add flake dev env

.cargo/config.toml

@@ -0,0 +1,2 @@
+[unstable]
+build-std = ["std", "panic_abort", "core", "alloc"]

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -1,2 +1,3 @@
 /target
-Cargo.lock
+/.direnv
+/result

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "arena-latency-slider"
-version = "0.1.0"
+version = "0.2.0"
 authors = []
 edition = "2021"
 
@@ -12,11 +12,11 @@ crate-type = ["cdylib"]
 
 [dependencies]
 ninput = { git = "https://github.com/blu-dev/ninput", version = "0.1.0" }
-skyline = "0.2.0"
+skyline = "0.2.1"
 
 [profile.dev]
 panic = "abort"
 
 [profile.release]
 panic = "abort"
-lto = true
+lto = true

flake.nix

@@ -0,0 +1,80 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
+
+    flake-utils.url = "github:numtide/flake-utils";
+
+    rust-overlay.url = "github:oxalica/rust-overlay";
+
+    cargo-skyline-src = {
+      url = "github:jam1garner/cargo-skyline";
+      flake = false;
+    };
+
+    skyline-rs = {
+      url = "github:ultimate-research/skyline-rs";
+      flake = false;
+    };
+  };
+
+  outputs =
+    { self
+    , nixpkgs
+    , flake-utils
+    , rust-overlay
+    , cargo-skyline-src
+    , skyline-rs
+    }: (flake-utils.lib.eachDefaultSystem (system:
+    let
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [
+          rust-overlay.overlays.default
+        ];
+      };
+
+      rustToolchain = (pkgs.rust-bin.nightly."2023-12-30".default.override {
+        extensions = [
+          "rust-src"
+          "rust-std"
+        ];
+      });
+      rustPlatform = pkgs.makeRustPlatform {
+        cargo = rustToolchain;
+        rustc = rustToolchain;
+      };
+
+      cargo-skyline = rustPlatform.buildRustPackage {
+        pname = "cargo-skyline";
+        version = (builtins.fromTOML (builtins.readFile "${cargo-skyline-src}/Cargo.toml")).package.version;
+
+        src = cargo-skyline-src;
+
+        cargoLock = {
+          lockFile = "${cargo-skyline-src}/Cargo.lock";
+        };
+
+        meta = {
+          description = "A cargo subcommand for working with Skyline plugins written in Rust";
+        };
+      };
+    in
+    {
+      packages.rustToolchain = rustToolchain;
+
+      devShells.default = pkgs.mkShell {
+        nativeBuildInputs = builtins.attrValues {
+          inherit cargo-skyline;
+
+          # for now, we use rustup to manage the toolchain
+          # because skyline has some weird customizations that
+          # I don't feel like getting into at this point in time
+          # this means no reproducible builds (for now), but I can live with that
+          inherit (pkgs) rustup;
+        };
+
+        # this is mainly for rust-analyzer to not get confused
+        CARGO_BUILD_TARGET = "${skyline-rs}/aarch64-skyline-switch.json";
+      };
+    }));
+}

src/lib.rs

@@ -1,3 +1,5 @@
+#![feature(restricted_std)]
+
 use skyline::hooks::InlineCtx;
 
 #[skyline::from_offset(0x37a1270)]