macOS app not built for older macOS versions

[probablykasper]

Describe the bug

Building on a macos-latest GitHub action results in the app not working on macOS 10.15 Catalina, even with "minimumSystemVersion": "10":

You have macOS 10.15.7. The application requires macOS 11.0 or later.

Possibly related:

• [MacOs] Tauri app crashes on MacOs v10.12.6: Library missing: image not found #2617

To Reproduce

This is the action I've used to build: https://github.com/probablykasper/mr-tagger/blob/444d69728071b7b1d55b3368fac759ef002f50b6/.github/workflows/publish.yml

Platform and Versions:

Details

Operating System - Mac OS, version 10.15.7 X64

Node.js environment
  Node.js - 14.16.0
  @tauri-apps/cli - 1.0.0-beta.10
  @tauri-apps/api - 1.0.0-beta.8

Global packages
  npm - 6.14.11
  yarn - 1.22.10

Rust environment
  rustc - 1.54.0
  cargo - 1.54.0

App directory structure
/node_modules
/src-tauri
/build
/.git
/src

App
  tauri.rs - 1.0.0-beta.8
  build-type - bundle
  CSP - default-src blob: data: filesystem: ws: wss: http: https: tauri: 'unsafe-eval' 'unsafe-inline' 'self' img-src: 'self'
  distDir - ../build
  devPath - http://localhost:5000
  framework - Svelte

[nothingismagick]

Someone once reported this:

It's not enough to set the minimumSystemVersion variable in the tauri.conf.json file. You have to create a cargo variable in the build.rs script. You can do it to simply add this line to the main function.

println!("cargo:rustc-env=MACOSX_DEPLOYMENT_TARGET=10.15");

It feels like there should be a more elegant way to do this though.

[probablykasper]

Tried it for this one with MACOSX_DEPLOYMENT_TARGET=10.9 , and it does work on 10.15!

Maybe Tauri should set MACOSX_DEPLOYMENT_TARGET in build.rs by default?

On 10.9, it just closes immediately without any error message. Running MinVerTest.app/Contents/MacOS/MinVerTest gives this output:

thread 'main' panicked at 'Class with name WKWebViewConfiguration could not be found', /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/wry-0.12.2/src/webview/wkwebview/mod.rs:199:34
note: run with 'RUST_BACKTRACE=1' environment variable to display a backtrace

Found out WKWebView is available in 10.10+, so that makes sense, but maybe there could be an error message somehow? And if Tauri only works macOS 10.10+ (?), then that should probably be documented.

[lucasfernog]

If it only works on 10.10+ we should automatically set the flag. Do you guys agree @nothingismagick @wusyong @lemarier

[nothingismagick]

We should see if this has any side effects before just setting the flag.

[probablykasper]

Tried running on 10.10:

2021-10-12 21:27:10.256 MinVerTest[490:7817] -[WKWebViewConfiguration setURLSchemeHandler:forURLScheme:]: unrecognized selector sent to instance 0x7fc273452bf0 fatal runtime error: Rust cannot catch foreign exceptions Abort trap: 6

Assuming the issue is that setURLSchemeHandler is available for 10.13+ (URL scheme handling seems to still be possible before 10.13, but not using that method). This app doesn't register any URL schemes at all though.

[probablykasper]

Seems to run fine on 10.13

[yakuv0]

out of curiosity since being unable to deploy the webview and display the app yet, does packaging on 10.10.5 has the issue of URL schemes mentioned earlier on this ticket?

[probablykasper]

@yakuv0 The issue is Tauri is using a macOS API that's only available for 10.13+, so I'm guessing it would either fail to build or just cause the same issue to happen

[yakuv0]

@probablykasper it created an app and dmg , app launch on (mac osx mojave 10.14.6) and crashes on run (mac osx yosemite 10.10.5):

 Compiling app v0.1.0 (/path/to/project/src-tauri)
 Finished dev [unoptimized + debuginfo] target(s) in 3.44s
  Running `target/debug/app`
2021-10-25 14:53:39.594 app[2272:73970] -[WKWebViewConfiguration setURLSchemeHandler:forURLScheme:]: unrecognized selector sent to instance 0x7fdaa3e49be0
fatal runtime error: Rust cannot catch foreign exceptions

build still get error on bundling project as i found a dmg file in /path/to/project/src-tauri/target/release/bundle/macos/rw.project_0.1.0_x64.dmg

build error: 
   Compiling tauri v1.0.0-beta.8
    Finished release [optimized] target(s) in 1m 34s
    Bundling project.app
    Bundling "/path/to/project/src-tauri/target/release/bundle/dmg/project_0.1.0_x64.dmg"
info: running bundle_dmg.sh
Error: failed to bundle project

Caused by:
    Shell Scripting Error:`error running bundle_dmg.sh, try running with --verbose to see command output`

 app:spawn Command "/path/to/project/node_modules/@tauri-apps/cli/bin/tauri-cli" failed with exit code: 1 +0ms

[probablykasper]

@yakuv0 Yep, so the same issue. btw, putting your logs in code blocks would be nice

[probablykasper]

In case anyone stumbles upon this, Tauri should work on 10.13+ if you have a build.rs file like this:

fn main() {
  println!("cargo:rustc-env=MACOSX_DEPLOYMENT_TARGET=10.13");
  tauri_build::build();
}

I also have the tauri.bundle.macOS.minimumSystemVersion property in tauri.conf.json set to "10.13".