Fails to compile on newer BEAM

[adamwight]

Steps to Reproduce

mix deps.get
mix ecto.migrate

System:
Erlang/OTP 27 [erts-15.2.3] [source-e02b4e39b5] [64-bit] [smp:8:8] [ds:8:8:10] [async-threads:1] [jit:ns]
Elixir 1.18.3 (compiled with Erlang/OTP 27)

Expected Result

Compile app and run the migrations.

Actual Result

==> ueberauth_example
===> Analyzing applications...
===> Compiling mimerl
===> Analyzing applications...
===> Compiling ranch
==> ssl_verify_fun
Compiling 7 files (.erl)
src/ssl_verify_fun_cert_helpers.erl:13:14: can't find include lib "public_key/include/public_key.hrl"
%   13| -include_lib("public_key/include/public_key.hrl").
%     |              ^

src/ssl_verify_fingerprint.erl:15:14: can't find include lib "public_key/include/public_key.hrl"
%   15| -include_lib("public_key/include/public_key.hrl").
%     |              ^

src/ssl_verify_fun_cert_helpers.erl:23:34: undefined macro 'id-ce-subjectAltName'
%   23|   AltSubject = select_extension(?'id-ce-subjectAltName', Extensions),
%     |                                  ^

src/ssl_verify_fingerprint.erl:27:26: record 'OTPCertificate' undefined
%   27| -spec verify_fun(Cert :: #'OTPCertificate'{},
%     |                          ^

src/ssl_verify_fun_cert_helpers.erl:9:2: function extract_dns_names/1 undefined
%    9| -export([extract_dns_names/1,
%     |  ^

src/ssl_verify_fingerprint.erl:29:39: record 'Extension' undefined
%   29|                           {extension, #'Extension'{}}, InitialUserState :: term()) ->
%     |                                       ^

src/ssl_verify_fun_cert_helpers.erl:19:2: spec for undefined function extract_dns_names/1
%   19| -spec extract_dns_names(Cert :: #'OTPCertificate'{}) -> [] | [string()].
%     |  ^

src/ssl_verify_fingerprint.erl:52:39: record 'OTPCertificate' undefined
%   52| -spec verify_cert_fingerprint(Cert :: #'OTPCertificate'{}, Fingerprint :: fingerprint()) ->
%     |                                       ^

src/ssl_verify_fun_cert_helpers.erl:19:33: record 'OTPCertificate' undefined
%   19| -spec extract_dns_names(Cert :: #'OTPCertificate'{}) -> [] | [string()].
%     |                                 ^

src/ssl_verify_fun_cert_helpers.erl:32:26: record 'OTPCertificate' undefined
%   32| -spec extract_cn(Cert :: #'OTPCertificate'{}) -> {error, no_common_name} | {ok, string()} | {error, invalid}.
%     |                          ^

src/ssl_verify_pk.erl:14:14: can't find include lib "public_key/include/public_key.hrl"
%   14| -include_lib("public_key/include/public_key.hrl").
%     |              ^

src/ssl_verify_fun_cert_helpers.erl:34:17: record 'OTPCertificate' undefined
%   34|   TBSCert = Cert#'OTPCertificate'.tbsCertificate,
%     |                 ^

src/ssl_verify_pk.erl:26:26: record 'OTPCertificate' undefined
%   26| -spec verify_fun(Cert :: #'OTPCertificate'{},
%     |                          ^

src/ssl_verify_fun_cert_helpers.erl:35:32: record 'OTPTBSCertificate' undefined
%   35|   {rdnSequence, List} = TBSCert#'OTPTBSCertificate'.subject,
%     |                                ^

src/ssl_verify_pk.erl:28:39: record 'Extension' undefined
%   28|                           {extension, #'Extension'{}}, InitialUserState :: term()) ->
%     |                                       ^

src/ssl_verify_fun_cert_helpers.erl:38:26: record 'OTPCertificate' undefined
%   38| -spec extract_pk(Cert :: #'OTPCertificate'{}) -> {error, no_common_name} | #'SubjectPublicKeyInfo'{}.
%     |                          ^

src/ssl_verify_pk.erl:51:30: record 'OTPCertificate' undefined
%   51| -spec verify_cert_pk(Cert :: #'OTPCertificate'{}, Pk :: pk()) ->
%     |                              ^

src/ssl_verify_fun_cert_helpers.erl:38:76: record 'SubjectPublicKeyInfo' undefined
%   38| -spec extract_pk(Cert :: #'OTPCertificate'{}) -> {error, no_common_name} | #'SubjectPublicKeyInfo'{}.
%     |                                                                            ^

src/ssl_verify_fun_cert_helpers.erl:40:17: record 'OTPCertificate' undefined
%   40|   TBSCert = Cert#'OTPCertificate'.tbsCertificate,
%     |                 ^

src/ssl_verify_fun_cert_helpers.erl:41:26: record 'OTPTBSCertificate' undefined
%   41|   PublicKeyInfo = TBSCert#'OTPTBSCertificate'.subjectPublicKeyInfo,
%     |                          ^

src/ssl_verify_fun_cert_helpers.erl:42:16: record 'OTPSubjectPublicKeyInfo' undefined
%   42|   PublicKeyInfo#'OTPSubjectPublicKeyInfo'.subjectPublicKey.
%     |                ^

src/ssl_verify_fun_cert_helpers.erl:48:24: record 'Extension' undefined
%   48| -spec extensions_list([#'Extension'{}] | asn1_NOVALUE) -> [] | [#'Extension'{}].
%     |                        ^

src/ssl_verify_fun_cert_helpers.erl:48:65: record 'Extension' undefined
%   48| -spec extensions_list([#'Extension'{}] | asn1_NOVALUE) -> [] | [#'Extension'{}].
%     |                                                                 ^

src/ssl_verify_fun_cert_helpers.erl:55:39: record 'Extension' undefined
%   55| -spec select_extension(Id :: term(), [#'Extension'{}]) -> undefined | #'Extension'{}.
%     |                                       ^

src/ssl_verify_fun_cert_helpers.erl:55:71: record 'Extension' undefined
%   55| -spec select_extension(Id :: term(), [#'Extension'{}]) -> undefined | #'Extension'{}.
%     |                                                                       ^

src/ssl_verify_fun_cert_helpers.erl:57:28: record 'Extension' undefined
%   57|   Matching = [Extension || #'Extension'{extnID = ExtId} = Extension <- Extensions, ExtId =:= Id],
%     |                            ^

src/ssl_verify_fun_cert_helpers.erl:57:84: variable 'ExtId' is unbound
%   57|   Matching = [Extension || #'Extension'{extnID = ExtId} = Extension <- Extensions, ExtId =:= Id],
%     |                                                                                    ^

src/ssl_verify_hostname.erl:16:14: can't find include lib "public_key/include/public_key.hrl"
%   16| -include_lib("public_key/include/public_key.hrl").
%     |              ^

src/ssl_verify_fun_cert_helpers.erl:75:15: record 'AttributeTypeAndValue' undefined
%   75| extract_cn2([[#'AttributeTypeAndValue'{type={2, 5, 4, 3},
%     |               ^

src/ssl_verify_hostname.erl:28:26: record 'OTPCertificate' undefined
%   28| -spec verify_fun(Cert :: #'OTPCertificate'{},
%     |                          ^

src/ssl_verify_fun_cert_helpers.erl:77:39: variable 'CN' is unbound
%   77|   ssl_verify_fun_encodings:get_string(CN);
%     |                                       ^

src/ssl_verify_hostname.erl:30:39: record 'Extension' undefined
%   30|                           {extension, #'Extension'{}}, InitialUserState :: term()) ->
%     |                                       ^

src/ssl_verify_hostname.erl:46:36: record 'OTPCertificate' undefined
%   46| -spec verify_cert_hostname(Cert :: #'OTPCertificate'{}, Hostname :: hostname()) ->
%     |                                    ^

src/ssl_verify_hostname.erl:76:38: record 'OTPCertificate' undefined
%   76|                              Cert :: #'OTPCertificate'{},
%     |                                      ^

src/ssl_verify_fun_cert_helpers.erl:49:1: Warning: function extensions_list/1 is unused
%   49| extensions_list(E) ->
%     | ^

src/ssl_verify_fun_cert_helpers.erl:56:1: Warning: function select_extension/2 is unused
%   56| select_extension(Id, Extensions) ->
%     | ^

src/ssl_verify_fun_cert_helpers.erl:64:1: Warning: function extract_dns_names_from_alt_names/2 is unused
%   64| extract_dns_names_from_alt_names([ExtValue | Rest], Acc) ->
%     | ^

could not compile dependency :ssl_verify_fun, "mix compile" failed. Errors may have been logged above. You can recompile this dependency with "mix deps.compile ssl_verify_fun --force", update it with "mix deps.update ssl_verify_fun" or clean it with "mix deps.clean ssl_verify_fun"

There are other smells, such as the suggestion of Elixir 1.11 in the README and the buildpack. Is this project still active, or is there an alternative approach now?