if all files has build constraints will cause "Error determining list of magefiles"

[yinheli]

After upgrade to go1.13, some of my projects build failed, with message

Error determining list of magefiles: failed to list non-mage gofiles: exit status 1
exit status 1

And clone mage repository, check out master branch, run go test -race ./... failed too.

go list files cause error if all files has build constraints. For example, cd mage/testdata/no_default, then run go list -f '{{join .GoFiles "||"}}', error occurs with message

build .: cannot find module for path .

[robinkb]

I'm facing the same issue. To work around this bug until a patch is a released, create an empty Go file in the working directory:

$ touch dummy.go

Mage will compile just fine.

[gbrlsnchs]

@yinheli Does this fail if magefile.go is in the root alongside other Go files?

[zeevallin]

I've got the same issue as you.

[natefinch]

Ahh, yeah, I think they maybe changed go list so that it returns an error now if there are no files..... which is super annoying.