diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..82b2b9e
--- /dev/null
+++ b/.envrc
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+# the shebang is ignored, but nice for editors
+
+if type -P lorri &>/dev/null; then
+  eval "$(lorri direnv)"
+else
+  echo 'while direnv evaluated .envrc, could not find the command "lorri" [https://github.com/nix-community/lorri]'
+  use nix
+fi
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..8a6b5a6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+/target
+2024/data/*/*.run
\ No newline at end of file
diff --git a/2024/Cargo.toml b/2024/Cargo.toml
new file mode 100644
index 0000000..ed83346
--- /dev/null
+++ b/2024/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "aoc2024"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.93"
+code-timing-macros = { version = "0.0.5", features = ["release"] }
+const_format = "0.2.33"
+itertools = "0.13.0"
+regex = "1.11.1"
+clap = { version = "4.5.21", features = ["derive", "cargo"] }
+colored-diff = "0.2.3"
+thiserror = "2.0.3"
\ No newline at end of file
diff --git a/2024/data/01/1.in b/2024/data/01/1.in
new file mode 100644
index 0000000..dfca0b1
--- /dev/null
+++ b/2024/data/01/1.in
@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3
\ No newline at end of file
diff --git a/2024/data/01/1.out b/2024/data/01/1.out
new file mode 100644
index 0000000..9d60796
--- /dev/null
+++ b/2024/data/01/1.out
@@ -0,0 +1 @@
+11
\ No newline at end of file
diff --git a/2024/data/01/2.in b/2024/data/01/2.in
new file mode 100644
index 0000000..fe669c4
--- /dev/null
+++ b/2024/data/01/2.in
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diff --git a/2024/src/bin/01.rs b/2024/src/bin/01.rs
new file mode 100644
index 0000000..7f74d2e
--- /dev/null
+++ b/2024/src/bin/01.rs
@@ -0,0 +1,31 @@
+use std::{fs::File, io::{BufRead, BufReader}};
+
+use anyhow::{anyhow, Result};
+use aoc2024::{Context, Day};
+use itertools::Itertools;
+
+fn part1(ctx: &Context) -> Result<String> {
+    let tuples = BufReader::new(File::open(&ctx.args.input)?).lines().map(|line| -> Result<_> {
+        let line = line?;
+        let nums = line.split_whitespace().map(|n| n.parse::<u32>()).filter_map(|n| n.ok()).collect_tuple::<(u32, u32)>().ok_or(anyhow!("Invalid input"))?;
+
+        Ok(nums)
+    });
+
+    let mut first = Vec::new();
+    let mut second = Vec::new();
+    for res in tuples {
+        let (x, y) = res?;
+        first.push(x);
+        second.push(y);
+    }
+    first.sort();
+    second.sort();
+    let sum: u32 = first.iter().zip(second).map(|(x, y)| x.abs_diff(y)).sum();
+
+    Ok(sum.to_string())
+}
+
+fn main() {
+    Day::new().part1(part1).run();
+}
\ No newline at end of file
diff --git a/2024/src/lib.rs b/2024/src/lib.rs
new file mode 100644
index 0000000..3518b3b
--- /dev/null
+++ b/2024/src/lib.rs
@@ -0,0 +1,121 @@
+use anyhow::Result;
+use clap::Parser;
+use colored_diff::PrettyDifference;
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+pub struct Args {
+    /// Which part to run (empty for both)
+    #[arg(short, long)]
+    pub part: Option<u8>,
+
+    /// Which input file to use
+    /// Will try to find an output file by replacing the extension with .out
+    #[arg(short, long)]
+    pub input: String,
+}
+
+#[derive(Debug)]
+pub struct Context {
+    pub args: Args,
+    pub day: u8,
+    pub output: String
+}
+
+impl Context {
+    fn new() -> Self {
+        let args = Args::parse();
+        let day = std::env::current_exe()
+            .unwrap()
+            .file_name()
+            .unwrap()
+            .to_str()
+            .unwrap()
+            .parse()
+            .unwrap();
+        let mut output = args.input.clone();
+        if let Some(pos) = output.rfind('.') {
+            output.replace_range(pos.., ".out");
+        }
+        Self { args, day, output }
+    }
+
+    fn read_output(&self) -> Option<String> {
+        std::fs::read_to_string(&self.output).ok()
+    }
+}
+
+type Part = fn(&Context) -> Result<String>;
+
+#[derive(Debug, Default)]
+pub struct Day {
+    part1: Option<Part>,
+    part2: Option<Part>,
+}
+
+impl Day {
+    pub fn new() -> Self {
+        Self::default()
+    }
+
+    pub fn part1(mut self, f: Part) -> Self {
+        self.part1 = Some(f);
+        self
+    }
+
+    pub fn part2(mut self, f: Part) -> Self {
+        self.part2 = Some(f);
+        self
+    }
+
+    fn has_part(&self, part: u8) -> bool {
+        match part {
+            1 => self.part1.is_some(),
+            2 => self.part2.is_some(),
+            _ => unreachable!()
+        }
+    }
+
+    fn verify_part(&self, part: u8, ctx: &Context) -> Result<()> {
+        println!("Day {} Part {}", ctx.day, part);
+        let expected = ctx.read_output();
+        let start = std::time::Instant::now();
+        let result = match part {
+            1 => self.part1.as_ref().unwrap()(ctx),
+            2 => self.part2.as_ref().unwrap()(ctx),
+            _ => unreachable!()
+        }?;
+        let elapsed = start.elapsed();
+        println!("Elapsed: {:?}", elapsed);
+        if let Some(expected) = expected {
+            println!("{}", PrettyDifference {
+                expected: &expected,
+                actual: &result
+            });
+            if result != expected {
+                std::process::exit(1);
+            }
+        } else {
+            println!("{}", result);
+            std::fs::write(ctx.output.to_string() + ".run", &result)?;
+            println!("Output written to {}", ctx.output.to_string() + ".run");
+        }
+        println!("OK");
+        Ok(())
+    }
+    
+    pub fn run(self) {
+        let ctx = Context::new();
+        match ctx.args.part {
+            Some(i) => self.verify_part(i, &ctx).unwrap(),
+            _ => {
+                for i in 1..=2 {
+                    if !self.has_part(i) {
+                        continue;
+                    }
+                    self.verify_part(i, &ctx).unwrap();
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
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new file mode 100644
index 0000000..f45a584
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..bcf83d2
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,3 @@
+[workspace]
+members = ["2024"]
+resolver = "2"
\ No newline at end of file
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..ae8f641
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,42 @@
+{ pkgs ? import <nixpkgs> {} }:
+let
+    # rust-rover things
+    rust-toolchain =
+        pkgs.symlinkJoin {
+            name = "rust-toolchain";
+            paths = with pkgs; [rustc cargo rustPlatform.rustcSrc clippy rustfmt gcc rust-analyzer];
+        };
+in
+pkgs.mkShell rec {
+    buildInputs = with pkgs;[
+        openssl
+        pkg-config
+        cmake
+        zlib
+        rust-toolchain
+
+        # common glutin
+        libxkbcommon
+        libGL
+
+        # winit wayland
+        wayland
+
+        # winit x11
+        xorg.libXcursor
+        xorg.libXrandr
+        xorg.libXi
+        xorg.libX11
+
+        # python
+        python3
+    ];
+    nativeBuildInputs = with pkgs; [
+        pkg-config
+        fontconfig
+    ];
+    LD_LIBRARY_PATH = "${pkgs.lib.makeLibraryPath buildInputs}";
+    OPENSSL_DIR="${pkgs.openssl.dev}";
+    OPENSSL_LIB_DIR="${pkgs.openssl.out}/lib";
+    RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
+}