Binary-only packages and DH_GOPKG

[Tong Sun <suntong001@gmail.com>]

Does Binary-only package still need to set the DH_GOPKG variable?

>From https://go-team.pages.debian.net/packaging.html, it says:

- - - - - - - -
dh-golang comes with an example debian/rules file:
https://salsa.debian.org/go-team/packages/dh-golang/blob/master/example/rules

You will need to change the value of DH_GOPKG to correspond to your
program’s upstream package name.
- - - - - - - -

Is such "changing the value of DH_GOPKG" step still necessary?

Comparing to https://salsa.debian.org/go-team/packages/dh-golang/blob/master/example/rules
my rule file at
https://salsa.debian.org/go-team/packages/ffcvt/blob/master/debian/rules
doesn't have the DH_GOPKG variable but it still builds OK.

Hence the question.

My whole build log is at:
http://paste.debian.net/1056050/

Thx.