{
  description = "Shared Quixos protobuf protocol definitions";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = { self, nixpkgs, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };
        nodejs = pkgs.nodejs_24;
        quixos-protocol = (pkgs.callPackage ./yarn-project.nix { inherit nodejs; }) {
          src = pkgs.lib.cleanSource ./.;
          overrideAttrs = old: {
          nativeBuildInputs = (old.nativeBuildInputs or [ ]) ++ [
            pkgs.diffutils
            pkgs.esbuild
            pkgs.protobuf
            pkgs.git
            pkgs.jujutsu
            pkgs.gnutar
          ];
          buildPhase = ''
            runHook preBuild
            mkdir -p "$TMPDIR/generated-before"
            cp --recursive src/gen "$TMPDIR/generated-before/proto"
            cp --recursive src/capability-language/generated "$TMPDIR/generated-before/capability"
            cp --recursive src/resource-lock/generated "$TMPDIR/generated-before/lock"
            export QUIXOS_PROTO_PATH="${pkgs.protobuf}/include:$PWD/proto''${QUIXOS_PROTO_PATH:+:$QUIXOS_PROTO_PATH}"
            patchShebangs node_modules/.bin node_modules/@bufbuild/protoc-gen-es/bin
            yarn build
            diff --recursive --unified "$TMPDIR/generated-before/proto" src/gen
            diff --recursive --unified "$TMPDIR/generated-before/capability" src/capability-language/generated
            diff --recursive --unified "$TMPDIR/generated-before/lock" src/resource-lock/generated
            esbuild dist/src/descriptor-check.js \
              --bundle --platform=node --target=node24 --format=esm \
              --outfile=quixos-descriptor-check.mjs
            esbuild dist/src/capability-language/cli.js \
              --bundle --platform=node --target=node24 --format=esm \
              --outfile=quixos-capability-compile.mjs
            esbuild dist/src/capability-language/workspace-cli.js \
              --bundle --platform=node --target=node24 --format=esm \
              --outfile=quixos-workspace-compile.mjs
            esbuild dist/src/capability-language/resource-cli.js \
              --bundle --platform=node --target=node24 --format=esm \
              --outfile=quixos-resource-compile.mjs
            esbuild dist/src/resource-lock/cli.js \
              --bundle --platform=node --target=node24 --format=esm \
              --outfile=quixos-lock-check.mjs
            esbuild dist/src/bindings/cli.js --bundle --platform=node --target=node24 --format=esm --outfile=quixos-codegen-ts.mjs
            esbuild dist/src/capability-language/tool-cli.js --bundle --platform=node --target=node24 --format=esm --outfile=quixos-qx.mjs
            runHook postBuild
          '';
          doCheck = true;
          checkPhase = ''
            runHook preCheck
            yarn test
            runHook postCheck
          '';
          installPhase = ''
            runHook preInstall
            mkdir -p "$out"
            install -Dm644 nix/checked-package.nix "$out/share/checked-package.nix"
            cp --reflink=auto --recursive grammar "$out/grammar"
            cp --reflink=auto --recursive proto "$out/proto"
            cp --reflink=auto --recursive dist "$out/dist"
            cp package.json "$out/package.json"
            mkdir -p "$out/bin"
            for tool in quixos-codegen-ts quixos-qx; do
              printf '#!/bin/sh\nexec ${pkgs.nodejs_24}/bin/node "%s/libexec/quixos-protocol/%s.mjs" "$@"\n' "$out" "$tool" > "$out/bin/$tool"
              chmod +x "$out/bin/$tool"
            done
            cat > "$out/bin/quixos-descriptor-check" <<EOF
#!/bin/sh
export PATH="${pkgs.protobuf}/bin:\$PATH"
export QUIXOS_PROTO_PATH="${pkgs.protobuf}/include:$out/proto\''${QUIXOS_PROTO_PATH:+:$QUIXOS_PROTO_PATH}"
exec ${pkgs.nodejs_24}/bin/node "$out/libexec/quixos-protocol/quixos-descriptor-check.mjs" "\$@"
EOF
            chmod +x "$out/bin/quixos-descriptor-check"
            cat > "$out/bin/quixos-capability-compile" <<EOF
#!/bin/sh
exec ${pkgs.nodejs_24}/bin/node "$out/libexec/quixos-protocol/quixos-capability-compile.mjs" "\$@"
EOF
            chmod +x "$out/bin/quixos-capability-compile"
            cat > "$out/bin/quixos-workspace-compile" <<EOF
#!/bin/sh
exec ${pkgs.nodejs_24}/bin/node "$out/libexec/quixos-protocol/quixos-workspace-compile.mjs" "\$@"
EOF
            chmod +x "$out/bin/quixos-workspace-compile"
            cat > "$out/bin/quixos-resource-compile" <<EOF
#!/bin/sh
exec ${pkgs.nodejs_24}/bin/node "$out/libexec/quixos-protocol/quixos-resource-compile.mjs" "\$@"
EOF
            chmod +x "$out/bin/quixos-resource-compile"
            cat > "$out/bin/quixos-lock-check" <<EOF
#!/bin/sh
exec ${pkgs.nodejs_24}/bin/node "$out/libexec/quixos-protocol/quixos-lock-check.mjs" "\$@"
EOF
            chmod +x "$out/bin/quixos-lock-check"
            mkdir -p "$out/libexec/quixos-protocol"
            install -m644 quixos-codegen-ts.mjs quixos-qx.mjs "$out/libexec/quixos-protocol/"
            install -m644 quixos-descriptor-check.mjs "$out/libexec/quixos-protocol/quixos-descriptor-check.mjs"
            install -m644 quixos-capability-compile.mjs "$out/libexec/quixos-protocol/quixos-capability-compile.mjs"
            install -m644 quixos-workspace-compile.mjs "$out/libexec/quixos-protocol/quixos-workspace-compile.mjs"
            install -m644 quixos-resource-compile.mjs "$out/libexec/quixos-protocol/quixos-resource-compile.mjs"
            install -m644 quixos-lock-check.mjs "$out/libexec/quixos-protocol/quixos-lock-check.mjs"
            runHook postInstall
          '';
          };
        };
      in {
        packages.default = quixos-protocol;
        packages.inspector = (pkgs.callPackage ./yarn-project.nix { inherit nodejs; }) {
          src = pkgs.lib.fileset.toSource {
            root = ./.;
            fileset = pkgs.lib.fileset.unions [ ./package.json ./yarn.lock ./.yarnrc.yml ./.yarn/plugins ./src ];
          };
          overrideAttrs = old: {
            nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ pkgs.esbuild ];
            doCheck = false;
            buildPhase = ''
              esbuild src/capability-language/inspect-cli.ts --bundle --platform=node --target=node24 --format=esm --outfile=inspect.mjs
            '';
            installPhase = ''
              mkdir -p "$out/bin" "$out/lib"
              cp inspect.mjs "$out/lib/inspect.mjs"
              printf '#!${pkgs.runtimeShell}\nexec ${nodejs}/bin/node --max-old-space-size=128 %s/lib/inspect.mjs\n' "$out" > "$out/bin/quixos-qx-inspect"
              chmod +x "$out/bin/quixos-qx-inspect"
            '';
          };
        };
        checks.default = quixos-protocol;
        devShells.default = pkgs.mkShell {
          packages = [
            nodejs
            pkgs.protobuf
            quixos-protocol.yarn-freestanding
            quixos-protocol
          ];
          shellHook = ''
            if [ -n "''${PS1-}" ]; then
              if [ -n "''${QX_DEV_SHELL_PROMPT-}" ]; then
                PS1="''${PS1#\[qx:''${QX_DEV_SHELL_PROMPT}\] }"
              fi
              export QX_DEV_SHELL_PROMPT="quixos-protocol"
              PS1="[qx:quixos-protocol] $PS1"
            fi
            export QUIXOS_PROTO_PATH="${pkgs.protobuf}/include:$PWD/proto''${QUIXOS_PROTO_PATH:+:$QUIXOS_PROTO_PATH}"
          '';
        };
      });
}