269 lines
9.7 KiB
Nix
269 lines
9.7 KiB
Nix
rec {
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description = "Rust Environment";
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inputs = {
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nixpkgs.url = "nixpkgs"; # Use nixpkgs from system registry
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flake-utils.url = "github:numtide/flake-utils";
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rust-overlay.url = "github:oxalica/rust-overlay";
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rust-overlay.inputs.nixpkgs.follows = "nixpkgs";
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};
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outputs = {
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self,
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nixpkgs,
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flake-utils,
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rust-overlay,
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}:
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# Create a shell (and possibly package) for each possible system, not only x86_64-linux
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flake-utils.lib.eachDefaultSystem (system: let
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# =========================================================================================
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# Define pkgs/stdenvs
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# =========================================================================================
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pkgs = import nixpkgs {
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inherit system;
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config.allowUnfree = true;
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overlays = [
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rust-overlay.overlays.default
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];
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};
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# clangPkgs = import nixpkgs {
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# inherit system;
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# config.allowUnfree = true;
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# overlays = [];
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#
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# # Use this to change the compiler:
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# # - GCC: pkgs.stdenv
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# # - Clang: pkgs.clangStdenv
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# # NixOS packages are built using GCC by default. Using clang requires a full rebuild/redownload.
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# config.replaceStdenv = {pkgs}: pkgs.clangStdenv;
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# };
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# Package set for cross-compilation
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# windowsPkgs = import nixpkgs {
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# inherit system;
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# crossSystem = {
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# config = "x86_64-w64-mingw32";
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# };
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# config.allowUnfree = true;
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# };
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inherit (pkgs) lib stdenv;
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# =========================================================================================
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# Define shell environment
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# =========================================================================================
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# Setup the shell when entering the "nix develop" environment (bash script).
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shellHook = let
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# Add project-local fish abbrs here
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abbrs = {
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# Rust Bevy:
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build-release-windows = "CARGO_FEATURE_PURE=1 cargo xwin build --release --target x86_64-pc-windows-msvc";
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};
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eraseAbbr = name: value: ''abbr --erase ${name} 2>/dev/null'';
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createAbbr = name: value: ''abbr -a ${name} "${value}"'';
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# This will be sourced by the global fish config if INIT_PROJECT_SHELL gets unset
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unloadProjectShell = pkgs.writers.writeFish "unload-shell.fish" ''
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echo "Unloading \"${description}\" environment..."
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${builtins.concatStringsSep "\n" (lib.mapAttrsToList eraseAbbr abbrs)}
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'';
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# This will be sourced by the global fish config if INIT_PROJECT_SHELL gets set
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initProjectShell = pkgs.writers.writeFish "init-shell.fish" ''
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# Unload just in case, to not have redefinition errors
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source ${unloadProjectShell}
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echo "Sourcing \"${description}\" environment..."
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${builtins.concatStringsSep "\n" (lib.mapAttrsToList createAbbr abbrs)}
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'';
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in
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builtins.concatStringsSep "\n" [
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# Launch into pure fish shell
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''
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# Determine the project root, used e.g. in cmake scripts
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export FLAKE_PROJECT_ROOT="$(git rev-parse --show-toplevel)"
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# Can't do the "exec" with nix-direnv
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# - The "exec fish" would call direnv again => Infinite loop
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# - The shellHook is Bash/POSIX, so fish syntax doesn't work
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# Use this for "nix develop" without direnv
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# exec "$(type -p fish)" -C "source ${initProjectShell} && abbr -a menu '${pkgs.bat}/bin/bat "${initProjectShell}"'"
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# Use this for direnv without "nix develop"
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export INIT_PROJECT_SHELL="${initProjectShell}"
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export UNLOAD_PROJECT_SHELL="${unloadProjectShell}"
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''
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# Qt: Launch into wrapped fish shell (direnv incompatible)
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# https://nixos.org/manual/nixpkgs/stable/#sec-language-qt
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# ''
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# fishdir=$(mktemp -d)
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# makeWrapper "$(type -p fish)" "$fishdir/fish" "''${qtWrapperArgs[@]}"
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# exec "$fishdir/fish" -C "source ${initProjectShell} && abbr -a menu '${pkgs.bat}/bin/bat "${initProjectShell}"'"
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# ''
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];
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# ===========================================================================================
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# Define custom dependencies
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# ===========================================================================================
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rust = pkgs.rust-bin.stable.latest.default.override {
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extensions = ["rust-src"]; # Include the Rust stdlib source (for IntelliJ)
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targets = ["x86_64-unknown-linux-gnu" "x86_64-pc-windows-msvc"];
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};
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# ===========================================================================================
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# Specify dependencies
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# https://nixos.org/manual/nixpkgs/stable/#ssec-stdenv-dependencies-overview
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# Just for a "nix develop" shell, buildInputs can be used for everything.
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# ===========================================================================================
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# Add dependencies to nativeBuildInputs if they are executed during the build:
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# - Those which are needed on $PATH during the build, for example cmake and pkg-config
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# - Setup hooks, for example makeWrapper
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# - Interpreters needed by patchShebangs for build scripts (with the --build flag), which can be the case for e.g. perl
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nativeBuildInputs = with pkgs; [
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rust
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mold
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cargo-expand
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cargo-xwin
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pkg-config
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];
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# Add dependencies to buildInputs if they will end up copied or linked into the final output or otherwise used at runtime:
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# - Libraries used by compilers, for example zlib
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# - Interpreters needed by patchShebangs for scripts which are installed, which can be the case for e.g. perl
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buildInputs = with pkgs; [
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udev
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alsa-lib
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vulkan-loader
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libxkbcommon
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wayland
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];
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# ===========================================================================================
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# Define buildable + installable packages
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# ===========================================================================================
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# package = stdenv.mkDerivation {
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# inherit nativeBuildInputs buildInputs;
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# pname = "";
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# version = "1.0.0";
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# src = ./.;
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#
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# installPhase = ''
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# runHook preInstall
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#
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# mkdir -p $out/bin
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# cp -rv ./${pname} $out/bin/
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#
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# runHook postInstall
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# '';
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# };
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# windowsPackage = windowsPkgs.stdenv.mkDerivation rec {
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# pname = "";
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# version = "1.0.0";
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# src = ./.;
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#
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# # nativeBuildInputs must be from the build-platform (not cross)
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# # so we use "pkgs" here, not "windowsPkgs"
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# nativeBuildInputs = with pkgs; [
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# cmake
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# ];
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#
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# buildInputs = with windowsPkgs; [];
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#
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# cmakeFlags = [
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# "-DCMAKE_SYSTEM_NAME=Windows"
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# ];
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#
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# installPhase = ''
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# runHook preInstall
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#
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# mkdir -p $out/bin
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# cp ./${pname}.exe $out/bin/
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#
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# runHook postInstall
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# '';
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# };
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in rec {
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# Provide package for "nix build"
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# packages = {
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# default = package;
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# windows = windowsPackage;
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# };
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# apps = {
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# default = flake-utils.lib.mkApp {drv = package;};
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# };
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devShells = {
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# Provide default environment for "nix develop".
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# Other environments can be added below.
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default = pkgs.mkShell {
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inherit nativeBuildInputs buildInputs shellHook;
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name = description;
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# =========================================================================================
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# Define environment variables
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# =========================================================================================
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# Rust stdlib source:
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RUST_SRC_PATH = "${rust}/lib/rustlib/src/rust/library";
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# Custom dynamic libraries:
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# LD_LIBRARY_PATH = builtins.concatStringsSep ":" [
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# # Rust Bevy GUI app:
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# # "${pkgs.libx11}/lib"
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# # "${pkgs.libxcursor}/lib"
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# # "${pkgs.libxrandr}/lib"
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# # "${pkgs.libxi}/lib"
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# # "${pkgs.libGL}/lib"
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#
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# # JavaFX app:
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# # "${pkgs.libGL}/lib"
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# # "${pkgs.gtk3}/lib"
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# # "${pkgs.glib.out}/lib"
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# # "${pkgs.xorg.libXtst}/lib"
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# ];
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# Dynamic libraries from buildinputs:
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LD_LIBRARY_PATH = nixpkgs.lib.makeLibraryPath buildInputs;
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# QT imports to use with "qmlls -E"
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# QML_IMPORT_PATH = "${pkgs.qt6.full}/lib/qt-6/qml";
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# Set PYTHONPATH
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# PYTHONPATH = ".";
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# Set matplotlib backend
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# MPLBACKEND = "TkAgg";
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};
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# Provide environment with clang stdenv for "nix develop .#clang"
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# clang =
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# pkgs.mkShell.override {
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# stdenv = pkgs.clangStdenv;
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# } {
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# inherit shellHook;
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# name = description;
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#
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# # If not required, use pkgs instead of clangPkgs for a lighter build
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# nativeBuildInputs = with pkgs; [];
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# buildInputs = with pkgs; [];
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#
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# # =========================================================================================
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# # Define environment variables
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# # =========================================================================================
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#
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# # Dynamic libraries from buildinputs:
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# LD_LIBRARY_PATH = nixpkgs.lib.makeLibraryPath buildInputs;
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# };
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};
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});
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}
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