make vbuffalo opt-in for now

[markbates]

No description provided.

[stanislas-m]

How about a conditional assign here? This way, we provide a default, but the user can override the TAGS.

[markbates]

@stanislas-m you're stretching my Makefile skills here. :)

[stanislas-m]

From https://ftp.gnu.org/old-gnu/Manuals/make-3.79.1/html_chapter/make_6.html:

There is another assignment operator for variables, `?='. This is called a conditional variable assignment operator, because it only has an effect if the variable is not yet defined. This statement:

FOO ?= bar

is exactly equivalent to this (see section The origin Function):

ifeq ($(origin FOO), undefined)
  FOO = bar
endif

Note that a variable set to an empty value is still defined, so `?=' will not set that variable. 

[stanislas-m]

@markbates Did you put the GOPATH in the PATH? I think that's why packr is not found in the last builds.

[codecov]

Codecov Report

Merging #1096 into development will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           development    #1096   +/-   ##
============================================
  Coverage        60.76%   60.76%           
============================================
  Files               56       56           
  Lines             2867     2867           
============================================
  Hits              1742     1742           
  Misses            1022     1022           
  Partials           103      103

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