basic example on windows messes up import path in generated file

[SunnysideAaron]

I'm on windows. Working through the basic examples readme. There appears to be a problem with generating paths in the code on windows.

$Env:GOPATH

returns

C:\Users\fuzzy\go

I run the following commands

cd c:\Working\goexamples
gonew goa.design/examples/basic@latest
cd basic
goa gen goa.design/examples/basic/design -o $GOPATH/src/goa.design/examples/basic

I am then getting the following error

exit status 1
C:\src\goa.design\examples\basic\gen\calc\service.go:15:16: unknown escape sequence
C:\src\goa.design\examples\basic\gen\calc\service.go:15:20: unknown escape sequence
C:\src\goa.design\examples\basic\gen\calc\service.go:15:31: unknown escape sequence
C:\src\goa.design\examples\basic\gen\calc\service.go:15:46: unknown escape sequence

========
Content:
// Code generated by goa v3.19.1, DO NOT EDIT.
//
// calc service
//
// Command:
// $ goa gen goa.design/examples/basic/design -o /src/goa.design/examples/basic

package calc

import (
        "context"
        "io"
        goa "goa.design/goa/v3/pkg"
        "goa.design/goa/v3/security"
        calcviews "C:\src\goa.design\examples\basic\gen/calc/views"
)


// The calc service performs operations on numbers
type Service interface {
        // Multiply implements multiply.
                Multiply(context.Context, *MultiplyPayload) (res int, err error)
}

// APIName is the name of the API as defined in the design.
const APIName = "calc"

// APIVersion is the version of the API as defined in the design.
const APIVersion = "0.0.1"

// ServiceName is the name of the service as defined in the design. This is the
// same value that is set in the endpoint request contexts under the ServiceKey
// key.
const ServiceName = "calc"

// MethodNames lists the service method names as defined in the design. These
// are the same values that are set in the endpoint request contexts under the
// MethodKey key.
var MethodNames = [1]string{ "multiply",  }
// MultiplyPayload is the payload type of the calc service multiply method.
type MultiplyPayload struct {
        // Left operand
        A int
        // Right operand
        B int
}

Notice the last line of the import()

calcviews "C:\src\goa.design\examples\basic\gen/calc/views"

notice the slashes are mixed \ and / also c:\ is not my gopath

[SunnysideAaron]

I'm guessing most everyone is running goa on some linux docker image. Which I will be as well but didn't start there for learning. It's probably just something along the way not handling paths correctly.

[raphael]

Thank you for reporting the issue! While most people probably use Goa on Linux/Mac it also ought to work natively on Windows (the tests are run on Windows for every PR). I wonder if the issue is the argument given via -o This argument should be a file path - not a Go import path. So on Windows it should be:

goa gen goa.design/examples/basic/design -o c:\src\goa.desig\examples\basic

Do you still get the error with the above command line? Goa relies on the standard Go library golang.org/x/tools/go/packages to compute the Package path for the generated import.