cmd/ebitnmobile: ebitenmobile fails on go1.23 if you have GOEXPERIMENT=loopvar set

[corfe83]

Ebitengine Version

2.8.1

Operating System

• Windows
• macOS
• Linux
• FreeBSD
• OpenBSD
• Android
• iOS
• Nintendo Switch
• PlayStation 5
• Xbox
• Web Browsers

Go Version (go version)

1.23.2

What steps will reproduce the problem?

Run ebitenmobile bind with conventional commandline arguments such as:

ebitenmobile bind -target android -javapkg your.package.name -o path/to/yourgame.aar .

What is the expected result?

Bind is successful

What happens instead?

Bind gives error:

2024/10/12 22:55:53 go [mod tidy] failed: go: errors parsing go.mod:
go.mod:5: toolchain directive expects exactly one argument

Anything else you feel useful to add?

No response

[hajimehoshi]

IIUC, specifying GOEXPERIMENT=loopvar with Go 1.23 doesn't make sense as Go 1.23 already applies the loopvar change, but anyway this is a bug.