};
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craneLib = (inputs.crane.mkLib pkgs).overrideToolchain (
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p:
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p.rust-bin.nightly.latest.default.override {
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extensions = [
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"rustc-codegen-cranelift-preview"
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"rust-analyzer"
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"rust-src"
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];
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}
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);
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# Runtime/shared libraries required by iced/iced_layershell/winit.
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# winit dlopens libwayland at runtime, so these must be on
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# LD_LIBRARY_PATH (see https://github.com/iced-rs/iced/issues/2385).
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guiLibs = [
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pkgs.wayland
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pkgs.wayland-protocols
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pkgs.libxkbcommon
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pkgs.vulkan-loader
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pkgs.libx11
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pkgs.libxcursor
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pkgs.libxrandr
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pkgs.libxi
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pkgs.libxcb
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];
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# Common arguments can be set here to avoid repeating them later
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# Note: changes here will rebuild all dependency crates
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commonArgs = {
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# Exclude build outputs regardless of git state (this repo is not
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# git-initialized, so cleanCargoSource would otherwise copy target/).
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src = pkgs.lib.cleanSourceWith {
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src = ./.;
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filter =
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path: type:
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let
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base = baseNameOf (toString path);
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in
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!(type == "directory" && (base == "target" || base == "result" || base == ".direnv"));
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};
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strictDeps = true;
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nativeBuildInputs =
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[
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pkgs.pkg-config
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]
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++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [
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pkgs.mold
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];
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# Link with mold (fast linker). Lives in commonArgs so deps and the
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# final crate share one flag set; note this rebuilds all dependency
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# crates once when first added.
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env = pkgs.lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
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RUSTFLAGS = "-C link-arg=-fuse-ld=mold";
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};
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buildInputs =
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guiLibs
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++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isDarwin [
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# Additional darwin specific inputs can be set here
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pkgs.libiconv
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];
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};
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my-crate = craneLib.buildPackage (
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commonArgs
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// {
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cargoArtifacts = craneLib.buildDepsOnly commonArgs;
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# Additional environment variables or build phases/hooks can be set
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# here *without* rebuilding all dependency crates
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# MY_CUSTOM_VAR = "some value";
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}
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);
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in
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{
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checks = {
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inherit my-crate;
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};
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packages.default = my-crate;
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apps.default = flake-utils.lib.mkApp {
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drv = my-crate;
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};
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devShells.default = craneLib.devShell {
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# Inherit inputs from checks.
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checks = self.checks.${system};
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# Put the GUI shared libraries on the runtime library path so winit
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# can dlopen libwayland and wgpu can find the vulkan loader.
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# No RUSTFLAGS here: an env RUSTFLAGS would override (not merge
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# with) ~/.cargo/config.toml's rustflags, giving devShell and
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# non-devShell builds different fingerprints and force-rebuilding
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# every dependency on each switch.
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shellHook = ''
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export LD_LIBRARY_PATH="$LD_LIBRARY_PATH:${pkgs.lib.makeLibraryPath guiLibs}"
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'';
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# Extra inputs can be added here; cargo and rustc are provided by default.
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packages = guiLibs ++ pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [ pkgs.mold ];
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};
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}
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);
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}
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