Initial commit of a working Chucya flake?

2025-07-22 14:02:41 -04:00 · 2025-07-22 14:02:41 -04:00 · 76efcf6748
commit 76efcf6748
10 changed files with 4186 additions and 0 deletions
--- a/chuckya/default.nix
+++ b/chuckya/default.nix
@ -0,0 +1,188 @@
+{ 
+  stdenv,
+  nodejs-slim,
+  bundlerEnv,
+  defaultGemConfig,
+  yarn-berry,
+  callPackage,
+  ruby,
+  writeShellScript,
+  brotli,
+  openssl,
+}:
+
+let
+
+  # optimally, updates only need to touch `version_data.nix`, and nothing else should be in there
+  versionData = import ./version_data.nix;
+
+  # use the first 7 characters of the chuckya commit hash as version string
+  version = builtins.substring 0 7 versionData.rev;
+
+  # the patched chuckya source
+  src = callPackage ./source.nix { };
+
+  # ruby gems, built from `gemset.nix`, which is generated by bundix in `update.sh` from the source Gemfile
+  mastodonGems = bundlerEnv {
+    name = "chuckya-gems-${version}";  # bundlerEnv breaks when pname is set instead
+    inherit version;
+    ruby = ruby;
+    gemset = ./gemset.nix;
+    gemdir = src;
+    /*
+    See:
+    - https://wiki.nixos.org/wiki/Packaging/Ruby#Adding_a_global_override_for_a_gem
+    - https://nixos.org/manual/nixpkgs/stable/#gem-specific-configurations-and-workarounds
+    */
+    gemConfig = defaultGemConfig // {
+      hiredis-client = attrs: {
+        buildInputs = [ openssl ];
+      };
+    };
+  };
+
+  # fetches JS dependencies via yarn based on the lockfile in the source
+  mastodonYarnDeps = yarn-berry.fetchYarnBerryDeps {
+    inherit src;
+    hash = versionData.yarnHash;
+    missingHashes = ./missing-hashes.json;
+  };
+
+  # builds the node modules for mastodon using the previously fetched yarn deps
+  mastodonModules = stdenv.mkDerivation {
+    pname = "chuckya-modules";
+    inherit version src;
+
+    yarnOfflineCache = mastodonYarnDeps;
+    missingHashes = ./missing-hashes.json;
+
+    nativeBuildInputs = [
+      nodejs-slim
+      yarn-berry
+      yarn-berry.yarnBerryConfigHook
+      brotli
+      mastodonGems
+      mastodonGems.wrappedRuby
+    ];
+
+    RAILS_ENV = "production";
+    NODE_ENV = "production";
+
+    /*
+    So it seems that somehow a change in Linux 6.9 changed something that broke libuv, an IO lib
+    used by Node. This undocumented env var disables the broken IO feature in libuv and it works
+    again.
+
+    - https://lore.kernel.org/lkml/d7003b6e-b8e3-41c4-9e6e-2b9abd0c5572@gmail.com/t/
+    - https://github.com/nodejs/node/issues/53051#issuecomment-2124940205
+    - https://github.com/nodejs/docker-node/issues/1912#issuecomment-1594233686
+    */
+    UV_USE_IO_URING = "0";
+
+    buildPhase = ''
+      runHook preBuild
+
+      export SECRET_KEY_BASE_DUMMY=1
+
+      patchShebangs bin
+
+      bundle exec rails assets:precompile
+
+      rm -rf node_modules/.cache
+
+      # Remove workspace "package" as it contains broken symlinks
+      # See https://github.com/NixOS/nixpkgs/issues/380366
+      rm -rf node_modules/@mastodon
+
+      # Remove execute permissions
+      find public/assets -type f ! -perm 0555 \
+        -exec chmod 0444 {} ';'
+
+      # Create missing static gzip and brotli files
+      # see: https://git.catgirl.cloud/999eagle/dotfiles-nix/-/blob/5d0da33c4f6b52b48777b404593c68a13e292721/overlay/mastodon/glitch/default.nix#L30
+      # see: https://code.hackerspace.pl/ar/nibylandia/src/commit/7bbb773554204026644fb98c9463fd15726976e9/pkgs/chuckya/modules.nix#L52
+      find public/assets public/packs -type f -regextype posix-extended -iregex '.*\.(css|html|js|js.map|json|svg)' \
+        -exec gzip --best --keep --force {} ';' \
+        -exec brotli --best --keep {} ';'
+
+      runHook postBuild
+    '';
+
+    installPhase = ''
+      runHook preInstall
+
+      mkdir -p $out/public
+      cp -r node_modules $out/node_modules
+      cp -r public/assets $out/public
+      cp -r public/packs $out/public
+
+      runHook postInstall
+    '';
+  };
+
+# the actual main chuckya package
+
+in stdenv.mkDerivation {
+
+  pname = "chuckya";
+  inherit version src mastodonGems mastodonModules;
+
+  propagatedBuildInputs = [ mastodonGems.wrappedRuby ];
+  nativeBuildInputs = [ brotli ];
+  buildInputs = [ mastodonGems nodejs-slim ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    ln -s $mastodonModules/node_modules node_modules
+    ln -s $mastodonModules/public/assets public/assets
+    ln -s $mastodonModules/public/packs public/packs
+
+    patchShebangs bin/
+    for b in $(ls $mastodonGems/bin/)
+    do
+      if [ ! -f bin/$b ]; then
+        ln -s $mastodonGems/bin/$b bin/$b
+      fi
+    done
+
+    # Remove execute permissions
+    chmod 0444 public/emoji/*.svg
+
+    # Create missing static gzip and brotli files
+    find public -maxdepth 1 -type f -regextype posix-extended -iregex '.*\.(css|js|svg|txt|xml)' \
+      -exec gzip --best --keep --force {} ';' \
+      -exec brotli --best --keep {} ';'
+    find public/emoji -type f -name '.*.svg' \
+      -exec gzip --best --keep --force {} ';' \
+      -exec brotli --best --keep {} ';'
+    ln -s assets/500.html.gz public/500.html.gz
+    ln -s assets/500.html.br public/500.html.br
+    ln -s packs/sw.js.gz public/sw.js.gz
+    ln -s packs/sw.js.br public/sw.js.br
+    ln -s packs/sw.js.map.gz public/sw.js.map.gz
+    ln -s packs/sw.js.map.br public/sw.js.map.br
+
+    rm -rf log
+    ln -s /var/log/mastodon log
+    ln -s /tmp tmp
+
+    runHook postBuild
+  '';
+
+  installPhase = let
+    run-streaming = writeShellScript "run-streaming.sh" ''
+      # NixOS helper script to consistently use the same NodeJS version the package was built with.
+      ${nodejs-slim}/bin/node ./streaming
+    '';
+  in ''
+    runHook preInstall
+
+    mkdir -p $out
+    cp -r * $out/
+    ln -s ${run-streaming} $out/run-streaming.sh
+
+    runHook postInstall
+  '';
+
+}