package up for the bot

default.nix

@@ -0,0 +1,38 @@
+# ty https://hoverbear.org/blog/a-flake-for-your-crate/
+
+{ lib
+, naersk
+, stdenv
+, clangStdenv
+, hostPlatform
+, targetPlatform
+, pkg-config
+, libiconv
+, rustfmt
+, cargo
+, rustc
+}:
+
+let
+  cargoToml = (builtins.fromTOML (builtins.readFile ./Cargo.toml));
+in
+
+naersk.lib."${targetPlatform.system}".buildPackage rec {
+  src = ./.;
+
+  buildInputs = [
+    rustfmt
+    pkg-config
+    cargo
+    rustc
+  ];
+  checkInputs = [ cargo rustc ];
+
+  doCheck = true;
+  CARGO_BUILD_INCREMENTAL = "false";
+  RUST_BACKTRACE = "full";
+  copyLibs = true;
+
+  name = cargoToml.package.name;
+  version = cargoToml.package.version;
+}

flake.lock

@@ -0,0 +1,48 @@
+{
+  "nodes": {
+    "naersk": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1745925850,
+        "narHash": "sha256-cyAAMal0aPrlb1NgzMxZqeN1mAJ2pJseDhm2m6Um8T0=",
+        "owner": "nmattia",
+        "repo": "naersk",
+        "rev": "38bc60bbc157ae266d4a0c96671c6c742ee17a5f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nmattia",
+        "repo": "naersk",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1751382304,
+        "narHash": "sha256-p+UruOjULI5lV16FkBqkzqgFasLqfx0bihLBeFHiZAs=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d31a91c9b3bee464d054633d5f8b84e17a637862",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "naersk": "naersk",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,63 @@
+# ty https://hoverbear.org/blog/a-flake-for-your-crate/
+{
+  description = "puyo TWO";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    naersk.url = "github:nmattia/naersk";
+    naersk.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = { self, nixpkgs, naersk }:
+    let
+      cargoToml = (builtins.fromTOML (builtins.readFile ./Cargo.toml));
+      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" ];
+      forAllSystems = f: nixpkgs.lib.genAttrs supportedSystems (system: f system);
+    in
+    {
+      overlay = final: prev: {
+        "${cargoToml.package.name}" = final.callPackage ./. { inherit naersk; };
+      };
+
+      packages = forAllSystems (system:
+        let
+          pkgs = import nixpkgs {
+            inherit system;
+            overlays = [
+              self.overlay
+            ];
+          };
+        in
+        {
+          "${cargoToml.package.name}" = pkgs."${cargoToml.package.name}";
+        });
+
+
+      defaultPackage = forAllSystems (system: (import nixpkgs {
+        inherit system;
+        overlays = [ self.overlay ];
+      })."${cargoToml.package.name}");
+
+      checks = forAllSystems (system:
+        let
+          pkgs = import nixpkgs {
+            inherit system;
+            overlays = [
+              self.overlay
+            ];
+          };
+        in
+        {
+          format = pkgs.runCommand "check-format"
+            {
+              buildInputs = with pkgs; [ rustfmt cargo ];
+            } ''
+            ${pkgs.rustfmt}/bin/cargo-fmt fmt --manifest-path ${./.}/Cargo.toml -- --check
+            ${pkgs.nixpkgs-fmt}/bin/nixpkgs-fmt --check ${./.}
+            touch $out # it worked!
+          '';
+          "${cargoToml.package.name}" = pkgs."${cargoToml.package.name}";
+        });
+    };
+
+}

result

@@ -0,0 +1 @@
+/nix/store/ysnlms9yadny09279xks5h0k1dzx1iqa-puyo-lang-0.1.0

src/eval.rs

@@ -2,6 +2,7 @@ use core::fmt;
 use std::{
     cell::RefCell,
     collections::{HashMap, hash_map::Entry},
+    io::{self, Write},
     ops, process,
     rc::Rc,
 };
@@ -181,8 +182,8 @@ fn eval<'a>(insts: &'a [Inst<'a>], stack: &mut Stack<'a>, env: &Rc<RefCell<Env<'
                 "floor" => stack.run_monadic(f64::floor),
                 "round" => stack.run_monadic(f64::round),
                 "expt" => stack.run_dyadic(f64::powf),
-                "=" => stack.run_dyadic(|a, b| if (a - b).abs() < 1e-10 { 1. } else { 0. }),
-                "<" => stack.run_dyadic(|a, b| if a < b { 1. } else { 0. }),
+                "=" => stack.run_dyadic(|a, b| ((a - b).abs() < 1e-10).into()),
+                "<" => stack.run_dyadic(|a, b| (a < b).into()),
                 "dup" => {
                     let top = stack.pop_default();
                     stack.push(top.clone());
@@ -195,7 +196,12 @@ fn eval<'a>(insts: &'a [Inst<'a>], stack: &mut Stack<'a>, env: &Rc<RefCell<Env<'
                     stack.push(b);
                 }
                 "print" => {
-                    println!("{}", stack.pop_default());
+                    print!("{}", stack.pop_default());
+                }
+                "put" => {
+                    #[allow(clippy::cast_sign_loss, clippy::cast_possible_truncation)]
+                    let byte = stack.pop_num() as u8;
+                    io::stdout().write_all(&[byte]).unwrap();
                 }
                 "explode" => {
                     eprintln!("I ESPLODED");
@@ -214,7 +220,11 @@ fn eval<'a>(insts: &'a [Inst<'a>], stack: &mut Stack<'a>, env: &Rc<RefCell<Env<'
                         then.call(stack);
                     }
                 }
-                _ => stack.push(env.borrow().get(var).expect("idk this var")),
+                _ => stack.push(
+                    env.borrow()
+                        .get(var)
+                        .unwrap_or_else(|| panic!("unknown variable: {var}")),
+                ),
             },
             Inst::Num(n) => stack.push(Val::Num(*n)),
             Inst::Call => {

src/main.rs

@@ -10,7 +10,7 @@ fn main() {
     let _ = io::stdin().read_to_string(&mut src).unwrap();
 
     let insts = parse(&src);
-    eprintln!("{}!\n{insts:#?}", Inst::Block(insts.clone()));
+    eprintln!("{}!", Inst::Block(insts.clone()));
 
     run(&insts);
 }