Elixir mix can not install elixir packages

[callmiy]

I have elixir and erlang installed:

Erlang/OTP 27 [erts-15.0.1] [source] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit]

Elixir 1.17.2 (compiled with Erlang/OTP 25)

When I tried to install an elixir:

mix archive.install hex phx_new

I received the following error:

** (EXIT from #PID<0.95.0>) an exception was raised:
    ** (CaseClauseError) no case clause matching: :undefined
        (public_key 1.16.1) pubkey_os_cacerts.erl:40: :pubkey_os_cacerts.get/0
        (mix 1.17.2) lib/mix/utils.ex:664: Mix.Utils.read_httpc/1
        (mix 1.17.2) lib/mix/utils.ex:576: anonymous fn/2 in Mix.Utils.read_path/2
        (elixir 1.17.2) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2
        (elixir 1.17.2) lib/task/supervised.ex:36: Task.Supervised.reply/4

15:29:42.543 [error] Task #PID<0.111.0> started from #PID<0.95.0> terminating
** (CaseClauseError) no case clause matching: :undefined
    (public_key 1.16.1) pubkey_os_cacerts.erl:40: :pubkey_os_cacerts.get/0
    (mix 1.17.2) lib/mix/utils.ex:664: Mix.Utils.read_httpc/1
    (mix 1.17.2) lib/mix/utils.ex:576: anonymous fn/2 in Mix.Utils.read_path/2
    (elixir 1.17.2) lib/task/supervised.ex:101: Task.Supervised.invoke_mfa/2
    (elixir 1.17.2) lib/task/supervised.ex:36: Task.Supervised.reply/4
Function: #Function<5.19587555/0 in Mix.Utils.read_path/2>
    Args: []

[callmiy]

May be it is related to this line TERMUX_PKG_SRCURL=https://github.com/elixir-lang/elixir/releases/download/v${TERMUX_PKG_VERSION}/elixir-otp-25.zip which is hardcoded to otp-25 while the installed erlang is otp-27

[Biswa96]

...which is hardcoded to otp-25 while the installed erlang is otp-27

Thank you for reporting the issue. I have added a pull request with your suggestion. Would you like to test the packages from GitHub Actions artifacts of that pull request? Link https://github.com/termux/termux-packages/actions/runs/10496812629

[callmiy]

Thanks for the quick response. The PR fixed the erlang OTP version but does not fix the error I was getting with mix archive.install hex phx_new.

[Biswa96]

Could you explain what does those error mean in simple English? The error output is more cryptic than C++ compiler error.

[Biswa96]

The issue has not been fixed yet. Please feel free to create pull request to fix the issue.

[dragon0]

The issue is that the Erlang runtime is not loading the root CA certificates. This might be fixable with a compile-time option for the Erlang package, but I'm not sure. As a workaround, I added the following function call in an Elixir script after ensuring the ca-certificates package was installed: :pubkey_os_cacerts.load(["/data/data/com.termux/files/usr/etc/tls/cert.pem"]). This exception was not raised when I ran that script. I expected to need to include this call in any code that needed to make HTTPS connections, but interestingly the :pubkey_os_cacerts.get/0 function no longer raised an exception in subsequent runs, at least for mix-related commands. Maybe I just got lucky. But this suggests that it might be possible to just paste that function call in an iex shell and not need to run it again, IDK.

[dragon0]

@callmiy Your mix archive.install hex phx_new also worked for me after I ran the above :pubkey_os_cacerts.load(...):

$ mix archive.install hex phx_new
Resolving Hex dependencies...
Resolution completed in 0.029s
New:
  phx_new 1.7.14
* Getting phx_new (Hex package)
All dependencies are up to date
Compiling 11 files (.ex)
Generated phx_new app
Generated archive "phx_new-1.7.14.ez" with MIX_ENV=prod
Are you sure you want to install "phx_new-1.7.14.ez"? [Yn]
* creating /data/data/com.termux/files/home/.mix/archives/phx_new-1.7.14

[callmiy]

@dragon0 Thanks—your fix worked! I posted about the issue on the Erlang forum. Hopefully, someone can confirm your suspicion, and we can move forward.