Build problem: cannot find package ... in any of ... (from $GOROOT) ... (from $GOPATH)

[ar-jan]

I'm trying to bump Keybase version packaged for Void Linux since it's broken due to the certificate problem.

I run into problems with various packages that can't be found:

cannot find package "github.com/btcsuite/btcutil/bech32" in any of:
/usr/lib/go/src/github.com/btcsuite/btcutil/bech32 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/btcsuite/btcutil/bech32 (from $GOPATH)
...
cannot find package "github.com/stellar/go/build" in any of:
/usr/lib/go/src/github.com/stellar/go/build (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/stellar/go/build (from $GOPATH)
github.com/asaskevich/govalidator (download)
github.com/manucorporat/sse (download)
github.com/segmentio/go-loggly (download)
github.com/BurntSushi/toml (download)
cannot find package "github.com/stellar/go/clients/horizon" in any of:
/usr/lib/go/src/github.com/stellar/go/clients/horizon (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/stellar/go/clients/horizon (from $GOPATH)
...
github.com/blevesearch/vellum (download)
github.com/blevesearch/zapx (download)
cannot find package "github.com/blevesearch/zapx/v11" in any of:
/usr/lib/go/src/github.com/blevesearch/zapx/v11 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/zapx/v11 (from $GOPATH)
cannot find package "github.com/blevesearch/zapx/v12" in any of:
/usr/lib/go/src/github.com/blevesearch/zapx/v12 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/zapx/v12 (from $GOPATH)
cannot find package "github.com/blevesearch/zapx/v13" in any of:
/usr/lib/go/src/github.com/blevesearch/zapx/v13 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/zapx/v13 (from $GOPATH)
cannot find package "github.com/blevesearch/zapx/v14" in any of:
/usr/lib/go/src/github.com/blevesearch/zapx/v14 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/zapx/v14 (from $GOPATH)
cannot find package "github.com/blevesearch/zapx/v15" in any of:
/usr/lib/go/src/github.com/blevesearch/zapx/v15 (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/zapx/v15 (from $GOPATH)
...
cannot find package "github.com/blevesearch/bleve/index/store" in any of:
/usr/lib/go/src/github.com/blevesearch/bleve/index/store (from $GOROOT)
/builddir/keybase-6.2.4/src/github.com/blevesearch/bleve/index/store (from $GOPATH)

Seems it may have something to do with having to use go modules? I don't know anything about packaging Go, any pointers?