# Packaging dart/flutter for GNU Guix **URL:** \ **Category:** Guix\ **Tags:** guix\ **Created:** [April 19, 2024, 12:26pm UTC](https://forum.systemcrafters.net/t/packaging-dart-flutter-for-gnu-guix/606 "2024-04-19T12:26:31Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![apoorv569](https://avatars.discourse-cdn.com/v4/letter/a/958977/32.png) [@apoorv569](https://forum.systemcrafters.net/u/apoorv569)\ **Post date:** [April 19, 2024, 12:26pm UTC](https://forum.systemcrafters.net/t/packaging-dart-flutter-for-gnu-guix/606/1 "2024-04-19T12:26:31Z")
Recently I have been wanting to learn the `flutter` toolkit, so I decided to write package definitions for `dart` and `flutter`. But I soon learned that its a bit more complex than I thought. Here is what I have so far, ```auto (define-module (nebula packages dart) #:use-module (gnu packages) #:use-module (gnu packages base) #:use-module (gnu packages compression) #:use-module (gnu packages curl) #:use-module (gnu packages elf) #:use-module (guix git-download) #:use-module (guix packages) #:use-module (guix build utils) #:use-module (guix build-system python) #:use-module (guix utils) #:use-module ((guix licenses) #:prefix license:)) (define chromium-depot-tools (origin (method git-fetch) (uri (git-reference (url "https://chromium.googlesource.com/chromium/tools/depot_tools") (commit "1a61eb625d4b062bb2d6f0902b4979b48def4d33"))) (sha256 (base32 "1v38mla41dwy00plhxam8z3xk04m3pj5lsjynq9kzhqhmk6airyz")))) (define-public dart (let ((commit "de84385653631c6283b02f09fb1944f8d8dd3b17") (revision "0")) (package (name "dart") (version "3.3.4") (source (origin (method git-fetch) (uri (git-reference (url "https://github.com/dart-lang/sdk.git") (commit commit))) (file-name (git-file-name name version)) (sha256 (base32 "1v38mla41dwy00plhxam8z3xk04m3pj5lsjynq9kzhqhmk6airyz")))) (build-system python-build-system) (arguments (list #:phases #~(modify-phases %standard-phases (add-after 'unpack 'add-depot-tools-to-path (lambda _ (let* ((depot-tools-path #$chromium-depot-tools)) (setenv "PATH" (string-append (getenv "PATH") ":" depot-tools-path))))) (replace 'build (lambda _ (system* "./tools/build.py" "--mode" "release" "--arch" "x64" "create_sdk"))) (add-after 'install 'patchelf (lambda* (#:key outputs inputs #:allow-other-keys) (let* ((out (assoc-ref outputs "out"))) (system* "find" (string-append out "/bin") "-executable" "-type" "f" "-exec" "patchelf" "--set-interpreter" (string-append #$glibc "/lib/ld-linux.so.2") "{}") )))))) (inputs (list curl)) (native-inputs (list patchelf ;; xz unzip)) (home-page "https://dart.dev") (synopsis "The Dart SDK, including the VM, dart2js, core libraries, and more") (description "Dart is a scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.") (license license:bsd-3)))) ``` (Yes I am aware the `hash` for the `chromium-depot-tools` is wrong) I was following this guide BTW, [Building · dart-lang/sdk Wiki · GitHub](https://github.com/dart-lang/sdk/wiki/Building), and also the `nix` package definition. Currently I get this error, ```auto /home/apoorv/repos/nebula/nebula/packages/dart.scm:62:15: warning: source expression failed to match any pattern guix build: error: dart: unknown package ``` In any case, I don’t think I’m even close to making this work. I also found that someone was trying to package `dart` for `Guix` [https://issues.guix.gnu.org/44926](https://issues.guix.gnu.org/44926), but there is no more activity there. In case anyone is interested, here is the `nix` package definition for dart, ```auto { stdenv , lib , fetchurl , unzip , runCommand , darwin , sources ? import ./sources.nix {inherit fetchurl;} , version ? sources.versionUsed }: assert sources != null && (builtins.isAttrs sources); stdenv.mkDerivation (finalAttrs: { pname = "dart"; inherit version; nativeBuildInputs = [unzip]; src = sources."${version}-${stdenv.hostPlatform.system}" or (throw "unsupported version/system: ${version}/${stdenv.hostPlatform.system}"); installPhase = '' mkdir -p $out cp -R * $out/ echo $libPath '' + lib.optionalString (stdenv.isLinux) '' find $out/bin -executable -type f -exec patchelf --set-interpreter $(cat $NIX_CC/nix-support/dynamic-linker) {} \; ''; libPath = lib.makeLibraryPath [stdenv.cc.cc]; dontStrip = true; passthru = { updateScript = ./update.sh; tests = { testCreate = runCommand "dart-test-create" { nativeBuildInputs = [finalAttrs.finalPackage]; } '' PROJECTNAME="dart_test_project" dart create --no-pub $PROJECTNAME [[-d $PROJECTNAME]] [[-f $PROJECTNAME/bin/$PROJECTNAME.dart]] touch $out ''; testCompile = runCommand "dart-test-compile" { nativeBuildInputs = [finalAttrs.finalPackage] ++ lib.optionals stdenv.isDarwin [darwin.cctools darwin.sigtool]; } '' HELLO_MESSAGE="Hello, world!" echo "void main() => print('$HELLO_MESSAGE');" > hello.dart dart compile exe hello.dart PROGRAM_OUT=$(./hello.exe) [["$PROGRAM_OUT" == "$HELLO_MESSAGE"]] touch $out ''; }; }; meta = with lib; { homepage = "https://dart.dev"; maintainers = with maintainers; [grburst]; description = "Scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps"; longDescription = '' Dart is a class-based, single inheritance, object-oriented language with C-style syntax. It offers compilation to JavaScript, interfaces, mixins, abstract classes, reified generics, and optional typing. ''; platforms = ["x86_64-linux" "i686-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"]; sourceProvenance = with sourceTypes; [binaryNativeCode]; license = licenses.bsd3; }; }) ``` ---
**Author:** ![ryuslash](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.systemcrafters.net/ryuslash/32/66_2.png) [@ryuslash](https://forum.systemcrafters.net/u/ryuslash)\ **Post date:** [April 22, 2024, 7:13pm UTC](https://forum.systemcrafters.net/t/packaging-dart-flutter-for-gnu-guix/606/2 "2024-04-22T19:13:46Z")
> [@apoorv569](#): > > Currently I get this error, > > ```auto > /home/apoorv/repos/nebula/nebula/packages/dart.scm:62:15: warning: source expression failed to match any pattern > guix build: error: dart: unknown package > > ``` This particular error seems to go away if `#use-module (guix gexp)` is added to the module definition. I haven’t tried building it, so I don’t know if anything else will show up (aside from the wrong hash). ---
**Author:** ![apoorv569](https://avatars.discourse-cdn.com/v4/letter/a/958977/32.png) [@apoorv569](https://forum.systemcrafters.net/u/apoorv569)\ **Post date:** [May 1, 2024, 8:05am UTC](https://forum.systemcrafters.net/t/packaging-dart-flutter-for-gnu-guix/606/3 "2024-05-01T08:05:16Z")
> This particular error seems to go away if `#use-module (guix gexp)` is added to the module definition. Yup I was missing this. But I don’t think I am even remotely close to building it. Apparently I might also have to package `Android Studio` which I think will require a `fhs` container, of which I have no idea how to package. For now I am using `Android Studio` installed via `Nix` package manager with a locally installed `flutter` `sdk` under `~/.local/share/flutter`. It works, but I wanted to use `emacs`, as I’m so used to it, the keybinds and all. The issue with `Emacs` ATM is that it couldn’t read the `flutter` and `dart` `bin/scripts` I just get this error when I run `dart` `binary` from `shell`, ```auto  dart /home/apoorv/.local/share/flutter/bin/internal/shared.sh: line 263: /home/apoorv/.local/share/flutter/bin/cache/dart-sdk/bin/dart: No such file or directory ``` same with `flutter` binary. I’m guessing these also require a `fhs` container. I actually tried running it inside `guix shell` `fhs` container, ```auto guix shell --container --network --emulate-fhs --preserve=^PATH --preserve=^ANDROID_HOME --verbosity=3 coreutils bash git which inetutils nss-certs pkg-config cmake ``` But I still couldn’t make it work with `emacs` so…