armv7 targeting via poudriere-devel: devel/elixir-timex for 3 examples of "could not find an app file . . ."

Note: This was using an armv7 poudriere jail on a aarch64 machine able to
run armv7 code.

elixir-timex-3.3.0.log reports:

=======================<phase: build          >============================
===== env: NO_DEPENDS=yes USER=root UID=0 GID=0
===>  Building for elixir-timex-3.3.0
warning: use Mix.Config is deprecated. Use the Config module instead
  config/config.exs:1

warning: use Mix.Config is deprecated. Use the Config module instead
  config/prod.exs:1

Unchecked dependencies for environment prod:
* gettext (/usr/local/lib/elixir/lib/gettext)
  could not find an app file at "_build/prod/lib/gettext/ebin/gettext.app". This may happen if the dependency was not yet compiled or the dependency indeed has no app file (then you can pass app: false as option)
* tzdata (/usr/local/lib/elixir/lib/tzdata)
  could not find an app file at "_build/prod/lib/tzdata/ebin/tzdata.app". This may happen if the dependency was not yet compiled or the dependency indeed has no app file (then you can pass app: false as option)
* combine (/usr/local/lib/elixir/lib/combine)
  could not find an app file at "_build/prod/lib/combine/ebin/combine.app". This may happen if the dependency was not yet compiled or the dependency indeed has no app file (then you can pass app: false as option)
** (Mix) Can't continue due to errors on dependencies
*** Error code 1

===
Mark Millard
marklmi at yahoo.com