macOS: Support selecting dotnet architecture or path for launch configuration

[cwensley]

Issue Description

With the advent of .NET 6 RC2 on Apple Silicon (or Windows ARM64), it now installs the arm64 version in /usr/local/share/dotnet, and the x64 version in /usr/local/share/dotnet/x64. It was announced here.

The problem is that the arm64 build is unable to debug an x64 app and vice versa. The only way to support debugging an x64 app is to set the dotnet path globally to use the x64 version.

The launch configuration should be able to specify which dotnet to use when debugging, depending on the app you are launching.

The guidance above says to set the path to switch between them, but adding this to the launch config does not seem to work:

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch My x64 App",
            "type": "coreclr",
            "request": "launch",
            "program": "/Path/ToMyApp",
            "environment": [
                { "name": "PATH", "value": "/usr/local/share/dotnet/x64:${env:PATH}" }
            ]
        },

Steps to Reproduce

Launch an x64 app for debugging on an Apple Silicon Mac.

Expected Behavior

Should debug properly.

Actual Behavior

Unable to attach to CoreCLR. Unknown Error: 0x80131c3c

Logs

OmniSharp log

Post the output from Output-->OmniSharp log here

C# log

Post the output from Output-->C# here

Environment information

VSCode version: 1.61.2
C# Extension: 1.23.16

Mono Information

OmniSharp using built-in mono

Dotnet Information

.NET SDK (reflecting any global.json): Version: 6.0.100-rc.2.21505.57 Commit: ab39070116

Runtime Environment:
OS Name: Mac OS X
OS Version: 11.6
OS Platform: Darwin
RID: osx.11.0-arm64
Base Path: /usr/local/share/dotnet/sdk/6.0.100-rc.2.21505.57/

Host (useful for support):
Version: 6.0.0-rc.2.21480.5
Commit: 6b11d64e7e

.NET SDKs installed:
6.0.100-rc.2.21505.57 [/usr/local/share/dotnet/sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 6.0.0-rc.2.21480.10 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 6.0.0-rc.2.21480.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET runtimes or SDKs:
https://aka.ms/dotnet-download

Visual Studio Code Extensions

Extension	Author	Version
binary-plist	dnicolson	0.7.0
cpptools	ms-vscode	1.7.1
csharp	ms-dotnettools	1.23.16
csharpextensions	jchannon	1.3.1
csharpextensions	kreativ-software	1.5.2
docomment	k--kato	0.1.20
dotnet	leo-labs	1.3.0
dotnet-test-explorer	formulahendry	0.7.7
EditorConfig	EditorConfig	0.16.4
eml	leighlondon	0.4.0
gitlens	eamodio	11.6.1
jupyter-renderers	ms-toolsai	1.0.3
lunatic-file-picker	DmitriyMuraviov	0.1.2
macros	geddski	1.2.1
mono-debug	ms-vscode	0.16.2
msbuild-project-tools	tintoy	0.3.15
openvpn	idleberg	0.2.3
powershell	ms-vscode	2021.10.1
propertylist	zhouronghui	0.0.2
python	ms-python	2021.10.1365161279
rhino-debug	mcneel	0.3.0
shader	slevesque	1.1.5
syntax-project-pbxproj	mariomatheu	0.1.3
t4-support	zbecknell	0.5.0
tasks-shell-input	augustocdias	1.6.0
test-adapter-converter	ms-vscode	0.1.4
vscode-clangd	llvm-vs-code-extensions	0.1.13
vscode-commons	redhat	0.0.6
vscode-dotnet-runtime	ms-dotnettools	1.3.0
vscode-eslint	dbaeumer	2.2.2
vscode-nuget-package-manager	jmrog	1.1.6
vscode-open-in-github	fabiospampinato	1.3.0
vscode-pylance	ms-python	2021.10.3
vscode-solution-explorer	fernandoescolar	0.4.4
vscode-yaml	redhat	1.1.0
xml	DotJoshJohnson	2.5.1

[gregg-miskelly]

@cwensley You need to add "targetArchitecture": "x86_64" to your launch.json configuration.

[cwensley]

🤦🏻‍♂️ whoops, I missed that setting! Thanks for the response, it looks like it works perfectly.