Issue getting package "sspi/kerberos" #11
Description
When trying to get the sspi/kerberos package, it complains about "build constraints exclude all Go files in"
| => go get github.com/alexbrainman/sspi
go: downloading github.com/alexbrainman/sspi v0.0.0-20210105120005-909beea2cc74
go get: added github.com/alexbrainman/sspi v0.0.0-20210105120005-909beea2cc74
| ~/sandbox/gohome/tcp @ Michaels-iMac (mdaloia)
| => go get github.com/alexbrainman/sspi/kerberos
package github.com/alexbrainman/sspi/kerberos: build constraints exclude all Go files in /Users/mdaloia/go/pkg/mod/github.com/alexbrainman/sspi@v0.0.0-20210105120005-909beea2cc74/kerberos
| ~/sandbox/gohome/tcp @ Michaels-iMac (mdaloia)
| => go version
go version go1.17.6 darwin/amd64
| ~/sandbox/gohome/tcp @ Michaels-iMac (mdaloia)
| => go env
GO111MODULE=""
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/mdaloia/Library/Caches/go-build"
GOENV="/Users/mdaloia/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/mdaloia/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/mdaloia/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.17.6"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/Users/mdaloia/sandbox/gohome/tcp/go.mod"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/t5/96f3gstn4hb46287jnpfplmc0000gn/T/go-build2082939745=/tmp/go-build -gno-record-gcc-switches -fno-common"
| ~/sandbox/gohome/tcp @ Michaels-iMac (mdaloia)