[Flutter Linux]: Bundling for Snap Store not working

[matthiasn]

Bundling the Linux app as a Snap file and eventually publishing to the Snap Store would offer a far better user experience than publishing a tar file on GitHub Releases. However, I'm running into issues with CMake being too old. When bundling a Snap file, apparently the Flutter installation from the Flutter Snap is used, and that comes with an ancient version.

Also see:

• Unable to run on linux objectbox/objectbox-dart#317
• snapcraft fails with CMake Error canonical/flutter-snap#47
• Snap uses an old version of CMake canonical/flutter-snap#53
• The Linux toolchain CMake build dependency (CMake 3.14 or higher is required. You are running version 3.10.2) flutter/flutter#101788
• How to upgrade cmake version in Linux Toolchain. flutter/flutter#100183
• https://snapcraft.io/docs/snapcraft-yaml-reference

[matthiasn]

canonical/flutter-snap#61 looks promising

[matthiasn]

This looks like it could help: https://github.com/krille-chan/fluffychat-snap/pull/1/files

[matthiasn]

@lucyllewy I just found https://github.com/lucyllewy/macOS-Linux-VM-with-Rosetta and wow, that's awesome, thank you so much, that looks really promising! However, I was struggling with getting the latest released Flutter version running via snap, and also ran into issues running manually installed Flutter. So while I did try to run with your fix in krille-chan/fluffychat-snap#1, I'm still struggling 🙂

[afl-dev]

Still not working:
snapcraft --use-lxd --bind-ssh

(if build from flutter git version its ok)

[+15 ms] executing: [build/linux/x64/release/] cmake -G Ninja
-DCMAKE_BUILD_TYPE=Release -DFLUTTER_TARGET_PLATFORM=linux-x64
/root/parts/myapp/build/linux
[ +777 ms] CMake Error: The current CMakeCache.txt directory
/root/parts/myapp/build/build/linux/x64/release/CMakeCache.txt is different
than the directory /home/vboxuser/projects/sd/build/linux/x64/release where
CMakeCache.txt was created. This may result in binaries being created in the
wrong place. If you are not sure, reedit the CMakeCache.txt
[ +9 ms] CMake Error: The source
"/root/parts/myapp/build/linux/CMakeLists.txt" does not match the source
"/home/vboxuser/projects/sd/linux/CMakeLists.txt" used to generate cache.
Re-run cmake with a different source directory.
[ +167 ms] Building Linux application... (completed in 958ms)
[ ] "flutter linux" took 3,316ms.
[ +5 ms] Unable to generate build files
[ +1 ms]
0 throwToolExit
(package:flutter_tools/src/base/common.dart:10:3)
1 _runCmake
(package:flutter_tools/src/linux/build_linux.dart:151:5)

2 buildLinux
(package:flutter_tools/src/linux/build_linux.dart:73:5)

3 BuildLinuxCommand.runCommand
(package:flutter_tools/src/commands/build_linux.dart:86:5)

4 FlutterCommand.run.
(package:flutter_tools/src/runner/flutter_command.dart:1297:27)

5 AppContext.run.
(package:flutter_tools/src/base/context.dart:150:19)

6 CommandRunner.runCommand
(package:args/command_runner.dart:212:13)

7 FlutterCommandRunner.runCommand.
(package:flutter_tools/src/runner/flutter_command_runner.dart:339:9)

8 AppContext.run.
(package:flutter_tools/src/base/context.dart:150:19)

9 FlutterCommandRunner.runCommand
(package:flutter_tools/src/runner/flutter_command_runner.dart:285:5)

10 run..
(package:flutter_tools/runner.dart:115:9)

11 AppContext.run.
(package:flutter_tools/src/base/context.dart:150:19)

12 main (package:flutter_tools/executable.dart:90:3)

snapcraft 7.5.2
cmake version 3.27.4

(snap download Flutter 3.13.2 • channel stable • https://github.com/flutter/flutter.git
Framework • revision ff5b5b5fa6 (8 days ago) • 2023-08-24 08:12:28 -0500
Engine • revision b20183e040)
Tools • Dart 3.1.0 • DevTools 2.25.0

Ubuntu 22.04.3 LTS (vbox)