LibreSSL overlay: Constant Python build failures

[guru meditation]

On 4 Gentoo machines the LibreSSL overlay of Python 3.10.13 is compliling file, on the 5th it is constantly failing to build _hashlib and _ssl with the execuse:

Python requires a OpenSSL 1.1.1 or newer

Does anybody know how to prevent this, or what causes this error?

Some speicifc entries from the error log:

Code: Select all

/var/tmp/portage/dev-lang/python-3.10.13/work/Python-3.10.13/Modules/_hashopenssl.c:1922:18: error: implicit declaration of function 'FIPS_mode' [-Werror=implicit-function-declaration]
 1922 |     int result = FIPS_mode();
      |                  ^~~~~~~~~
/var/tmp/portage/dev-lang/python-3.10.13/work/Python-3.10.13/Modules/_ssl/debughelpers.c:180:5: error: implicit declaration of function 'SSL_CTX_set_keylog_callback'; did you mean 'SSL_CTX_set_info_callback'? [-Werror=implicit-function-declaration]
  180 |     SSL_CTX_set_keylog_callback(self->ctx, NULL);
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~~~
      |     SSL_CTX_set_info_callback
/var/tmp/portage/dev-lang/python-3.10.13/work/Python-3.10.13/Modules/_ssl.c:1876:29: error: implicit declaration of function 'SSL_get0_verified_chain' [-Werror=implicit-function-declaration]
 1876 |     STACK_OF(X509) *chain = SSL_get0_verified_chain(self->ssl);
      |                             ^~~~~~~~~~~~~~~~~~~~~~~