"build constraints exclude all Go files in" when trying to import golang.org/x/sys/unix

[aadarshpratik1]

What exactly did you do? Did you specify GOOS=js and GOARCH=wasm?

Originally posted by @neelance in #26598 (comment)

I saw this answer in an old issue but did not understand why this needs to be done

[AlexRouSg]

Please fill in the entire issue template you see when creating a new issue. What exactly are you trying to do? And what exactly is your build environment? (Output from the command go env)

Setting GOOS and/or GOARCH means you are cross compiling. golang.org/x/sys/unix as the name suggest, is a unix package and thus is only for Linux/OSX and other unix based operating systems. Your issue title suggest you are on windows, in which case you cannot use this package.

[agnivade]

If you do not specify GOOS and GOARCH, the build constraints won't pick up the right files for that target. Please see https://golang.org/pkg/go/build/#hdr-Build_Constraints.

For further questions, please feel free to take a look at the Questions wiki page; it has a list of good places for asking questions.