You will get warnings in recent Elixir versions because the app is missing.
It may fail if you assemble a release and no other app depends on crypto. On Tue, Sep 21, 2021 at 18:02 Kenny Evitt <kenny.ev...@gmail.com> wrote: > Thanks! > > Does the example code for that module in the guide work _without_ adding > the module to `:extra_applications` because I'm running it on my 'dev' > computer? In the test project I used, there are NO (explicit) Mix deps, so > I don't _think_ `crypto` could be being pulled in via some other dependency. > > On Tuesday, September 21, 2021 at 11:39:25 AM UTC-4 José Valim wrote: > >> The wording here is definitely confusing. Erlang is a collection of >> applications and crypto is one of them. You need to include all of Erlang >> applications, outside of "kernel" and "stdlib" apps, in extra_applications. >> I will clarify the guides. Thanks! >> >> >> On Tue, Sep 21, 2021 at 5:33 PM Kenny Evitt <kenny...@gmail.com> wrote: >> >>> On the Erlang libraries page of the current guide, for the `crypto` >>> module >>> <https://elixir-lang.org/getting-started/erlang-libraries.html#the-crypto-module> >>> : >>> >>> > The `:crypto` module is not part of the Erlang standard library, but >>> is included with the Erlang distribution. This means you must list >>> `:crypto` in your project’s applications list whenever you use it. To do >>> this, edit your `mix.exs` file to include: >>> > >>> > ``` >>> > def application do >>> > [extra_applications: [:crypto]] >>> > end >>> > ``` >>> >>> But in a reply on a recent Elixir Forum post >>> <https://elixirforum.com/t/help-with-reading-typespecs-for-erlang-crypto-module/42423/7>, >>> someone claimed: >>> >>> > `:crypto` is a part of and is distributed with Erlang/OTP ... >>> >>> And that doesn't seem to contradict what's in the Getting Started guide. >>> >>> But I'm confused as to why that module should be added to the >>> `:extra_applications` key. I just tried running the example code from the >>> guide in a 'scratchpad' project that has NO (explicit) Mix deps, and only >>> `:logger` listed in `:extra_applications` and the code worked fine in >>> `iex`. Does that code work because I'm running it on my 'dev' computer? >>> Would NOT adding `:crypto` to `:extra_applications` present a problem were >>> I to deploy that project's code to another computer? >>> >>> Or is `crypto` now (somehow) part of "the Erlang standard library"? >>> >>> I'm just curious! But, if the guide is now incorrect about this, I'd be >>> happy to submit a PR with any suitable changes. >>> >> -- >>> You received this message because you are subscribed to the Google >>> Groups "elixir-lang-core" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to elixir-lang-co...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/elixir-lang-core/58f100bd-b79c-4893-8f1f-ec8aea26d81dn%40googlegroups.com >>> <https://groups.google.com/d/msgid/elixir-lang-core/58f100bd-b79c-4893-8f1f-ec8aea26d81dn%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- > You received this message because you are subscribed to the Google Groups > "elixir-lang-core" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to elixir-lang-core+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elixir-lang-core/de5e8144-d3ff-4805-a903-4d2b084ebbfan%40googlegroups.com > <https://groups.google.com/d/msgid/elixir-lang-core/de5e8144-d3ff-4805-a903-4d2b084ebbfan%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "elixir-lang-core" group. To unsubscribe from this group and stop receiving emails from it, send an email to elixir-lang-core+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/elixir-lang-core/CAGnRm4JOeRkj3%3DPMekP5kod98zNrDdvmzdEsHiJnrQ3F9UPhHA%40mail.gmail.com.
