commit f743cc4e8ef6f88d77f6069c453d404da7b8c65e · dunkirk.sh/aoc-2025

.gitignore

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       # Finder (MacOS) folder config

     

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       .DS_Store

     

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       # nix

     

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       .direnv

     

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       .envrc

+14 -2

README.md

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       # Advent of Code 2025 - Kieran's way

     

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       ![made with vhs](https://vhs.charm.sh/vhs-4Iru9nKzVVROVumbtUEW20.gif)

     

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       This contains my solutions to advent of code 2025 in mostly `ts` or `nix` depending on how lazy I'm feeling that day.

     

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       ## Running Solutions

     

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       Either you can run the days manually or you can use direnv and the `aoc` tui I made!

     

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       ```bash

     

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       bun run index.ts

     

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       nix-instantiate --eval --strict solution.nix

     

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       echo "use flake" >> .envrc && direnv allow

     

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       ```

     

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       the rather boring manual way:

     

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       ```bash

     

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       cd ts/01 && bun run index.ts

     

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       nix-instantiate --eval --strict nix/01/solution.nix

     

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       ```

     

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       The main repo is [the tangled repo](https://tangled.org/dunkirk.sh/aoc-2025) and the github is just a mirror.

+15

demo.tape

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       Output demo.gif

     

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       Set FontSize 14

     

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       Set Width 600

     

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       Set Height 500

     

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       Set Theme "Catppuccin Mocha"

     

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       Type "aoc"

     

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       Enter

     

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       Sleep 3s

     

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       # Choose "Run all solutions"

     

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       Down

     

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       Enter

     

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       Sleep 5s

+61

flake.lock

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       {

     

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         "nodes": {

     

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           "flake-utils": {

     

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             "inputs": {

     

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               "systems": "systems"

     

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             },

     

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             "locked": {

     

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               "lastModified": 1731533236,

     

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               "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",

     

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               "owner": "numtide",

     

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               "repo": "flake-utils",

     

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               "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",

     

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               "type": "github"

     

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             },

     

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             "original": {

     

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               "owner": "numtide",

     

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               "repo": "flake-utils",

     

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               "type": "github"

     

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             }

     

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           },

     

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           "nixpkgs": {

     

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             "locked": {

     

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               "lastModified": 1764517877,

     

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               "narHash": "sha256-pp3uT4hHijIC8JUK5MEqeAWmParJrgBVzHLNfJDZxg4=",

     

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               "owner": "NixOS",

     

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               "repo": "nixpkgs",

     

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               "rev": "2d293cbfa5a793b4c50d17c05ef9e385b90edf6c",

     

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               "type": "github"

     

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             },

     

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             "original": {

     

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               "owner": "NixOS",

     

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               "ref": "nixos-unstable",

     

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               "repo": "nixpkgs",

     

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               "type": "github"

     

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             }

     

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           },

     

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           "root": {

     

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             "inputs": {

     

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               "flake-utils": "flake-utils",

     

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               "nixpkgs": "nixpkgs"

     

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             }

     

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           },

     

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           "systems": {

     

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             "locked": {

     

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               "lastModified": 1681028828,

     

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               "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",

     

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               "owner": "nix-systems",

     

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               "repo": "default",

     

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               "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",

     

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               "type": "github"

     

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             },

     

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             "original": {

     

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               "owner": "nix-systems",

     

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               "repo": "default",

     

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               "type": "github"

     

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             }

     

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           }

     

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         },

     

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         "root": "root",

     

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         "version": 7

     

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       }

+184

flake.nix

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       {

     

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         description = "Advent of Code 2025 Solutions";

     

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         inputs = {

     

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           nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

     

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           flake-utils.url = "github:numtide/flake-utils";

     

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         };

     

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         outputs = { self, nixpkgs, flake-utils }:

     

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           flake-utils.lib.eachDefaultSystem (system:

     

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             let

     

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               pkgs = nixpkgs.legacyPackages.${system};

     

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               gum = pkgs.gum;

     

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               # Get list of available days

     

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               getDays = ''

     

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                 days=()

     

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                 for dir in ts/* nix/*; do

     

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                   if [ -d "$dir" ]; then

     

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                     day=$(basename "$dir")

     

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                     if [[ ! " ''${days[@]} " =~ " ''${day} " ]]; then

     

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                       days+=("$day")

     

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                     fi

     

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                   fi

     

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                 done

     

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                 echo "''${days[@]}" | tr ' ' '\n' | sort

     

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               '';

     

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               # Run a specific day's solution

     

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               runDay = day: lang: ''

     

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                 if [ "$lang" = "ts" ] && [ -f "ts/${day}/index.ts" ]; then

     

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                   ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" --margin "1 0" "Day ${day} (TypeScript)"

     

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                   (cd ts/${day} && ${pkgs.bun}/bin/bun run index.ts)

     

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                 elif [ "$lang" = "nix" ] && [ -f "nix/${day}/solution.nix" ]; then

     

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                   ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" --margin "1 0" "Day ${day} (Nix)"

     

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                   result=$(${pkgs.nix}/bin/nix-instantiate --eval --strict --json nix/${day}/solution.nix)

     

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                   part1=$(echo "$result" | ${pkgs.jq}/bin/jq -r '.part1')

     

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                   part2=$(echo "$result" | ${pkgs.jq}/bin/jq -r '.part2')

     

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                   echo "part 1: $part1"

     

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                   echo "part 2: $part2"

     

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                 fi

     

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               '';

     

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               # Interactive runner with gum

     

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               runner = pkgs.writeShellScriptBin "aoc" ''

     

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                 set -e

     

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                 ${gum}/bin/gum style \

     

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                   --border double \

     

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                   --border-foreground 212 \

     

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                   --padding "1 2" \

     

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                   --margin "1 0" \

     

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                   "$(${gum}/bin/gum style --foreground 212 '🎄 Advent of Code 2025 🎄')"

     

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                 # Choose action

     

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                 action=$(${gum}/bin/gum choose "Run specific day" "Run all solutions" "Exit")

     

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                 case "$action" in

     

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                   "Run specific day")

     

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                     # Get available days

     

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                     days=$(${getDays})

     

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                     if [ -z "$days" ]; then

     

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                       ${gum}/bin/gum style --foreground 196 "No solutions found!"

     

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                       exit 1

     

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                     fi

     

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                     day=$(echo "$days" | ${gum}/bin/gum choose)

     

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                     # Check what languages are available for this day

     

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                     langs=()

     

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                     [ -f "ts/$day/index.ts" ] && langs+=("TypeScript")

     

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                     [ -f "nix/$day/solution.nix" ] && langs+=("Nix")

     

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                     langs+=("Both")

     

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                     lang=$(printf '%s\n' "''${langs[@]}" | ${gum}/bin/gum choose)

     

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                     echo ""

     

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                     case "$lang" in

     

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                       "TypeScript")

     

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                         if [ -f "ts/$day/index.ts" ]; then

     

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                           ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" "Day $day"

     

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                           echo ""

     

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                           ${gum}/bin/gum style --foreground 212 "TypeScript:"

     

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                           (cd ts/$day && ${pkgs.bun}/bin/bun run index.ts)

     

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                         fi

     

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                         ;;

     

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                       "Nix")

     

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                         if [ -f "nix/$day/solution.nix" ]; then

     

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                           ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" "Day $day"

     

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                           echo ""

     

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                           ${gum}/bin/gum style --foreground 212 "Nix:"

     

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                           result=$(${pkgs.nix}/bin/nix-instantiate --eval --strict --json nix/$day/solution.nix)

     

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                           echo "$result" | ${pkgs.jq}/bin/jq -r 'to_entries | .[] | "\(.key): \(.value)"'

     

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                         fi

     

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                         ;;

     

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                       "Both")

     

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                         ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" "Day $day"

     

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                         echo ""

     

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                         if [ -f "ts/$day/index.ts" ]; then

     

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                           ${gum}/bin/gum style --foreground 212 "TypeScript:"

     

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                           (cd ts/$day && ${pkgs.bun}/bin/bun run index.ts)

     

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                           echo ""

     

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                         fi

     

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                         if [ -f "nix/$day/solution.nix" ]; then

     

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                           ${gum}/bin/gum style --foreground 212 "Nix:"

     

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                           result=$(${pkgs.nix}/bin/nix-instantiate --eval --strict --json nix/$day/solution.nix)

     

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                           echo "$result" | ${pkgs.jq}/bin/jq -r 'to_entries | .[] | "\(.key): \(.value)"'

     

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                         fi

     

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                         ;;

     

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                     esac

     

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                     ;;

     

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       +
                     

     

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                   "Run all solutions")

     

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                     # Collect all unique days

     

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                     all_days=()

     

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                     for dir in ts/* nix/*; do

     

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                       if [ -d "$dir" ]; then

     

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                         day=$(basename "$dir")

     

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                         if [[ ! " ''${all_days[@]} " =~ " ''${day} " ]]; then

     

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                           all_days+=("$day")

     

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                         fi

     

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                       fi

     

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                     done

     

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       +
                     

     

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                     # Sort and run each day

     

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                     for daynum in $(printf '%s\n' "''${all_days[@]}" | sort); do

     

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                       ${gum}/bin/gum style --border rounded --border-foreground 212 --padding "0 1" "Day $daynum"

     

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                       echo ""

     

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       +
                       

     

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                       if [ -f "ts/$daynum/index.ts" ]; then

     

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                         ${gum}/bin/gum style --foreground 212 "TypeScript:"

     

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                         (cd ts/$daynum && ${pkgs.bun}/bin/bun run index.ts)

     

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                         echo ""

     

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                       fi

     

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       +
                       

     

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                       if [ -f "nix/$daynum/solution.nix" ]; then

     

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                         ${gum}/bin/gum style --foreground 212 "Nix:"

     

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                         result=$(${pkgs.nix}/bin/nix-instantiate --eval --strict --json nix/$daynum/solution.nix)

     

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                         echo "$result" | ${pkgs.jq}/bin/jq -r 'to_entries | .[] | "\(.key): \(.value)"'

     

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                         echo ""

     

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                       fi

     

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                     done

     

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                     ;;

     

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       +
                     

     

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                   "Exit")

     

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                     ${gum}/bin/gum style --foreground 212 "Happy coding! 🎅"

     

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                     exit 0

     

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                     ;;

     

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                 esac

     

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       +
               '';

     

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       +
               

     

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             in {

     

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               # Development shell with all tools

     

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               devShells.default = pkgs.mkShell {

     

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       +
                 packages = with pkgs; [

     

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       +
                   bun

     

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       158
       +
                   jq

     

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       +
                   gum

     

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       +
                   runner

     

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       +
                 ];

     

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       +
                 

     

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       +
                 shellHook = ''

     

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       +
                   ${gum}/bin/gum style --foreground 212 "🎄 Advent of Code 2025 🎄"

     

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       +
                   echo ""

     

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       +
                   ${gum}/bin/gum style "Run 'aoc' to start the interactive runner"

     

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       +
                 '';

     

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       +
               };

     

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       +
               

     

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       +
               # Packages

     

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       +
               packages = {

     

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       +
                 default = runner;

     

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       +
               };

     

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       +
               

     

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       +
               # Apps

     

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       +
               apps = {

     

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       +
                 default = {

     

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       +
                   type = "app";

     

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                   program = "${runner}/bin/aoc";

     

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                 };

     

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               };

     

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             }

     

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       +
           );

     

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       }